EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

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1 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System EMC Solutionsfor Oracle 10g / 11g EMC Global Solutions 42 South Street Hopkinton, MA

2 Copyright 2008 EMC Corporation. All rights reserved. Published November, 2008 EMC believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED AS IS. EMC CORPORATION MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Use, copying, and distribution of any EMC software described in this publication requires an applicable software license. For the most up-to-date listing of EMC product names, see EMC Corporation Trademarks on EMC.com. All other trademarks used herein are the property of their respective owners. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System P/N H EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

3 Contents About this Document... 9 Chapter 1 Solution Overview Business challenge Technology solution Overall solution advantages Solution component advantages Chapter 2 Solution Architecture Overall architecture Physically booted solutions System components common to all physically booted solutions System components unique to the pure NFS physically booted solution System components unique to the pure NFS physically booted RAC-to-RAC cloning solution System components unique to the blended FCP/NFS physically booted solution Virtualized solutions Virtualization architecture: Pure NFS and blended FCP/NFS solutions System components common to all virtualized solutions System components unique to the pure NFS virtualized solution System components unique to the blended FCP/NFS virtualized solution System components unique to the pure NFS VMware HA cluster virtualized solution Network architecture IP network architecture FCP network architecture Storage architecture Pure NFS solutions Blended FCP/NFS solutions Database server architecture Physically booted solutions Virtualized solutions using a single ESX server Pure NFS VMware HA cluster virtualized solution Application architecture Blended FCP/NFS solutions Pure NFS solutions Chapter 3 Hardware and Software Resources Hardware resources All solutions Physically booted solutions Software resources EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 3

4 Contents 4 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

5 Figures Figure 1 Pure NFS physically booted solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Figure 2 Pure NFS physically booted RAC-to-RAC cloning solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Figure 3 Blended FCP/NFS physically booted solution: Oracle RAC 10g and 11g Celerra NS Series Figure 4 Pure NFS virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Figure 5 Blended FCP/NFS virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Figure 6 Pure NFS VMware HA cluster virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Figure 7 EMC NS40 Data Mover ports and traffic types Figure 8 EMC CX3-40f ports Figure 9 Pure NFS configuration 1: 3 FC shelf RAID configuration Figure 10 Pure NFS configuration 2: 2 FC shelf RAID configuration Figure 11 Blended configuration 1: 3 FC shelf RAID 1-0/RAID Figure 12 Blended configuration 2: 3 FC shelf /RAID EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 5

6 Figures 6 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

7 Tables Table 1 Solution components Table 2 Oracle RAC 10g NFS solution RAID configurations Table 3 File system layout Table 4 Oracle RAC 10g/11g FCP solution RAID configurations Table 5 File system layout Table 6 Database server network interface configuration Table 7 VMware ESX server network interface configuration Table 8 ESX server network interface configuration Table 9 Application file or activity types and locations Table 10 Hardware specifications Table 11 Hardware specifications physically booted solutions Table 12 Software specifications EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 7

8 Tables 8 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

9 About this Document This document provides an overview of the architecture of the EMC solutions for the Celerra NS Series Multi- Protocol Storage System focusing on Oracle RAC 10g and 11g on Linux. This solution was developed by EMC Global Solutions in Research Triangle Park, North Carolina. Purpose Information in this document can be used as the basis for a solution build, white paper, best practices document, or training program. Information in this document can also be used by other EMC organizations (for example, the technical services or sales organization) as the basis for producing documentation for a technical services or sales kit. Audience This document is intended for internal EMC personnel, EMC partners, and customers. Scope This document describes the architecture of an EMC solution built and tested by EMC Global Solutions in Research Triangle Park, North Carolina. The EMC Global Solutions group creates validation test reports (VTRs) for the various solutions described in this white paper. The VTRs provide detailed information about the tests performed to validate this solution. They are available from the EMC Oracle Solutions for Midsize Enterprises launch page on Powerlink.emc.com. Implementation instructions and best practices are beyond the scope of this document. Note: The validation test reports are available only to EMC personnel and partners. Related documents The following documents provide additional, relevant information. Access to these documents is based on your login credentials. If you do not have access to the following content, contact your EMC representative: On EMC.com and EMC Powerlink: EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi- Protocol Storage System Best Practices Planning EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi- Protocol Storage System Applied Technology Guide Celerra and Oracle RAC 10g presentations and white papers On EMC.com: The Solutions for Oracle page EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 9

10 About this Document 10 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

11 Chapter 1 Solution Overview This chapter presents these topics: Business challenge Technology solution Overall solution advantages Solution component advantages EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 11

