Deduplication system data volume requirements
When you enable deduplication on a pool, the deduplication system data volume (DSD volume) for the pool is created. The deduplication system data volume is used exclusively by the storage system to manage the data deduplication function. The deduplication system data volume for a pool is deleted automatically when you disable the Capacity Saving setting for the pool or delete the pool.
The following table lists the requirements for the deduplication system data volume.
|
Items |
Requirements |
|
Volume type |
DP-VOL (V-VOL) |
|
Emulation type |
OPEN-V |
|
Number per pool |
One deduplication system data volume per pool (fixed) |
|
Volume capacity |
40 TB (fixed) |
|
Path definition |
Not available |
|
LDEV format |
Available Warning: Format a deduplication system data volume only when you want to delete all deduplication-enabled DP-VOLs in the associated pool. After the deduplication system data volume has been formatted, all deduplication-enabled DP-VOLs assigned to the pool are not usable and must be formatted and deleted. When you format a deduplication system data volume, you must specify only one deduplication system data volume and no other volumes in the Format LDEVs window. |
|
Resource group |
A deduplication system data volume and its associated pool volumes must be in the same resource group. |
|
Cache management devices |
Each deduplication system data volume uses 14 cache management devices. |