You can enable Accelerated compression for parity groups on FMD DC2 or FMD HDE drives that are part of the following storage systems:
- VSP 5000 series
- VSP G1x00, F1500
- VSP G200, G/F400, G/F600, G/F800
- VSP G/F350, G/F370, G/F700, G/F900
This enables you to realize more virtual capacity than the actual usable capacity.
Ops Center Administrator only uses the physical capacity of the FMD DC2 or FMD HDE parity groups for which write is assured.
You enable Accelerated compression in the Parity Groups inventory window. The parity groups must be in IN_USE status.
If a pool includes parity groups with accelerated compression enabled, you can view the following in the detail window for the pool:
- Expansion Ratio: The ratio of the total capacity of FMD DC2 or FMD HDE pool volumes with respect to the total capacity of FMD DC2 or FMD HDE pool volumes assured for writing.
- Compression Ratio: The ratio of data size compression.
- Savings %: The percentage of capacity reduced by data compression with respect to the used capacity before the data compression. No value is shown until data is compressed.
If the savings percentage for a pool is not high enough, you can provision additional pool volumes to the pool from the parity groups using FMD DC2 or FMD HDE drives.