12 Solution Overview Business challenge Midsize enterprises face the same challenges as their larger counterparts when it comes to managing database environments. These challenges include: Rising costs Control over resource utilization and scaling Lack of sufficient IT resources to deploy, manage, and maintain complex environments at the departmental level The need to reduce power, cooling, and space requirements However, unlike large enterprises, midsize enterprises are constrained by smaller budgets and cannot afford a custom, one-off solution. This makes the process of creating a database solution for midsize enterprises even more challenging than for large enterprises. These challenges call for a flexible, scalable, cost-effective, and resilient storage solution. The storage solution should: Technology solution Be based on open systems software Use cost-effective industry-standard hardware Include all of the required elements for a complete database solution Be fully documented so that the solution can be built, tuned, and managed successfully and reliably Be as dense and power efficient as possible Be flexible and manageable The heart of the solutions in this document, the EMC Celerra NS Series Multi-Protocol storage array, is a remarkably versatile device. It provides: Network Attached Storage (NAS) through the Network File System (NFS) and Common Internet File System (CIFS) protocols iscsi storage through the Celerra s Data Movers Storage Area Network (SAN) storage over the Fibre Channel Protocol (FCP) through the back-end CLARiiON CX3-40f series storage array Truly a multi-protocol storage array, the Celerra NS Series includes a world-class NAS array combined with the functionality and performance of the leading midrange SAN array. Thus, both NAS and SAN functionality and performance are provided without compromise. The solutions described in this document include all the required components for a complete database application environment that address the challenges described in the Business challenge section. The solution components are described in Table EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

13 Solution Overview Table 1 Solution components Component Description Scale-Up OLTP Real-world performance and capacity testing. Utilizes an industry-standard OLTP database performance benchmark, while providing only real-world tunings on a reasonably priced and configured platform. All of the scalability is provided on a single database instance. This assumes a monolithic application where all users must have access to all of the data in the database. Scale-Out OLTP Real-world performance and capacity testing. Utilizes an industry-standard OLTP database performance benchmark, while providing only real-world tunings on a reasonably priced and configured platform. Scalability is provided by adding additional database instances that are not clustered and that access their own physical database. This assumes that the database application can be broken down into many small, independent databases, and that no single user needs to see the data of any other user outside of the database associated with that user. A typical example would be Software as a Service (SaaS). Basic Backup and Recovery Advanced Backup and Recovery (snapshot) Advanced Backup and Recovery (de-duplication) Uses only the functionality provided by the database server and the operating system software to perform backup and recovery. Uses the database server s CPU, memory, and I/O channels for all backup, restore, and recovery operations. Uses additional software components at the storage layer to free up the database server s CPU, memory, and I/O channels from the effects of operations relating to backup, restore, and recovery. Provides high-performance backup and restore operations, improved space efficiency, or other benefits in comparison to basic backup and recovery. Saves acquisition, power, space and cooling costs by increasing the density of storage of Oracle database backups by using a specialized hardware de-duplication array. Basic Protect Uses tools provided by the operating system and database server software (in the same sense as basic backup) to provide disaster recovery. Uses the database server s CPU, memory, and I/O channels for all operations relating to the disaster recovery configuration. Advanced Protect Uses additional software components at the storage layer to enable disaster recovery, thereby freeing up the database server s CPU, memory, and I/O channels from the effects of these operations. Enables the creation of a writeable copy of the production database on the disaster recovery target, allowing this database to be used for operations such as backup, test/dev, and data warehouse staging. Resiliency Every significant layer of the solution is tested by introducing faults in an effort to cause the solution to fail. In the process, the entire solution is shown to be resilient to faults at every layer, including database clustering, networking, and storage. Test/dev A running production OLTP database is cloned with minimal, if any, performance impact on the production server, as well as no downtime. The resulting dataset is provisioned on another server for use for testing and development. This is a critical capability for many midsize enterprise customers. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 13

