Accelerated compression-enabled parity groups
Data on LDEVs carved from parity groups comprised of drives that support accelerated compression is compressed before it is stored onto the drives. The default setting of accelerated compression is Disabled. You must enable this feature to take advantage of the data compression services on the drives.
NoteFor details about enabling both
accelerated compression and encryption on a parity group, see the
Encryption License Key User Guide.
When you enable accelerated compression on a parity group:
- The capacity of the parity group expands the usable physical capacity of the parity group. You can potentially carve out LDEVs from this expanded capacity and use them as pool volumes to create or expand a pool. When you do this, you can utilize the increased available capacity because the data on the accelerated compression-enabled drives has been compressed.
- LDEVs carved from accelerated compression-enabled parity groups can only be used as pool volumes to create or expand a pool. These LDEVs cannot be assigned directly to a host and must be assigned to a single pool as pool volumes. LDEVs from a single parity group cannot be shared among multiple pools.
- For the accelerated compression-enabled parity group, the total of the physical capacity is displayed as the parity group capacity.
