Creating a Disk Pool

Procedure

1. Choose Cluster > 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 disk pool parameters. Table 1 describes related parameters.

   Table 1 Disk pool parameters

   Parameter	Description
   Disk Pool Name	Indicates the name of the 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.
   Main Storage	Indicates the main storage type of the disk pool. Possible options are SAS, SATA, SSD, and SSD card or NVMe SSD.
   Cache	Indicates the cache type of the disk pool. Possible options are SSD card or NVMe SSD and SSD.
   Max. Main Storage Media per Node	Indicates the maximum number of storage disks that can be used by a single 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 the capacities of both main storage disks and cache disks are expanded. 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 24 < N ≤ 36, a single node supports a maximum of 36 main storage disks.
   Tier Grade	Indicates the tier grade of the disk pool. You can configure a tiering policy to store different files in different grades of disk pools. NOTE: If you select Default, when Main Storage is set to SSD or SSD card or NVMe SSD, the tier grade of the disk pool is Hot. When Main Storage is set to SAS, the tier grade of the disk pool is Warm. When Main Storage is set to SATA, the tier grade of the disk pool is Cold.

5. Select the nodes and disks for creating the disk pool and click OK.
6. Confirm your operation as prompted.
   

   When Status of a disk is To be added again due to disk re-insertion, you can select the faulty disk and click Re-add to Disk Pool to add the disk to the disk pool again.