14 Solution Overview Overall solution advantages Reduced total cost of ownership In any reasonable configuration, the database server s CPU is the most expensive component of the entire architecture. Therefore, the over-arching principle of EMC s Oracle RAC 10g and 11g Solutions for Midsize Enterprises is to free up the database server s CPU (as well as memory and I/O channels) from utility operations such as backup and recovery, disaster recovery staging, test/dev, and cloning. The best use of database server CPU is to parse and execute the SQL statements that are required by the application user. The solution also reduces total cost of ownership by using the following: Simplified management Robust performance and scaling Virtualization Industry-standard hardware Open-systems operating system software Midrange multiprotocol storage arrays Specialized de-duplication storage arrays Virtualization of the database server both for production and for utility servers, such as the test/dev target and the disaster recovery target These features of the solution reduce acquisition and maintenance costs. Because these components are standard, high-volume items they can be obtained at a reasonable cost, and have abundant exposure in the marketplace. The comprehensive testing program provided by EMC s Oracle RAC 10g and 11g Solutions for Midsize Enterprises eases the burden of implementation, storage provisioning, and management. This is because the majority of issues that the customer would encounter while implementing the solution have already been thoroughly tested and documented. The performance testing provided by EMC s Oracle RAC 10g and 11g Solutions for Midsize Enterprises is unique. It utilizes an industry-standard OLTP benchmark, but does so without exotic tunings that are not compliant with best practices. In addition, a real-world configuration that the customer is likely to deploy is used. This allows the customer to be reasonably assured that the configuration they choose to run the application will run the workload predictably and successfully. The use of the FCP protocol in the solution (through the CLARiiON CX3-40f back-end array) allows for highperformance, low-latency I/O for databases requiring high-performance storage. However, this is required only for those database files (datafiles, tempfiles, control files, and online redo log files) that need a high level of performance. All remaining database files (archived logs, flashback recovery area, backup target, and all cluster-related files) can be stored on NFS mounts, thus reducing management and administrative costs. For databases that do not have high-performance storage demands, the NFS-mounted file systems can be used for all database files. Both a blended (combined FCP and NFS) configuration and a pure (NFS only) configuration are documented in this solution. Virtualization provides significant advantages over physically booted Oracle in a variety of contexts: 1. The use of a utility server. 2. Test/dev target, Advanced and Basic Protect target and the like are more easily and conveniently managed as virtual machines than as physically booted Oracle database servers. The advantages of consolidation, flexible migration and so on, which are the mainstays of virtualization, apply to these servers very well. Due to the requirement for RAC qualification, presently there is no support for Oracle 10g and 11g RAC servers on virtualized devices. For this reason, the EMC Global Solutions group does not publish such a 14 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

15 Solution Overview Simplified RAC implementation High availability configuration as a supported and validated solution. However, the use of Oracle Database 10g and 11g (in single instance mode in other words) does not present any support issues. In addition, the use of VMotion to migrate an Oracle database instance from one piece of hardware to another was achieved with virtually no performance impact and no downtime on the running Oracle database instance. This provides a very high level of manageability and downtime reduction for tasks such as software and hardware upgrades. The use of a VMware High Availability (HA) cluster provides further high availability advantages to the virtualized solution. EMC has validated the use of a VMware HA cluster with Oracle Database 10g and 11g in a single-instance scale-out environment. The use of NFS greatly simplifies the creation of the shared file systems required by RAC, particularly for the clustering layer. The use of a clustered file system on the database server (such as OCFS2) is wasteful of valuable database server CPU resources. In addition, NFS is far simpler to configure and manage. In both the blended and pure solutions, NFS is used to store all files required by the Oracle Cluster Ready Services (CRS) layer. The use of resiliency testing in EMC s Oracle RAC 10g and 11g for Midsize Enterprises ensures that the database configuration is reliable. Clustering is used at every major layer of the solution, including the database server, the NAS file server, and the back-end SAN array. By testing the fault tolerance of all of these layers, the ability of the application to withstand hardware failures with no downtime is assured. Information lifecycle management (ILM) The solution implements tiered storage. High-performance storage is provided through the CLARiiON CX3-40f back end over FCP and is stored on FC disks. This is used for files requiring extremely high-performance, low-latency access, such as Oracle datafiles, control files, and online redo log files. Other files are stored over NFS on slower, less expensive SATA II disks. These include archived log files, flashback recovery area, and backup target. For databases requiring less performance, all database files can be stored on NFS mounted file systems. Solution component advantages Advanced Backup As stated above, the database server s CPU is the most valuable resource in a database configuration. The use of the database server s CPU, memory, and I/O channels to perform backup and recovery operations is therefore wasteful of a precious commodity. The Basic Backup solution is validated primarily to serve as a baseline for the Advanced Backup solution, which demonstrates the use of storage layer replication tools (snapshots for example) to perform Oracle database backup. The advantages of Advanced Backup are as follows: Reduced mean time to recovery Advanced Backup with snapshots dramatically improves the mean time to recovery (MTTR) by reducing the time required for the restore operation. Further, as the backup operation has minimal impact on the database server performance, the backup can be run more often. This means that the recovery operation is also optimized since fewer archived logs must be applied. Reduced storage, power, and space costs A specialized de-duplication array is also included in this solution, the first such solution published by EMC Corporation. This array provides very dense storage for Oracle RMAN backup files. This reduces the costs of storage, power, and space, in that the same amount of data can be stored on fewer disks. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 15

