Deduplication on Hybrid Arrays
- CS500, CS700
- CS1000, CS3000, CS5000, CS7000
- HF20, HF20H, HF40, HF60
- Pinned volumes cannot be deduplicated.
- Deduplication cannot be enabled across striped pools.
- Replicated data is not deduplicated; the data is replicated without any deduplication savings.
- The array must include the number of SSD drives indicated in the following
table:
Array Model Required Number of SSDs HF20H 2 SSDs HF20H fully populated 4 SSDs HF20H fully populated and upgraded to HF40H 4 SSDs HF20, HF40, HF60 6 SSDs CS500, CS700 4 SSDs CS1000 3 SSDs CS3000, CS5000, CS7000 6 SSDs NOTE: See the Array Configuration Matrix available on HPE InfoSight at https://infosight.hpe.com/ for more information.
Arrays that are updated from release 5.0.2.0 and 5.0.1.0 might have volumes with deduplication enabled. Any arrays that are updated to release 5.0.3.0 or later with deduplicated volumes will operate as a deduplication capable array, regardless of the number of installed SSDs. Such configurations are not recommended by HPE.
The following tables provide information about the Maximum Deduplication Capacity (MDC) on supported hybrid arrays and the additional Flash to Disk Ratio (FDR) required to support MDC.
MDC and pool deduplication capacity outputs apply to hybrid arrays in the CS series only. On HF series and later models, the entire array capacity can be deduplicated.
You must have a four percent FDR to enable deduplication on the hybrid models. For MDC, you must have an additional four percent FDR for a total of eight percent FDR.
To see the deduplication capacity (TiB), log in to the array OS CLI as an administrator and run the pool --info pool_name command. On the HF20H, HF20, HF40, and HF60 models, this command returns N/A as the value for dedupe capacity (MiB). This is because you can enable deduplication for the entire array.
Platform | Maximum Deduplication Capacity (MDC) | Effective Capacity with 3x Deduplication | Additional Flash Required to Support MDC |
---|---|---|---|
CS500 | 40 TiB | 120 TiB | 1.6 TiB |
CS700 | 100 TiB | 300 TiB | 4 TiB |
CS1000 | 10 TiB | 30 TiB | 0.4 TiB |
CS3000 | 40 TiB | 120 TiB | 1.6 TiB |
CS5000 | 100 TiB | 300 TiB | 4 TiB |
CS7000 | 200 TiB | 600 TiB | 8 TiB |