IBM HACMP Version Enhances High-Availability Processing for Mission-Critical Applications

Transcription

1 Software Announcement July 20, 1999 IBM HACMP Version Enhances High-Availability Processing for Mission-Critical Applications Overview RS/6000 customers can enhance the capabilities of multi-processing with the Multi-Processing for AIX, Version (HACMP 4.3.1). HACMP contains highly available application services for RS/6000 uniprocessors, SMPs, or nodes of an SP complex. HACMP detects system failures, sending fallover to a recovery processor with a minimal loss of end-user time. HACMP offers: Improved usability More flexible installation options Additional hardware and software support HACMP Enhancements The HAView utility to show resource group submaps Support for AIX Fast Connect configured as a highly available resource Target Mode SSA support for the Enhanced Scalability (ES) and ES/Concurrent Resource Manager (ESCRM) features The event emulation facility to create error-log entries for testing of user scripts The path of the HACMP log files no longer hard coded and can be specified via SMIT Hardware address takeover support for ATM adapters attached to the same switch The Dynamic Reconfiguration Resource Migration (cldare) utility accessed through a SMIT interface for enhanced ease of use Dynamic reconfiguration allows swapping of the IP address of an active service or boot adapter with the IP address of an active, available, standby adapter on the same node and network for adapters that can be hot swapped Automated error notification procedures for disk adapters added to the product Enhancements made to CSPOC for shared and concurrent volume groups Node-by-node migration to migrate from a running High Availability Subsystem (HAS) or CRM cluster to a running ES or ESCRM cluster respectively without bringing the cluster offline Key Prerequisites AIX Version Parallel System Support Program (PSSP) Version 3.1 for SP Systems RS/6000 servers with at least four slots (six are recommended) Multitailed disk support through IBM Multitailed Disks (SCSI, RAID, SSA) Network support (Ethernet, token ring, FDDI, ATM, Fibre Channel, SP Switch) Minimum of two LAN connections Planned Availability Date July 23, 1999 At a Glance HACMP offers improved usability, more flexible installation options, and additional hardware and software support for RS/6000 customers with mission-critical applications. New features include: Enhanced HAView to show resource subgroups Support for AIX Fast Connect Enhanced event emulation with error log entry capability HACMP log files paths no longer hard coded Support for hardware address takeover for ATM adapters SMIT front-end and enhancements for Dynamic Reconfiguration Resource Migration (cldare) Automated error notification procedures for disk adapters Enhancements to CSPOC for shared and concurrent volume groups Support of Target Mode SSA support for ES and ESCRM features Node-by-node migrations from HAS/CRM to ES/ESCRM Sample program for Online Planning sheets For ordering, contact: Your IBM representative, an IBM Business Partner, or IBM Americas Call Centers at 800-IBM-CALL Reference: RE010 This announcement is provided for your information only. For additional information, contact your IBM representative, call 800-IBM-4YOU, or visit the IBM home page at: IBM United States IBM is a registered trademark of International Business Machines Corporation

2 Description HACMP builds on IBM s position as a leader in high-availability clustering technology with new and improved functionality for usability, installability, system administration, and additional hardware support. Support Added for AIX Fast Connect: HACMP now supports the AIX Fast Connect application as a highly available resource. AIX Fast Connect enables non-aix clients, such as Windows 95, Windows 98, Windows NT, Windows for Work Groups, DOS, and OS/2, to request file and print services from an AIX server. Support for AIX Connections was previously announced in HACMP Version 4.3. The clverify utility is also enhanced to detect errors in the configuration of AIX Fast Connect with HACMP. Dynamic Reconfiguration Resource Migration: The Dynamic Reconfiguration Resource Migration utility is now accessible through SMIT panels as well as the original command line interface. This utility allows for rotating and cascading resources to be brought online, offline, or moved. The SMIT panels will make this function easier to use. Swap Adapter: HACMP is enhanced to allow the swapping of an IP address of an active service or boot adapter to the address of an available, active standby adapter that is on the same node and network. The original adapter then becomes an available standby adapter. This removes the restriction that a node must be powered down in order to remove and replace an adapter that is hot plugged. This functionality is available through SMIT panels. ATM Hardware Address Takeover: HACMP now supports hardware address takeover on ATM adapters attached to the same switch. This support is already available for token ring, Ethernet, and FDDI adapters, and