16 Solution Overview Advanced Protect Test/dev Similar to Advanced Backup, Advanced Protect frees up the database server s CPU, memory, and I/O channels from the impact of a disaster recovery configuration. Basic Protect using Oracle Data Guard is also validated as a baseline to compare to Advanced Protect. Two forms of Advanced Protect are provided: RecoverPoint through the CLARiiON CX3 array-based splitter driver and MirrorView /A through iscsi. The advantages of Advanced Protect using RecoverPoint through the CX splitter driver are as follows: Cost savings RecoverPoint provides data compression of between two and 15 times prior to shipping it over the wire (typical compression is approximately five times). Considering that 60 to 80 percent of the total real cost of disaster recovery is network bandwidth expenses, this dramatically reduces the cost of this solution. This cost saving can easily justify the entire cost of the RecoverPoint solution. Superior data integrity RecoverPoint logs every change, and maintains those changes as long as the Journal Volume is capable of tracking them (this depends on change rate and the size of the journal). Other forms of replication, such as storage mirroring, copy corrupt data or unintended deletions to the target side. Although these items are also replicated by RecoverPoint, the customer can easily restore the image to a point just prior to the event, or present a copy of the data just prior to the event and copy out the deleted data for the purpose of restoration. No disruption to replication of production data RecoverPoint allows the customer to rapidly provision a copy of the database to test disaster recovery or other tasks without any disruption to the ongoing replication of the production data. This allows for unlimited target-side use of the replicated data without affecting the business-critical RPO/RTO SLAs. The advantages of Advanced Protect using MirrorView/A through iscsi are: Simplified deployment The use of consistency technology allows the customer to deploy a disaster recovery solution with a more simplified Oracle Application Stack on the target side. Since Data Guard is not required, in many cases Oracle 10g or 11g Standard Edition can be used. IP network The use of IP as the network protocol reduces costs and complexity. No conversion of FCP to IP is required. As stated earlier, the ability to deploy a writeable copy of the production database is required by many customers. The process of provisioning this copy must create minimal, if any, performance impact on the production database server. Also, absolutely no downtime can be tolerated. The Test/dev solution documented here provides this. The use of both virtualized and physical database servers as test/dev servers has been fully qualified by EMC Global Solutions. In the case of the virtualized test/dev server, a single-instance Oracle Database 10g or 11g server was validated. In the case of the physical test/dev server, a four-node Oracle RAC 10g or 11g cluster was validated; this provides RAC-to-RAC cloning for test/dev purposes, which has been requested by many customers. Virtualization scalability, performance, and high availability As mentioned earlier, one of the main challenges faced by the customer is to reduce cost by utilizing infrastructure effectively. Virtualization enables reduction in the number of servers and related IT hardware in the data center. The other main feature is the ability to move a running VM production database from one physical sever to another physical server without any downtime. In addition, the use of a VMware HA cluster can automate failover in the event of a hardware or software failure. The virtualization solution documented here provides all these benefits. 16 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

17 Chapter 2 Solution Architecture This chapter presents these topics: Overall architecture Physically booted solutions Virtualized solutions Network architecture Storage architecture Database server architecture Application architecture EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 17

18 Overall architecture In terms of the database server, the solutions provided by the EMC Global Solutions group fall into two categories: Solutions where the production database servers are physically booted. Solutions where the production database servers are virtualized. The physically booted solutions also include virtualized servers for Test/dev, and Basic and Advanced Protect targets. For production, all virtualization is on the VMware ESX software platform. In the physically booted pure NFS solution (described below), virtualization of the Test/dev and disaster recovery (DR) target servers is also supported using Oracle VM. In terms of the storage protocol, the solutions also fall into two categories: Pure NFS: All database objects stored on an NFS mount. Blended FCP/NFS: Datafiles, tempfiles, control files and online redo log files stored over FCP and Automatic Storage Management (ASM), and all other database objects stored over NFS. Six solutions are described in this document: 1. Pure NFS physically booted solution 2. Pure NFS RAC-to-RAC cloning solution 3. Blended FCP/NFS physically booted solution 4. Pure NFS virtualized solution using a single VMware ESX non-clustered server 5. Pure NFS virtualized solution using a VMware four-node HA cluster 6. Blended FCP/NFS virtualized solution Physically booted solutions System components common to all physically booted solutions The characteristics of the pure NFS solution and the blended FCP/NFS solution are rather different. However, the following applies to both of the physically booted solutions: On the production side, a physically booted four-node Oracle RAC 10g or 11g cluster is used. On the target side, a single instance Oracle 10g or 11g server is used. This applies to both the Test/dev and Protect solutions. For the blended FCP/NFS solution, this server runs as a virtual machine on a VMware ESX server. For the pure NFS solution, both VMware ESX and Oracle VM are supported. The RAC interconnect and storage networks consist of trunked IP connections to balance and distribute network I/O. Jumbo frames are enabled on these networks. Oracle RAC 10g or 11g for x86-64 runs on Red Hat Enterprise Linux or Oracle Enterprise Linux. Oracle RAC 11g for x86-32 was also tested for some solutions. The voting disk and Oracle Cluster Registry (OCR) files are stored on a RAID-protected NFS file system that is in turn stored on Fibre Channel (FC) disks. Archived log files, the flashback recovery area, and the backup target are stored on a RAID-protected NFS file system. This NFS file system is stored on low-cost, high-capacity SATA II drives. TCP/IP and NFS version 3 provide network connectivity and file system semantics for NFS file systems on both solutions Client, RAC interconnect, and redundant TCP/IP storage networks consist of dedicated network switches and virtual local area networks (VLANs). 18 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

