Creating a Disk Domain

Context

• You are advised to use different disk domains to create storage pools for the block storage service and file storage service.
• For a storage system with 64 GB cache capacity per controller, four or eight SAS disks have been used to create disk domain disk_domain_0 for installing VMs.

• When configuring space for storing IP SAN service data or VM data, you need to create disk domains.
• To prevent data loss or performance deterioration caused by a member disk failure, a storage system uses hot spare space to take over data from the failed member disk. For details about how to plan hot spare policies for a disk domain, see "Planning Disk Domains".

Procedure

1. Log in to DeviceManager.
2. Choose Provisioning > Disk Domain.
3. Click Create.

   The Create Disk Domain dialog box is displayed.

4. Name and describe the disk domain.
   1. In Name, enter a name for the disk domain.
   2. In Description, enter the function and properties of the disk domain. The descriptive information helps identify the disk domain.

5. Select the disks that comprise the disk domain. There are three ways to select the disks:
   • Select All available disks.

     Configure the hot spare policy for each storage tier.

   • Select Specify disk type.
     1. Select the storage tier according to the disk type.
     2. Configure the number of disks for each storage tier.
     3. Configure the hot spare policy for each storage tier.
   • Select Manually select.
     1. Click Select.
     2. In the Select Disk dialog box, select the disks you need and click .
     3. Click OK to finish selecting disks.
     4. Configure the hot spare policy for each storage tier.

6. Click OK.

   A message is displayed, indicating that the operation succeeded.

7. Click OK.