Pool capacity consumed by metadata
When you use the capacity saving function, the following two kinds of capacities are consumed for the pool capacity:
- Used capacity of the pool consumed by user data
- Used capacity of the pool consumed by metadata
Metadata for the compression function. When the compression function is enabled, 2% of the total used capacity of the compression-enabled DP-VOLs is consumed as the metadata for the compression function. The capacity of the metadata for the compression function is added to the used capacity of the pool. To view the used capacity of the pool, see Pool Capacity (Used/Total) in the Pools window.
Metadata for the deduplication function. When the deduplication function is enabled, the capacity of the metadata of the deduplication function depends on the total used capacity of the deduplication-enabled DP-VOLs. The metadata of the deduplication function is stored in the deduplication system data volume. To view the capacity of the metadata for the deduplication function, see the capacity of the deduplication system data volume displayed on the Edit Deduplication System Data Volume window. The capacity of the metadata of the deduplication function is added to the used capacity of the pool. To view the used capacity of the pool, see Pool Capacity (Used/Total) in the Pools window.
The following table shows the relationship between the total used capacity of deduplication-enabled DP-VOLs and the capacity of the metadata of the deduplication function.
|
Total used capacity of DP-VOLs to be deduplicated |
Capacity of the metadata of the deduplication function |
|
Less than 32 GB |
Up to 4.0 GB |
|
64 GB |
4.1 GB |
|
100 GB |
4.2 GB |
|
256 GB |
4.9 GB |
|
512 GB |
5.9 GB |
|
1,024 GB |
7.9 GB |
|
2,048 GB |
11.9 GB |
|
4,096 GB or more |
19.9 GB or more |