When differential data is being copied, longer copying time can be expected for the following software products:
- ShadowImage
- Volume Migration
The following table shows the amount of additional copy time expected for the affected software products. The increase in copy time may be as much as doubled and depends on the number of pairs set to the software product.
|
Capacity of Migrated Volume (MB) |
Estimated delay in copying speed (in minutes) |
|---|---|
|
0 - 1,000 |
4 |
|
1,001 - 5,000 |
18 |
|
5,001 - 10,000 |
37 |
|
10,001 - 50,000 |
186 |
|
50,001 - 100,000 |
372 |
|
100,001 - 500,000 |
1,860 |
|
500,001 - 1,000,000 |
3,720 |
|
1,000,001 - 2,150,400 |
9,667 |
The above estimates are calculated based on the assumption that the workload for update I/Os for the migrated volume is 50 IOPS for one volume.