alleviates the communications problems that could occur with Adapter swap and IP Address Takeover for ATM adapters. Hardware address takeover is supported for classical IP and ATM LAN emulation. Hardware Address Takeover is limited to adapters connected to the same switch unit. HAView Resource Support: The HAView function is enhanced to show resource group submaps. The submap displays a symbol for each node in the cluster that participates in the resource group as well as a symbol for each resource defined in the resource group. The Node submap is updated to display a symbol for each resource group that the node participates in. Redirect HACMP Log Files: HACMP log file paths no longer need to be hard-coded. The pathname of the HACMP log files is now specified through SMIT panels. The location of the following files can be specified: clresmgrd.log clstrmgr.debug cluster.mmdd cl_sm.log cm.log cspoc.log dms_loads.out emuhacmp.out hacmp.out Emulate Error Log Driven Events: The AIX Error Notification facility allows customers to define procedures to handle errors that may not be handled by HACMP The ability to emulate these error log driven events is added to aid script developers in testing their scripts without actually having to make the error occur. Errors can be inserted into the AIX error device file (/dev/error) through the use of SMIT panels. Automated AIX Error Notification Facility: The Automated AIX Error Notification facility is enhanced to detect automatically what configured resources can be associated with an AIX error log event. The default action is to log these events in the hacmp.out file. Customers can develop their own scripts and associate them with these events. Node-by-Node Migration to HACMP/ES: To assist customers who are planning on migrating from the HAS or CRM features to the ES or ESCRM features respectively, the node-by-node migration function provides the capability of migrating from HACMP HAS/CRM to HACMP ES/ESCRM without having to bring the cluster down. To migrate from a previous release of HACMP HAS or CRM feature to HACMP ES or ESCRM feature, the customer must first migrate to HACMP HAS or CRM. C-SPOC Enhancements: capability to: C-SPOC is enhanced with the Make a disk known to all nodes Create new shared or concurrent volume groups Create new file systems on a shared volume group Remove a disk definition Replace a disk in an existing volume group These capabilities are accessible through SMIT panels. Online Planning Sheets Sample Program: The online planning sheet sample program provides a convenient method for the customer to execute the planning process for HACMP At the end of the process, the program provides the capability of generating a shell script containing the configuration commands that match the online planning sheets configuration. Publications: A new section is added to the HACMP Planning Guide and the HACMP/ES Installation and Administration Guide that provides guidance to application developers who want their application to work well with HACMP Also, the HACMP/ES Installation and Administration Guide has been split into two volumes. Additional Hardware Support: HACMP now supports the following hardware: 7026-H H H RS/6000 SP Attachment Adapter (#8396) Advanced SerialRAID Adapter (#6225) Easy Upgrade and Migration: Node-by-node upgrades (version compatibility) are available from HACMP for AIX Version 4. Cluster configuration and hardware can be expanded or modified without service disruption through the Dynamic Reconfiguration option. Version compatibility and Dynamic Reconfiguration eliminate the most common causes of scheduled cluster downtime

3 Conversion Utilities: HACMP includes conversion utilities to help you upgrade from HACMP Version 4 without installing each intervening version. The following conversions are provided for the High Availability Subsystem, Concurrent Resource Manager, and High Availability for Network File System features: HACMP for AIX, Version 4.1 HACMP for AIX, Version HACMP for AIX, Version 4.2 HACMP for AIX, Version (not from Enhanced Scalability feature) HACMP for AIX, Version (not from Enhanced Scalability feature) HACMP for AIX, Version 4.3 (not from Enhanced Scalability feature) The following conversions are provided for the Enhanced Scalability feature: HACMP for AIX, Version 4.1 HACMP for AIX, Version HACMP for AIX, Version 4.2 HACMP for AIX, Version (all features) HACMP for AIX, Version (all features) HACMP for AIX, Version 4.3 (all features) Year 2000 This product does not have date dependencies and is therefore Year 2000 Ready. Euro Currency This program is not impacted by euro currency. Product Positioning HACMP is a software program that provides highly available application services for RS/6000 uniprocessors, SMPs or nodes of an SP complex. HACMP detects system failures and handles fallover to a recovery processor gracefully with a minimal loss of end-user time. One method of delivering high-availability services is the use of redundant disks. HACMP provides additional levels of availability with Redundant Array of Independent Disk (RAID) subsystems, disk mirroring, or the Recoverable Virtual Shared Disk on the SP because, in addition to disk failures, it protects against network, adapter, system, and user-defined failures. Another method of achieving higher availability, fault-tolerant solutions use redundant, specialized hardware to provide the protection against system and application failures. While fault-tolerant solutions do not require system restart, they often do require changes to applications for full, fault tolerance support. HACMP provides high availability without specialized hardware or changes to most applications. A fault-tolerant system s redundant hardware cannot be used to perform additional application work while checking the health of the system and application. This makes the system s price/performance relatively expensive compared to HACMP 4.3.1, which allows redundant hardware and software resources to be fully utilized. HACMP also helps protect against scheduled downtimes for maintenance and system upgrades. HACMP allows you to upgrade software and modify hardware without loss of cluster services. HACMP provides loosely coupled multiprocessing services that allow HACMP to scale workloads. Such configurations, whether concurrent access or partitioned data access, provide the ability to spread a workload across multiple RS/6000 processors, sharing the disk and CPU resource of the clustered processors. The Concurrent Resource Manager feature of HACMP provides an open API that applications can utilize to provide concurrent access to shared disk. HACMP should be considered for SP and RS/6000 customers when running AIX Version 4.3.2, or later. HACMP will continue to be supported for customers who have not yet migrated to AIX Version HACMP/ES 4.3 provides support for up to 32 nodes in the SP, RS/6000 Server, and mixed SP and RS/6000 environments. In addition, ES provides RS/6000 Cluster Technology Availability Services (RSCT). With its enhanced scalability and offering of RSCT, ES should be the lead product when proposing HACMP solutions. HACMP/ESCRM should be proposed in concurrent shared-access environments with AIX Version 4.3.2, or later. Availability of National Languages: This product is a single, worldwide product utilizing AIX Version 4 (V4) internationalization and localization to provide development and usage of global applications for worldwide markets. The product provides the level of National Languages Support (NLS) provided in the prerequisite AIX V4.3.2 operating system except for the following limitations: This product supports translated screens, panels, and messages, but the Program Integrated Information (PII) is available in U.S. English and Japanese with the limitation that HACMP/ES and HACMP/ESCRM are available in U.S. English only. Trademarks Reference Information RS/6000 and SP are trademarks of International Business Machines Corporation in the United States or other countries or both. AIX and OS/2 are registered trademarks of International Business Machines Corporation in the United States or other countries or both. Windows is a trademark of Microsoft Corporation. Windows NT is a registered trademark of Microsoft Corporation. Other company, product, and service names may be trademarks or service marks of others

4 IBM US Announcement Supplemental Information July 20, 1999 Intended Customers Customers who require higher levels of application availability than can be achieved through a stand-alone server Customers who must scale in performance greater than a single stand-alone server Education Support The appropriate curriculum will be updated, as necessary, to include the enhancements in this announcement. Details of the education support will be provided by July 23, 1999, through separate education announcements. Visit the following Web site for additional information: education.htm For catalogs, schedules, and enrollments, call IBM Education and Training at 800-IBM-TEACH ( ). Publications License Information and Proof of Entitlement documents will ship with the product. One copy of the following publications is automatically supplied with the basic machine-readable material. Additional copies of the publications can be ordered on July 23, To order, contact your IBM representative. Title Order Number Title Version 4.3.1: Programming Client Applications In addition, for HACMP/CRM and HACMP/ESCRM customers: Version 4.3.1: Programming Locking Applications In addition, for HANFS customers: Version 4.3.1: HANFS for AIX Installation and Administration Guide In addition, for HACMP/ES and HACMP/ESCRM customers: Version 4.3.1: Enhanced Scalability Installation and Administration Guide, Volume 1 Version 4.3.1: Enhanced Scalability Installation and Administration Guide, Volume 2 Order Number SC SC SC SC SC Multi-Processing for AIX, Version 4.3.1: Concepts and Facilities SC RS/6000 Cluster Technology: Event Management Programming Guide and Reference SA Version 4.3.1: Planning Guide SC RS/6000 Cluster Technology: Group Services Programming Guide and Reference SA Version 4.3.1: Installation Guide Version 4.3.1: Administration Guide Version 4.3.1: Troubleshooting Guide SC SC SC Technical Information Specified Operating Environment Hardware Requirements: HACMP works with RS/6000 uniprocessors, SMP servers, and SP systems in a no-single-point-of-failure server configuration. HACMP supports the RS/6000 models designed for server applications and meet the minimum requirements for internal memory, internal disk, and I/O slots. The This announcement is provided for your information only. For additional information, contact your IBM representative, call 800-IBM-4YOU, or visit the IBM home page at: IBM United States IBM is a registered trademark of International Business Machines Corporation

