Creating a Disk Pool

Procedure

1. Choose Resources > Resources > Storage Pool.
2. Click the name of the desired storage pool. On the page that is displayed, click the Disk Pool tab.
3. Click Create.

   The Create Disk Pool page is displayed.

4. Set basic parameters for the disk pool. Table 1 describes related parameters.

   Table 1 Disk pool parameters

   Parameter	Description
   Disk Pool Name	Name of a disk pool. NOTE: The name must be unique. The name can contain only letters, digits, underscores (_), and hyphens (-). The name contains 1 to 64 characters.
   Max. Main Storage Media per Node	Maximum number of main storage disks that can be used on a single storage node to store user data. The value of this parameter determines the allocation of cache and compute resources on the node. Set this parameter based on site requirements. To ensure that cache resources can be allocated to newly-added main storage disks in the case of capacity expansion, you are advised to set this parameter based on the total number of main storage disks after capacity expansion. If the value is too small, newly-added main storage disks cannot be allocated with cache resources. Cache resources can be allocated to newly-added main storage disks only after both main storage disks and cache disks are added. If the value is too large, extra cache resources are reserved. As a result, cache resources cannot be fully utilized to improve read/write performance. If you select Default, the system automatically determines the value based on the number of selected main storage disks. Assume that the number of selected main storage disks is N: If N ≤ 12, a single node supports a maximum of 12 main storage disks. If 12 < N ≤ 24, a single node supports a maximum of 24 main storage disks. If N = 25, a single node supports a maximum of 25 main storage disks. If 25 < N ≤ 36, a single node supports a maximum of 36 main storage disks. If 36 < N ≤ 60, a single node supports a maximum of 60 main storage disks. If you select Custom, set the value based on site requirements. The value ranges from 4 to 60.

5. In the Choose Node and Disk area, select the nodes and disks that are used to create the disk pool.
   

   • You can click Add and select nodes and disks in the cluster to add them to the disk pool on the Choose Node and Disk page that is displayed.
   • You can select one or more added nodes or disks and click Remove to remove them.

6. Click OK.
7. Confirm your operation as prompted.
   

   After the disk pool is created, the system automatically creates VBSs for nodes in the disk pool. You can choose Monitor > Task Center to view the creation progress.