19 Two sites are used, one for production, the other for disaster recovery target. A WAN connects these two sites. At the production site, the Oracle RAC 10g and 11g servers are connected to the client, RAC interconnect, WAN, and production storage networks. At the target site, a single instance Oracle 10g or 11g server is used as the disaster recover target for all Basic Protect and Advanced Protect solutions; it is also the target for the Test/dev solution. This server is configured as a virtual machine running on either a VMware ESX server or an Oracle VM server (in the case of the pure NFS solution). It is connected to the client WAN and target storage networks through virtualized connections on the virtualization server. Client virtual machines run on the VMware ESX server. They are connected to the client network. At the production site, a Celerra is connected to the Oracle RAC 10g/11g servers through the production storage network. For solutions other than the pure NFS RAC-to-RAC cloning solution, on the target site a separate Celerra is connected to the VMware ESX or Oracle VM server through the production storage network. The Oracle Database 10g/11g single instance target server accesses this network through a virtualized connection. In the blended FCP/NFS solution, the LUNs are discovered using Raw Device Mapping (RDM) on the target VMs. In the case of the pure NFS RAC-to-RAC cloning solution, a four-node physically booted Oracle 10g or 11g RAC cluster is used as the test/dev target. In all other respects, this solution is identical to the test/dev solution component within the pure NFS physically booted solution. Both physically booted solutions include a specialized de-duplication array, the Quantum DXi5500. This array provides a backup target for the Advanced Backup solution. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 19

20 System components unique to the pure NFS physically booted solution Figure 1 describes the reference architecture for the pure NFS physically booted solution. Figure 1 Pure NFS physically booted solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Oracle database files and online redo log files reside on their own NFS file system. Online redo log files are mirrored across two different file systems using Oracle software multiplexing. Three NFS file systems are used, one for datafiles, and two for online redo logfiles. The controlfiles are mirrored across the online redo log file NFS file systems. RAID-protected NFS file systems are designed to satisfy the I/O demands of individual database objects. For example, is sometimes used for the datafiles, but RAID 1 is always used for the log files (two separate configurations are supported; refer to RAID type and RAID group configuration ). The NFS file systems used to store Oracle datafiles, online redo logfiles, and controlfiles are stored on FC disks. Oracle Recovery Manager (RMAN) and Oracle Data Guard are used for the Basic Protect solution. RMAN is used as the Basic Backup solution. EMC Celerra SnapSure checkpoints are used as the Advanced Backup solution. 20 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

21 EMC Oracle Solutions for Midsize Enterprises provides a Test/dev component for the pure NFS solution, using the new SnapSure writeable checkpoint capability. System components unique to the pure NFS physically booted RAC-to-RAC cloning solution Figure 2 describes the reference architecture for the pure NFS physically booted RAC-to-RAC cloning solution. Figure 2 Pure NFS physically booted RAC-to-RAC cloning solution: Oracle RAC 10g and 11g on Linux Celerra NS Series The test/dev target in this solution is a four-node physically booted Oracle RAC 10g or 11g cluster. In all other respects, this solution is identical to the test/dev solution component described in System components unique to the pure NFS physically booted solution. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 21

22 System components unique to the blended FCP/NFS physically booted solution Figure 3 describes the reference architecture for the blended FCP/NFS physically booted solution. Figure 3 Blended FCP/NFS physically booted solution: Oracle RAC 10g and 11g Celerra NS Series High-performance database objects are accessed over an FCP network using redundant networks switches. Oracle ASM is used as the file system/volume manager. ASMLib is also used to virtualize the Logical Unit Numbers (LUNs) on the database server. Oracle database files and online redo log files are stored on separate LUNs that are mounted on the database server using ASM over FCP. Online redo log files are mirrored across two different ASM disk groups using Oracle software multiplexing. Three ASM disk groups are used, one for datafiles, and two for online redo log files. The control files are mirrored across the online redo log ASM disk groups. 22 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