5 following RS/6000 models and their corresponding upgrades are supported in HACMP 4.3.1: PCI Desktop Systems, Models 140, 150, 240, and 260 PCI Deskside Systems, Models E20, E30, F30, F40, and F50 PCI Rack Systems, Models H10, S70, and S7A Entry Systems, Models 25S, 250, and 25T Compact Server Systems, Models C10 and C20 Desktop Systems, Models 370, 380, 390, 397, and 39H Deskside Systems, Models 570, 57F, 580, 58F, 58H, 590, 59H, 591, and 595 Rack Systems, Models 98B, 98E, 98F, 990, 99E, 99F, 99J, 99K, R10, R20, R21, R24, R50, R5U, S70, S7A, H50, and H70 Symmetric Multiprocessor Server Systems, Models G30, J30, R30, R3U, G40, J40, R40, R4U, J50, R4U, S70, and S7A SP Systems, Models 204, 205, 206, , 20A, 2A4, 2A5, 2A7, 2A8, 2A9, 2AA, 304, 305, 306, 307, 308, 309, 30A, 3A4, 3A5, 3A7, 3A8, 3A9, 3AA, 3B4, 3B5, 3B7, 3B8, 3B9, 3BA, 404, 405, 406, 407, 408, 409, 40A, 500, 50H, 550, and 55H, including the 604 High Nodes, 604E High Nodes, and the Power2 Super Chip (P2SC) nodes Any supported RS/6000 can be joined with any other supported RS/6000 in an HACMP configuration. The Models 250 and 25T can be used in the HACMP server configuration, but due to slot limitations, a single-point-of-failure is unavoidable in shared-disk or shared-network resources. HACMP executing in a concurrent access configuration requires one of the following devices: IBM 7131 SSA Multi-Storage Tower Model 405 (supports up to eight nodes; no CD-ROMs or tapes can be installed) IBM 7133 SSA Disk Subsystem Models 020, 600, D40 and T40 (supports up to eight nodes) IBM 7135 RAIDiant Array Models 110 and 210 (supports up to four nodes; dual controllers recommended) IBM 7137 Disk Array Subsystem Models 413, 414, 415, 513, 514, or 515 (supports up to four nodes) IBM 2105 Versatile Storage Server (VSS) Models B09 and 100 (supports up to four nodes) Certain non-ibm RAID systems can operate in concurrent I/O access environments. IBM will not accept Authorized Program Analysis Reports (APARs) if the non-ibm RAID offerings do not work properly with HACMP The minimum configuration and sizing of each machine is highly dependent on the user s database package and other applications. Actual configuration requirements are highly localized according to the required function and performance needs of individual sites. In configuring a cluster, particular attention must be paid to: Fixed-disk capacity and mirroring (Logical Volume Manager (LVM) and database) Slot limitations and their effect on creating a single-point-of-failure Client access to the cluster Other LAN devices (routers, bridges) and their effect on the cluster Replication of I/O adapters/subsystems Replication of power supplies Other network software Whenever a process takes over resources after a failure, consideration must be given to work partitioning. For example, if processor A is expected to take over for failed processor B and continue to perform its original duties, A must be configured with enough resources to perform the work of both. HACMP Device Support: At this time, the following adapters are supported in the HACMP environment. Refer to individual hardware announcements for the levels of AIX that are supported. Communications Adapters PCI/ISA 2920 IBM PCI Token-Ring Adapter 2931 ISA 8-Port Asynchronous Adapter 2932 ISA 8-Port Asynchronous Adapter 2933 ISA 128-Port Asynchronous Controller 2741 PCI FDDI-Fiber Single-Ring Upgrade 2742 PCI FDDI-Fiber Dual-Ring Upgrade 2743 PCI FDDI-Fiber Single-Ring Upgrade Port Asynchronous Controller, PCI bus Port Asynchronous EIA-232/RS-422, PCI bus Adapter 2963 TURBOWAYS 155 PCI UPT ATM Adapter 2968 PCI Ethernet 10/100 Adapter 2969 PCI Gigabit Ethernet Adapter 2979 PCI AutoLANStreamer Token-Ring Adapter 2985 PCI Ethernet BNC/RJ-45 Adapter 2986 PCI Ethernet 10/100 Adapter 2987 PCI Ethernet AUI/RJ-45 Adapter 2988 Turboways 155 PCI MMF ATM Adapter 8396 RS/6000 SP System Attachment Adapter ATM Hardware Address Takeover is limited to adapters connected to the same switch. MCA 1904 Fibre Channel Adapter 2402 Network Terminal Accelerator Adapter 2403 Network Terminal Accelerator Adapter 2723 FDDI-Fiber Dual-Ring Upgrade 2724 FDDI-Fiber Single-Ring Adapter 2725 FDDI-STP Single-Ring Adapter 2726 FDDI-STP Dual-Ring Upgrade Port Async Adapter EIA /100 Mbps Ethernet Adapter UNI 2972 AutoLANStreamer Token-Ring Adapter 2980 Ethernet High-Performance LAN Adapter 2989 Turboways 155 ATM Adapter 2992 Ethernet/FDX 10 Mbps TP/AUI MC Adapter 2993 Ethernet BNC MC Adapter /100 Mbps Ethernet Adapter SMP 4018 High-Performance Switch (HPS) Adapter Scalable POWERparallel Switch Adapter

