Creating a Pool

Pool is physical storage device on which you store data. One or more RAID groups form the Storage Pool. Pools are created on the drives such that each Pool is owned by one of the Nodes at any given point in time. These Pools can be taken over by any other Node when needed, since the underlying drives are visible to all the Nodes.

  1. Go to the Node page (ElastiCenter > Nodes).
  2. From the list of Nodes, select the one for which you create the storage Pool.
  3. In the actions pane go to the Tasks and then, click Add Pool.

add_pool_1

The Add Pool page appears:

Create Storage pool_1

  1. Select the Site, HA Group, and Node to which the Pool belongs.
  2. Specify a name for the Pool and then click Next.
  3. In the following screen, specify the RAID storage type and then choose one or more of the available disks.
  4. Note: The list of disks displayed shows Yes if disks are Write Cache Enabled.
  5. (Optional) Enable Sector Size.

Note: For optimal performance, ensure that all the disks in a Pool belong to the same disk array enclosure.

create_storage_pool_3

    1. Click Next. The QoS settings page appears.

create_pool_qos_settings

  1. Specify the details:

Field Description
Total IOPS The maximum per second I/O limit for the Pool.
Average Latency The desired average latency in milliseconds per I/O. Latency is the round-trip time per I/O request-response as measured by the client.

  1. Click Add Pool.

Note:The number of disks required to create a Pool depends on the RAID type and protection/performance you look for. For example, for a high performance application, you can create RAID 10 Pool. Similarly for a high capacity application, you can set up RAID z1 with 8 disks.

Configuring Spare

  1. Go to the Pools page (Navigation pane > Pools).
  2. In the Actions pane, click Manage RAID Configuration. The Disk Group page appears.
  3. In the Actions pane, select Add Spare.
  4. In the Add Spare page, select a disk from the drop-down list.
  5. Click Add.

Migrating a Pool

You cannot migrate a pool. Only a VSM can be migrated.