Lenovo SAN Manager - Provisioning and Mapping Volumes

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Lenovo SAN Manager - Provisioning and Mapping Volumes Lenovo ThinkSystem DS2200, DS4200, DS6200 June 2017 David Vestal, WW Product Marketing Lenovo.com/systems

Table of Contents Introduction... 2 Provisioning with LSMC Interface... 3 Virtual Disk Groups... 4 Volumes in Virtual Disk Pools... 6 Mapping in the LSMC Interface... 7 Provisioning and Mapping with the CLI Interface... 8 Summary... 9 Introduction The Lenovo ThinkSystem DS2200, DS4200, and DS6200 SAN products are differentiated offerings with Lenovo s Storage portfolio, providing both hardware and software feature advantages. These SAN products are designed for simplicity, speed, and scalability and availability with the perfect blend of a high performing SAN product and a very easy-to-use interface. With simplicity at its core, the DS2200, DS4200, and DS6200 share the same software features and interface. The Lenovo SAN Manager, the operating software to manage the operational and features of the SAN products, is an easy-to-use GUI that makes complex administrative simple by automating configurations and operations. The Lenovo SAN Manager offers enterprise-class features like: Storage Tiering & Caching, Thin Provisioning, Rapid RAID Build, Snapshots, and more. In this paper, you will learn: Learn about new concepts and terms for provisioning storage pools from disks and creating volumes with Lenovo SAN Manager 2

Use the new Storage Management Console to define Disk Groups for a new Virtualized Pool. Learn how to create volumes and efficiently map them to hosts. This brief will discuss Lenovo SAN Manager s storage pooling and mapping features using Lenovo Storage Management Console, referred to as LSMC. Refer to Figure 1 for an example of the LSMC interface. Figure 1 LSMC Home Screen Provisioning with LSMC Interface With Lenovo SAN Manager, users will create storage pools by creating and adding Disk Groups. Disk Groups are similar to VDisks but can have different types Virtual and Read Cache. 3

Virtual a new methodology where volumes are managed in discrete 4MB entities (called pages ) which enable several key new features (see Volumes section below for more information) Read Cache allows the customer to increase the effective controller cache size by adding SSDs as a read-cache Disk Group This brief will focus on the Virtual Disk Groups and the new features and benefits that this enables. Virtual Disk Groups When creating a Virtual Disk Group, the user can specify the RAID level (RAID 1, 5, 6, 10) and which Pool the Disk Group belongs to. Disk Groups must contain like disk types: SSD, Enterprise SAS, MDL SAS. The user must select a valid group of available HDDs or SSDs for the chosen RAID type. The chunk size is automatically set to 512KB and does not need to be modified by the user. An example of the LSMC Add Disk Group Screen is shown below in Figure 2. 4

Figure 2- Add Disk Group Screen Once the virtual Disk Groups are created, the Lenovo SAN Manager will create pools comprised of the individually created Disk Groups. The array utilizes an active-active controller configuration, and will create a Pool A and Pool B each with the primary owner of Controller A and Controller B respectively. Best practices would leverage both controllers and balance the workload across the two pools. Figure 3 is an example of the LSMC Home screen with two pools comprised of Enterprise SAS (color coded light green) and MDL SAS (color coded light blue) disk components. 5

Figure 3- Home screen with Pools Provisioned Volumes in Virtual Disk Pools To further explain the virtual disk pool concept, we will first look at how volumes are treated in the virtual disk pool. One of the key concepts of the Lenovo SAN Manager is the addition of a virtualization layer that allows a volume s data to be segmented into discrete 4MB entities called pages. These 4MB pages are managed individually, and can allow a volume s data to be spread over potentially 6

multiple underlying storage pool Virtual Disk Groups and potentially multiple tiers (SSD, Enterprise SAS, MDL SAS) of disks. See figure 3. Figure 4- Virtual Volume Mapping in the LSMC Interface Once the users have added their Disk Groups to create the Pools, they may now create and map volumes, are now assigned to a pool instead of a VDisk. Lenovo SAN Manager includes the ability to assign volumes to groups. This grouping capability enables large numbers of initiators to be mapped to LUNs in a single operation improving the efficiency and organization of host configuration. In addition, the LSMC SMU incorporates search filters that greatly simplify the task of managing large numbers of volumes and reduce management time. 7

To map a volume, the user may select the Mapping topic, or click on the volume and select Mapping under the action tab. Users may now create initiator names, assign to Hosts, and then assign Host to Host Groups. This greatly simplifies the tasks of managing and mapping large numbers of Hosts that may have the same mapping requirements. Filter capabilities also exist for the Host and Host group tables. Lenovo SAN Manager allows for users to do default mapping by selecting All other initiators. Selecting this will make the volume available to all host ports. The user may also do explicit mapping - mapping to individual initiators, hosts, or host groups. The LSMC will map to both the A and B controller by default for each port. Figure 5 is an example of the Mapping Screen. Figure 5- Mapping Screen in Lenovo Storage Management Console Provisioning and Mapping with the CLI Interface First, specific to setting a management interface, Set protocols and set cliparameters will include support for setting the management-mode interface at 8

both a global (set protocols) or session level (set cli-parameters). This setting will dictate which CLI commands are used. Lenovo SAN Manager will provide a set of CLI commands to configure disk groups: add disk-group, remove disk-groups, show disk-groups, etc. Disk groups are a group of disks that together form a RAID set. With volumes now residing in pools, a new set of CLI commands is available to manage them; show pool, remove pool, etc. For additional information regarding CLI command changes, please refer to the CLI Reference Guide for a more detailed description. Summary Whether it s leveraging a small set of SSDs for tiering or read cache, to simplified management of large numbers of hosts the Lenovo SAN Manager will provide users powerful new capabilities. LENOVO PROVIDES THIS PUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This information could include technical inaccuracies or typographical errors. Changes may be made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. Any performance data contained herein was determined in a controlled environment; therefore, the results obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems, and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment. Any references in this publication to non-lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk. 9

Lenovo, the Lenovo logo, System x, ThinkServer, and ThinkSystem, are trademarks of Lenovo in the United States, other countries, or both. 10