The estimated time (in seconds) required for deleting volumes with data reduction enabled is as follows.
Time required for deleting volumes [sec] = (totalCapacity [MiB] of volumes / 1024) / speed of deleting volumes
-
Speed at which volumes are deleted: 0.28 [GiB/sec]
The time required for deleting volumes with data reduction enabled varies depending on the following factors.
-
Number of CPUs for storage nodes
-
The number of volumes deleted simultaneously
-
Capacity of volumes to be deleted
-
The amount of data written to volumes to be deleted
Conditions for measuring the speed at which volumes are deleted are shown in the following table.
-
Measurement results are on the assumption that no other processing is running. Note that this measurement does not guarantee the actual performance.
-
If another processing is being performed in the storage nodes (such as I/O processing), actual speed at which deletion is performed might be faster than the estimation.
-
Deleting volumes might take about 60 seconds longer than the estimated time because completion of the deletion is monitored at 60-second intervals.
| Item | Requirements |
|---|---|
| Number of CPUs | 16 |
| Memory | 234GiB |
| Number of volumes deleted simultaneously | 20 |
|
Ratio of the data capacity before and after data reduction* |
2:1 |
|
*Ratio of the data capacity before and after data reduction is shown as N:1. To convert the ratio to a percentage (%), calculate as follows: (1-1/N)×100 |
|