6 Disk Adapters PCI 6206 PCI SCSI-2 Single-Ended Ultra-SCSI Adapter 6207 PCI SCSI-2 Differential Ultra-SCSI Adapter 6208 PCI SCSI-2 Single-Ended Fast/Wide Adapter 6209 PCI SCSI-2 Differential Fast/Wide Adapter 6215 PCI SSA Adapter 6225 Advanced SerialRAID Adapter MCA 2412 Enhanced SCSI-2 Differential Fast/Wide Adapter/A 2415 SCSI-2 Fast/Wide Adapter/A 2416 SCSI-2 Differential Fast/Wide Adapter/A 2420 SCSI-2 Differential High-Performance External I/O Controller 6212 High Performance Subsystem Adapter/A (40/80 Mbps) 6214 SSA 4-Port Adapter 6216 Enhanced SSA 4-Port Adapter 6219 MCA SSA Adapter For compatibility with subsystems not listed below, refer to the individual hardware announcements. External Storage Subsystems IBM 2105 Versatile Storage Server (VSS) Models B09 and 100 (supports up to four nodes) IBM 7131 SCSI Multi-Storage Tower Model 105 (supports up to four nodes; no CD-ROMs or tapes can be installed) IBM 7131 SSA Multi-Storage Tower Model 405 (supports up to eight nodes; no CD-ROMs or tapes can be installed) IBM 7133 SSA Disk Subsystem Models 020, 600, D40 and T40 (supports up to eight nodes) IBM 7135 RAIDiant Array Models 110 and 210 (supports up to four nodes; dual controllers recommended) IBM 7137 Disk Array Subsystem Models 413, 414, 415, 513, 514, and 515 (supports up to four nodes) IBM 7204 External Disk Drive Models 317, 325, 339, 402, 404, and 418 (supports up to four nodes) Router Support: The IBM RS/6000 SP Switch Router S can be used in cluster configurations where the router is used to provide communications to client systems. The router is not supported in the communications path between nodes in an HACMP cluster. Rack-Mounted Storage Subsystems IBM 7027 High Capacity Storage Drawer Model HSC (supports up to two nodes; no CD-ROMS or tapes installed) IBM 7027 High Capacity Storage Drawer Model HSD (supports up to four nodes; no CD-ROMS or tapes installed) The following table shows the SCSI-2 Single-Ended, SCSI-2 differential, and SSA cabling that HACMP supports. Maximum Number of Enclosures Type Adapter Enclosure per Bus SCSI Differential (16-bit) SCSI HSC 1 Single-Ended 6208 SCSI Differential (8-bit) SCSI Differential (16-bit) SCSI Differential (16-bit) SCSI HSD 1 Differential or (16-bit) SSA disks or disks 7133-D40 96 disks 7133-T40 96 disks SCSI-2 Differential Disk Cabling for HACMP: The cabling configurations in the following tables assume the processors are at the end of the bus (just before each terminator) and the storage devices are connected to the bus between two of the processors. The first table lists the available y-cables. Y-cables have three legs that are called base, long leg, and short leg. The first table shows what you can connect to each leg. The cables listed under the long leg and short leg columns can be found in the subsequent table under the cable name column except for the terminator, which is supplied with the y-cable

7 Y Cable Long Leg Feature Base to to Device Length Number Adapter Cable Short Leg (m) Notes Terminator, bit System to System Cable Terminator, bit System to System Cable HSD Terminator, bit or System to System Cable Terminator, bit System to System Cable Terminator, bit System to System Cable Cable From To Feature Cable/ Cable/ Length Number Device Device (m) Cable Name 2423 Y cable Y cable 2.5 System to System Cable (8 bit) 2424 Y cable Y cable 0.6 System to System Cable (16 bit) 2425 Y cable Y cable 2.5 System to System Cable (16 bit) 2845 Y cable bit Cable Y cable Y cable Y cable bit Cable Y cable Y cable Y cable Cable 2846 Y cable Cable 2885 Y cable Cable 2870 Y cable Cable 2869 Y cable Cable 2868 Y cable Cable Cable From To Feature Cable/ Cable/ Length Number Device Device (m) Cable Name 9158 Y cable Cable 9132 Y cable Cable 9161 Y cable Cable 9146 Y cable Cable 9145 Y cable Cable 9144 Y cable Cable HSC HSC Cable HSC HSC Cable HSC HSC Cable HSC HSC Cable 3137 Y cable 7027 HSD HSD Cable 3138 Y cable 7027 HSD HSD Cable 2901 Y cable Cable 2902 Y cable Cable 2905 Y cable Cable 2912 Y cable Cable 2914 Y cable Cable 2002 Y cable Cable (8 bit to bit) Y cable Cable (2426) (16 bit) System to System Cable SSA Disk Cabling for HACMP 4.3.1: HACMP supports all of the announced SSA cables and Fiber Optics Channel Extenders. Refer to the appropriate system manuals for cabling information. Software Requirements: HACMP requires AIX Version (5765-C34), or later. HACMP SP configurations require Parallel System Support Programs for AIX, Version 3.1 (5765-D51), or later. Each processor within a high-availability server complex requires the licensed program HACMP to be installed. Except during the upgrade process from earlier releases of HACMP Version 4, all processors in the HACMP server complex must be at the same AIX operating system level, including PTFs and maintenance upgrades. Some of the devices supported in HACMP may require a later release level of the AIX operating system; refer to the specific hardware announcement for the AIX release levels required by the hardware. The HAView facility requires the installation of TME 10 NetView for AIX (5697-NVW). Compatibility: HACMP (5765-D28) is not compatible with the previous releases of the licensed product: An upgrade from HACMP/6000 Version 1.2, 2.1, or 3.1 to HACMP involves reinstalling HACMP on all nodes in the cluster. This means that at some point, the cluster must be brought down; however, with proper planning the downtime can be reduced