23 Each ASM disk group and its underlying LUNs are designed to satisfy the I/O demands of individual database objects. For example, is used for the datafiles, but RAID 1 is used for the log files. All of these disk groups are stored on FC disks. RMAN and Oracle Data Guard are used for the Basic Protect solution. Two forms of Advanced Protect are provided: RecoverPoint through the CX splitter driver and MirrorView/A through iscsi. RMAN is used as the Basic Backup solution. EMC CLARiiON SnapView TM snapshots are used as the Advanced Backup solution. A Test/dev solution is provided that uses EMC CLARiiON SnapView clones. FCP storage networks consisting of dedicated, redundant FCP switches are present at both sites. At the production site, the Oracle RAC 10g/11g servers are connected to the production FCP storage network. The production Celerra (actually the CLARiiON CX3-40f back-end array) is also connected to this network. At the target site, the VMware ESX server is connected to the target FCP storage network. The Oracle Database 10g/11g single-instance target server accesses this network through a virtualized connection. The target Celerra (actually the CLARiiON CX3-40f back-end array) is also connected to this network. The production and target NS Series Multi-Protocol arrays are both connected to the WAN. A RecoverPoint cluster is present at each site. The RecoverPoint cluster at the production site is connected to the production FCP storage network. The RecoverPoint cluster at the target site is connected to the target FCP storage network. Both clusters are connected to the WAN. Virtualized solutions Virtualization architecture: Pure NFS and blended FCP/NFS solutions Setting up a virtualization configuration involves: 1. Deploying an ESX server or a VMware ESX HA cluster 2. Creating VMs 3. Allocating memory and CPU resources 4. Configuring VMs 5. Discovering LUNs on the VMs (NFS mounts for the pure NFS solution and RDM for FCP) 6. Configuring VMotion for high availability System components common to all virtualized solutions In terms of the virtualized solutions, the characteristics of the pure NFS solution and the blended FCP/NFS solution are rather different. However, the following applies to both of the virtualized solutions: Client and TCP/IP storage networks consist of dedicated network switches and VLANs. The TCP/IP storage network consists of virtualized IP connections. Jumbo frames are enabled on this network. TCP/IP and NFS version 3 provide network connectivity and file system semantics for NFS file systems on both virtualized solutions. With the exception of the pure NFS VMware HA cluster solution, one ESX production server is used for all database instances. A second ESX server is used as a VMotion target. For the purpose of high availability, VMotion is used to migrate a VM running the production database from one ESX server to another without any downtime. Both of the ESX servers are connected to both TCP/IP networks. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 23

24 In the case of the pure NFS VMware HA cluster solution, a four-node cluster was used with two VMs on each cluster. The configuration of the VMs was identical to the other virtualized solutions. A Celerra is connected to the VMware ESX servers through the storage network. With the exception of the pure NFS VMware HA cluster solution, four client VMs are created on a single ESX server. In the case of the pure NFS VMware HA cluster solution, two VMs are created on each ESX server that is a node in the cluster. Each VM is allocated 7 GB of memory and two CPUs. The client VMs are connected to the client network. Oracle Database 10g or 11g for x86-64 runs on Red Hat Enterprise Linux or Oracle Enterprise Linux on all VMs. Archived log files, the flashback recovery area, and the backup target are also stored on a RAID-protected NFS file system. This NFS file system is stored on low-cost, high-capacity SATA II drives. System components unique to the pure NFS virtualized solution Figure 4 describes the reference architecture for the pure NFS virtualized solution. Figure 4 Pure NFS virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series Oracle database files and online redo log files reside on their own NFS file system. Online redo log files are mirrored across two different file systems using Oracle software multiplexing. Three NFS file systems are used, one for datafiles, and two for online redo log files. The control files are mirrored across the online redo log file NFS file systems. 24 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

25 RAID-protected NFS file systems are designed to satisfy the I/O demands of individual database objects. For example, is sometimes used for the datafiles, but RAID 1 is always used for the log files (two separate configurations are supported; refer to RAID type and RAID group configuration ). The NFS file systems used to store Oracle datafiles, online redo log files, and control files are stored on FC disks. System components unique to the blended FCP/NFS virtualized solution Figure 5 describes the reference architecture for the blended FCP/NFS virtualized solution. Figure 5 Blended FCP/NFS virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series High-performance database objects are accessed over an FCP network using redundant network switches. Oracle ASM is used as the file system and volume manager. ASMLib is also used to virtualize the LUNs on the database server. Oracle database files and online redo log files are stored on separate LUNs that are mounted on the database server using ASM over FCP. Online redo log files are mirrored across two different ASM disk groups using Oracle software multiplexing. Three ASM disk groups are used, one for datafiles, and two for online redo log files. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 25

