If a pool's usage rate becomes high, you can continue using the pool by expanding the capacity of the pool.
Pools for thin provisioning are virtual areas in a storage system that are associated with multiple drives. Thin provisioning provides virtual volumes to a server and uses the actual capacity from a pool when a server makes a write request.
VSP One Block Administrator displays a recommended configuration, from among various configurations supported by the storage system. This configuration consists of the combination of drives that allow drive space to be used most effectively.
For details on how drives are assigned for DDP when expanding the capacity of a pool in VSP One Block Administrator, see the Provisioning Guide.
- Make sure that there is an available drive configured in the storage system.
- Identify the pool name.
To specify the configuration of the pool being expanded, also obtain the following information:
- Drive information (drive type, drive interface, and capacity)
- RAID level
Unify the RAID level within the pool to RAID6 or RAID5.
When you expand the capacity of a pool by using a drive with the same drive information (drive type, drive interface, and capacity) as the drives that make up the pool, you can only specify the same RAID level as the level already set within the pool. If you want to specify a different RAID level to expand the capacity of the pool, use the REST API of VSP One Block Administrator or the command console.
- Number of drives to use
- Make sure that the user performing the procedure has been assigned the Storage Administrator (Provisioning) role.