8 An upgrade from HACMP 4.1, 4.2, 4.2.1, or also involves reinstalling HACMP on all nodes in the cluster; however, the Version Compatibility function allows you to upgrade the cluster one node at a time, without taking the entire cluster offline. The Version Compatibility function is intended to ease migration for HACMP 4.1, and 4.2 customers, and is not intended to provide long-term compatibility between versions of the product. While HACMP Enhanced Scalability feature does not interoperate with the other HACMP features, its configuration and customization interfaces are identical. Except for the stated limitations, the Enhanced Scalability feature is functionally compatible with the HAS feature. Limitations: HACMP is designed to support client users on a LAN using TCP/IP. HACMP monitors and performs IP address switching for the following TCP/IP-based communications adapters on cluster nodes: Token-ring FDDI Ethernet Fibre Channel (not supported on ES) SP Switch ATM ATM LAN Emulation HACMP does not by itself execute a high-availability function beyond the nodes in an HACMP cluster. Since HACMP 4.3 is highly configurable, it is the customer s responsibility to determine how and to what extent high availability is implemented. Limitations of the HAS and CRM Features: clusters of up to eight systems. Limitations of the HANFS for AIX Feature Supports Supports clusters of exactly two systems only. Cannot run the HANFS for AIX feature (#0884) and the other HACMP features (#0882, #0883, #0885, or #0886) in the same cluster they are mutually exclusive. Cannot install the HANFS for AIX feature (#0884) and the other HACMP features (#0882, #0883, #0885, or #0886) on the same system they are mutually exclusive. Cannot support: Concurrent access configurations Cluster Node Snapshots, Quick Configurations, Dynamic Reconfiguration, or Cluster Single Point of Control VSM Limitations of the ES and ESCRM Features ES supports clusters of up to 32 SP nodes or RS/6000 systems. ESCRM supports clusters of up to 8 SP nodes or RS/6000 systems. Target mode SSA is supported (but the forced down function is not supported). VSM is not supported with a cluster greater than eight nodes. Enhanced Scalability cannot execute in the same cluster as the HAS, CRM, or HANFS for AIX features. SOCC and slip networks are not supported. Environmental Conditions that Affect the Use of HACMP HACMP supports LAN-attached clients with TCP/IP protocol. HACMP s time to recover from a failure depends, in part, on the amount of time it takes for AIX to detect the failure. Some token-ring failures cannot be detected in fewer than 60 seconds. HACMP does not support attached terminals using Local Area Transport-B (LAT-B) protocols. Clients most appropriate to an HACMP environment are ASCII terminals attached via LAN-based Terminal Servers, Xstations, or TCP/IP-based client systems (such as an X-server TCP/IP interface on a PC, UNIX workstation, or a UNIX server). Cluster nodes must be within the cable-length limitations of the shared disks, so the physical distance between nodes is limited by the total cable length of the shared disk cables. Transparency of a failure and the subsequent recovery to external users or clients is dependent on the HACMP configuration, the client system, and application protocol design. The AIX JFS does not support concurrent access from multiple nodes; therefore, storage accessed in a concurrent configuration must be in raw logical volumes. Some HACMP command operands should not be used on systems also running NetView or other programs that catch SNMP traps. Refer to HACMP documentation for details on the use of clinfo daemon with such programs. HACMP does not support Ethernet. While the version compatibility function will allow HACMP to co-exist in a cluster with HACMP 4.1, 4.2, 4.2.1, or 4.2.2, this function is intended as a migration aid only. Once the migration is completed, each processor in the server cluster should be at the same AIX and HACMP release levels, including all PTFs. The version compatibility function in HACMP assumes the customer is using hardware and software components supported in AIX Version National Language Support is fully enabled in the HAS, CRM, and HANFS for AIX features; message translation is provided for Japanese. Performance Considerations: HACMP cluster performance can be measured and reported many ways. In a Mutual takeover/partitioned Workload Cluster environment, the user s applications and data are spread across two to eight machines in a cluster. Data management and application management can be placed under the control of a single node for efficiency or on each node for performance. In this partitioned environment, minimal interaction between nodes in a cluster derives high efficiency in each node. When a fallover occurs and the backup machine takes over for a failed node, performance is degraded for that period of time when the node is down. In data sharing, LAN and file system overhead and data contention can reduce CPU efficiency. Where data must be shared, the concurrent access configuration can be utilized, but less efficiently than a single system because distributed locks must be maintained between cluster processors