26 The control files are mirrored across the online redo log ASM disk groups. Each ASM disk group and its underlying LUNs are designed to satisfy the I/O demands of individual database objects. For example, is used for the datafiles, but RAID 1 is used for the log files. All of these disk groups are stored on FC disks. FCP storage networks consist of dedicated, redundant FCP switches. Four separate sets of LUNs (for data and redo logs) are created on the back-end storage and each corresponding set is presented to the VM using RDM. System components unique to the pure NFS VMware HA cluster virtualized solution Figure 6 describes the reference architecture for the pure NFS VMware HA cluster solution. Figure 6 Pure NFS VMware HA cluster virtualized solution: Oracle RAC 10g and 11g on Linux Celerra NS Series A four-node VMware HA cluster is used. An isolated network consisting of three trunked Gigabit Ethernet (GbE) connections is used as the HA cluster interconnect. Two VMs are used for each ESX server. In all other respects, the network and storage configurations are identical to those shown in System components unique to the pure NFS virtualized solution. 26 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

27 Network architecture IP network architecture VLAN This section describes the network architecture of the validated solutions. VLANs logically group devices that are on different network segments, or sub-networks. The validated solution uses three VLANs to segregate network traffic of different types. This improves throughput, manageability, application separation, high availability, and security. Redundant switches A client VLAN supports connectivity between the physically booted Oracle RAC 10g/11g servers, virtualized Oracle Database 10g/11g, and the client workstations. The client VLAN also supports connectivity between the Celerra and the client workstations to provide network file services to the clients. Control and management of these devices are also provided through the client network. In the case of the physically booted solutions, a RAC interconnect VLAN network supports connectivity between the Oracle RAC 10g servers for network I/O required by Oracle CRS. Three network interface cards (NICs) are configured on each Oracle RAC 10g server to the RAC interconnect network. Link aggregation is configured on the servers to provide load balancing and port failover between the two ports for this network. The pure NFS VMware HA cluster virtualized solution uses an HA cluster interconnect network on an isolated VLAN consisting of three trunked NICs for each ESX server. The storage VLAN uses the NFS protocol to provide connectivity between servers and storage. In the case of the physically booted solutions, each database server connected to the storage VLAN has two NICs dedicated to the storage VLAN. Link aggregation is configured on the servers to provide load balancing and port failover between the two ports. In the case of the pure NFS virtualized solution and the blended virtualized solution, one NIC on the ESX server is assigned to each virtual machine. In the case of the VMware HA cluster virtualized solution two NICs are used for each VM for the storage network. In addition to VLANs, for the physically booted solutions, separate redundant storage switches are used, as shown in Figure 5. In addition, the RAC interconnect connections are also on a dedicated switch. For real-world solution builds, it is recommended that these switches support Gigabit Ethernet (GbE) connections, jumbo frames, and port channeling. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 27

28 EMC NS40 Data Mover ports Figure 7 illustrates the network ports on the rear of two EMC NS40 Data Movers. cge0 cge1 cge2 cge3 Primary (Active) Data Mover cge0 cge1 cge2 cge3 Secondary (Passive) Data Mover Figure 7 EMC NS40 Data Mover ports and traffic types FCP network architecture Ports cge0 (the last character is a zero) and cge1 are aggregated and connected to the storage network. They handle all I/O required by the database servers to the datafiles, online redo log files, archived log files, control files, OCR file, and voting disk. Ports cge2 and cge3 are left open for future growth. Note: Celerra Manager can be used to create Ethernet channels, link aggregations, and fail-safe networks. The following are the characteristics of the FCP network used in testing the blended FCP/NFS solution: Fully redundant FCP switches Two target ports on each of the CLARiiON CX3-40f storage processors are utilized. Each target port is connected to a separate FCP switch. For both physically booted and virtualized solutions, two redundant dual-port host bus adapters (HBAs) are used on each Oracle RAC or Oracle Database 10g/11g server. Each HBA is connected to a separate FCP switch. In the case of the virtualized solutions, the HBA ports on the ESX server are zoned to all the LUNs on the backend storage, but only the required LUNs are presented to each VM using RDM. Zoning is employed on the FCP switches to ensure that all Oracle hosts have redundant paths to access all LUNs on the CLARiiON CX3-40f array. EMC PowerPath software is employed on the Oracle hosts to ensure path failover, in the event of failure of an HBA, switch, switch port, storage processor (SP) or SP port. In the case of the physically booted solutions, resiliency testing is done to ensure seamless, consistent failover of all elements of the FCP network, including the RAC servers, FCP switches, and the CLARiiON CX3-40f array itself. All elements of this solution are found to be robust and reliable, and are able to survive the failure of any other element in the solution. Future testing will be done to validate resiliency on the virtualized solutions. 28 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

