The following tables show the number of differential tables and pair tables.
Table and volume limits (VSP 5000 series)
|
Differential table limit |
Pair table limit |
System volume limit |
|---|---|---|
|
419,200 |
32,768 |
65,536 |
The maximum number of SI pairs you can create is half the number of system volumes in the table if the P-VOLs and S-VOLs are in a one-to-one relationship.
For example, if the maximum amount of system volumes you can create is 65,536, then you can only create 32,768 SI pairs. If there are more S-VOLs than P-VOLs, then the number of allowed SI pairs decreases.
For VSP E series, the maximum number of differential tables and pair tables in a storage system depends on the amount of installed shared memory. Ensure that you have sufficient shared memory to handle the number of pairs you plan to create.
The following tables show the number of differential tables and pair tables according to the amount of installed shared memory.
Table and volume limits (VSP E series)
| Shared memory | Differential table limit | Pair table limit |
|---|---|---|
| Base (no additional shared memory) | 419,200 |
VSP E590, VSP E790, VSP E990, VSP E1090: 32,768 |
| Extension 1 | 419,200 |
VSP E590, VSP E790, VSP E990, VSP E1090: 32,768 |
| Extension 2 | 419,200 |
VSP E790,VSP E990, VSP E1090: 32,768 VSP E590: N/A |
| Extension 3 | 419,200 |
VSP E990, VSP E1090: 32,768 VSP E590, VSP E790: N/A |
| Extension 4 | 419,200 |
VSP E1090: 32,768 VSP E590, VSP E790, VSP E990: N/A |