9 Planning Information Customer Responsibilities: Customers who purchase two or more HACMP licenses are free to replicate the contents of the following file sets throughout their enterprise: cluster.haview cluster.base.client.lib cluster.base.client.rte cluster.base.client.utils cluster.adt.client.demos cluster.adt.client.include cluster.adt.client.samples.clinfo cluster.adt.client.samples.clstat cluster.adt.client.samples.demos cluster.adt.client.samples.libcl cluster.msg.en_us.client cluster.man.en_us.client.data Packaging This program is shipped on CD-ROM. Media and publications are shipped under the 5692-AIX SPO. Entitlement documentation to support this licensed program is provided in hardcopy. Additional copies of the entitlement documentation can be ordered separately for a fee. Unlicensed documentation is included. Security, Auditability, and Control The announced program uses the security and auditability features of AIX Version 4.3 for Servers. The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities. Ordering Information New Licenses The ordering information for new licenses is unchanged by this announcement. Refer to Software Announcement , dated October 5, 1998, for complete details. Current Licensees Current licensees of 5765-D28 who have not paid a media process charge are encouraged to call IBM Direct at A 5692-AIX SPO order is mandatory for shipments of program distribution media and publications. Current licensees of 5765-D28 who have already paid a media process charge are encouraged to order MES updates by calling Before you call this number, IBM Software Delivery and Fulfillment (SDF) requires all AIX/6000 licensed programs installed on any RS/6000 hardware be installed for the customer s appropriate hardware and software serial numbers on AAS. If these conditions are met, SDF will enter an order for an MES to ship the release and will process the installation of the MES. The hours of operation are Monday through Friday, 7:00 a.m. to 4:00 p.m. mountain time. SDF will request the following information from the caller: Verification of customer name and number. Verification of ship-to address (for a permanent address change, the local IBM office must be contacted). Verification of media on which the update will be provided. If update is required on a different media than reflected in the profile and the customer is going to a higher density media than the original media type, SDF will make a permanent change. Examples of changes that SDF will make are going from 4-mm or 8-mm tape to CD. Number of software shipments to be generated. RS/6000 hardware and software systems serial numbers. Expected shipment/receipt date. Expedited software delivery requests. The local IBM office is responsible for: Permanent address change New chargeable software order requests Software discontinuance System program order (SPO) consolidations If SDF is unable to fulfill a request, SDF will refer the customer to an IBM representative. * PBOTC = Processor-Based One-Time Charge Delete and add the appropriate feature from the table below under the customer s 5692-AIX record to generate an MES order which will cause media and licensed program hardcopy entitled publications to be shipped on a given date. To ensure publications are shipped feature 3470 must not be on the 5692-AIX record. Program Feature Program Name Number Number High Availability 5765-D Cluster Multi-Processing for AIX, Version High Availability Subsystem High Availability 5765-D Cluster Multi-Processing for for AIX, Version Concurrent Resource Manager High Availability 5765-D Cluster Multi-Processing for AIX, Version High Availability Network File System High Availability 5765-D Cluster Multi-Processing for AIX, Version Enhanced Scalability

10 Program Feature Program Name Number Number High Availability 5765-D Cluster Multi-Processing for AIX, Version Enhanced Scalability Concurrent Resource Manager Program Upgrade Refer to Software Announcement , dated October 5, 1998, for complete details. AIX Upgrade Protection Plan: Existing HACMP customers who have subscribed to the Upgrade Protection Plan (5692-ADV) are eligible to receive the mod level updates in this announcement.: For existing HACMP customers to receive the new upgrade, it is necessary to place an MES order under 5692-ADV to delete and then add the same supply feature based on the HACMP component they purchased under their Upgrade Protection contract. For example, if you want to receive the update for: High Availability Subsystem: delete, then add, feature 0542 