29 EMC CX3-40f storage processor ports Figure 8 illustrates the network ports on the rear of an EMC CX3-40f storage processor. Figure 8 EMC CX3-40f ports Storage architecture Pure NFS solutions High availability and failover The Celerra Data Movers are always connected to ports 2 and 3 at the front end and Fibre Channel ports on the back end of the EMC CLARiiON CX3-40f. The remaining ports are available to the database servers for FCP connectivity through the redundant FCP storage network switches. Setting up NAS storage involves: 1. Establishing the RAID levels 2. Allocating hot spares 3. Creating disk volumes 4. Combining disk volumes (stripes and slices) into metavolumes, or disk pools, that can span disks 5. Creating file systems that can be exported to servers The EMC Oracle Solutions for Midsize Enterprises have built-in high-availability (HA) features. These HA features allow the Celerra to survive various failures without a loss of access to the Oracle database. These features protect against the following: Data Mover failure Network port failure Power loss affecting a single circuit connected to the storage array Storage processor failure Disk failure RAID type and RAID group configuration Two sets of RAID and disk configurations have been tested, as shown in Table 2: Table 2 Oracle RAC 10g NFS solution RAID configurations Figure Configuration Description Figure 9 Pure NFS 3 FC shelf /RAID 1 AVM using configuration 1 user-defined storage pools Figure 10 Pure NFS configuration 2 2 FC shelf /RAID 1 AVM using user-defined storage pools EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 29

30 Hot Spare Shelf 3_ RG 11 RG Shelf 2_ RG 8 RG 9 RG Shelf 1_ RG 5 RG 6 RG RAID RAID RAID RAID 1 Hot Spares Shelf 0_ RG 0 System Disks RG 1 RG 2 RG 3 RG 4 Data Disk Hot Spare FC Disk SATA II Disk Figure 9 Pure NFS configuration 1: 3 FC shelf RAID configuration 30 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

31 Hot Spare Shelf 3_ RG 11 RG Shelf 1_ RG 6 RG 7 RG RAID RAID Hot Spare Shelf 0_ RG 0 System Disks RG 1 RG 2 RG 5 Data Disk Hot Spare FC Disk SATA II Disk Figure 10 Pure NFS configuration 2: 2 FC shelf RAID configuration Disk volume setup Automatic Volume Management Once the RAID groups are created, the Celerra automatically creates disk volumes that are accessible to the Data Movers. Automatic Volume Management (AVM) is a way for the user to configure Celerra volumes from RAID groups. User-defined pools allow the user to control exactly which RAID groups are used for a given volume. With AVM having user-defined pools, the pool can be automatically expanded if additional RAID groups are added later. Thus, this configuration option provides the greatest flexibility and control for configuring Celerra volumes. AVM with user-defined pools was used to configure all volumes in the solution. Table 3 in the next section contains a description of all the user-defined pools used. EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System 31

32 File systems, exports, and mount points In the next step, the database file systems are created, which are exported to the servers. In the case of the testing covered here the file systems shown in Table 3 were created, exported, and mounted on the database servers. Table 3 File system layout File system/ export AVM user-defined pool Volumes /crs 1 log1pool (user-defined storage /crsfs pool created using log1stripe volume) /vm 2 Default pool /VMwareBoot /datafs /log1fs /log2fs /archfs /flashfs /snapdatafs /snaplog1fs /snaplog2fs datapool (user-defined storage pool created using datastripe volume) log1pool (user-defined storage pool created using log1stripe volume) log2pool (user-defined storage pool created using log2stripe volume) archpool (user-defined storage pool created using archstripe volume) flashpool (user-defined storage pool created using flashstripe volume) datapool (user-defined storage pool created using datastripe volume) log1pool (user-defined storage pool created using log1stripe volume) log2pool (user-defined storage pool created using log2stripe volume) datastripe (metavol consisting of all available FC 4+1 groups) log1stripe (metavol using half of the RAID 1 groups) log2stripe (metavol using half of the RAID 1 groups) archstripe (metavol using the SATA 6+1 group) flashstripe (metavol using the SATA 6+1 group) snapdatafs (SnapSure writeable checkpoint of the datafs volume) snaplog1fs (SnapSure writeable checkpoint of the log1fs volume) snaplog2fs (SnapSure writeable checkpoint of the log2fs volume) For pure NFS virtualized solutions, the file systems for hosting the databases are located on a single Celerra. The file systems are created as shown in the above table. Then separate directories are created under each file system, which map to each separate database that is managed by the VMs. Only the relevant file systems were mounted on the VMs so that the VMs will not have access to other databases. 1 Used in physically booted solutions only. 2 Used in virtualized solutions only. Mounted on the ESX server. 32 EMC Solutions for Oracle Database 10g/11g for Midsize Enterprises EMC Celerra NS Series Multi-Protocol Storage System

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