Resource Manager or Concurrent Access Upgrade: delete, then add feature 0543 HANFS: delete, then add feature 0544 Enhanced Scalability: delete, then add feature 0545 Customers who want to enroll in AIX Upgrade Protection Plan for the first time for HACMP products can do so by selecting the appropriate price feature numbers as announced in Software Announcement , dated December 15, The planned availability date for HACMP under Upgrade Protection is August 13, System Program Order (SPO) (5692-AIX): A 5692-AIX SPO is mandatory for shipments of program distribution and publications. The individual licensed program orders (for example, 5765-D28) are for registration and billing purposes only. No shipment occurs under these orders. To receive shipment of machine-readable materials stacked on CD-ROM requires an SPO (5692-AIX). Billing for the media type selected is generated under the SPO. To prevent additional billing expenses, place only one SPO order per machine. Select one of the following (5692-AIX) feature numbers for the licensed program hardcopy entitled publications, along with feature # 9001 for asset registration to be shipped on a given date. Program Feature Program Name Number Number 5765-D Version High Availability Subsystem 5765-D Version High Availability Network File System 5765-D Version Enhanced Scalability 5765-D Version Enhanced Scalability Concurrent Resource Manager Under SPO 5692-AIX, feature number 3470 can be used to suppress hardcopy documentation. To order entitled hardcopy documentation only, order feature number Terms and Conditions Licensing: IBM International Program License Agreement. Proofs of Entitlement (PoE) are required for all authorized use. Limited Warranty Applies: Yes Program Services: Available until December 31, Program service for HACMP V4.3.0 is also still available until December 31, Money-Back Guarantee: Two-month, money-back guarantee Copy and Use on Home/Portable Computer: No Support Line: Yes Other Support: AIX (when available) Volume Orders: Yes, contact your IBM representative Passport Advantage Applies: No Passport Advantage Subscription Applies: No Upgrades: Customers can acquire upgrades up to the currently authorized level of use of the qualifying programs. AIX/UNIX Upgrade Protection Applies: Yes Entitled Upgrade for Current AIX/UNIX Upgrade Protection Licensees: Yes AS/400 Software Subscription Applies: No Variable Charges Apply: Yes Educational Allowance Available: educational institution customers. Yes, to qualified 5765-D Version Concurrent Resource Manager

11 Charges Refer to Software Announcement , dated October 5, 1998, for complete details. Variable Charges: The applicable processor based one-time charge (PBOTC) will be based on the group of the designated machine on which the program is licensed for use. If the program is designated to a processor in a group for which no charge is listed above, the charge of the next higher group listed applies. For movement to a machine in a higher group, an upgrade charge equal to the difference in the then current charges between the two groups will apply. For movement to a machine in a lower group, there will be no adjustment or refund of charges paid. Year 2000 Readiness Disclosure Statements made in this announcement regarding Year 2000 are Year 2000 Readiness Disclosures under the Year 2000 Information and Readiness Disclosure Act of 1998, a U.S. statute enacted on October 19, Customer Financing: Global Financing offers attractive financing to credit-qualified commercial and government customers and Business Partners in more than 40 countries around the world. Global Financing is provided by the IBM Credit Corporation in the United States. Offerings, rates, terms and availability may vary by country. Contact your local Global Financing organization. Country organizations are listed on the Web at: Call Now to Order To order, contact the IBM Americas Call Centers, your local IBM representative, or your IBM Business Partner. IBM Americas Call Centers, our national direct marketing organization, can add your name to the mailing list for catalogs of IBM products. Phone: 800-IBM-CALL Fax: 800-2IBM-FAX Internet: ibm direct@vnet.ibm.com Mail: IBM Americas Call Centers Dept. RE010 P.O. Box 2690 Atlanta, GA Reference: RE010 To identify your local IBM Business Partner or IBM representative, call 800-IBM-4YOU. Note: Shipments will begin after the planned availability date. Trademarks RS/6000, SP, and HACMP/6000 are trademarks of International Business Machines Corporation in the United States or other countries or both. AIX, TURBOWAYS, POWERparallel, NetView, AIX/6000, and AS/400 are registered trademarks of International Business Machines Corporation in the United States or other countries or both. UNIX is a registered trademark in the United States and other countries exclusively through X/Open Company Limited. TME 10 is a trademark of Tivoli Systems, Inc. in the United States or other countries or both. Notes is a trademark of Lotus Development Corporation. Other company, product, and service names may be trademarks or service marks of others