You can configure the subscription limit of total DP-VOL capacity to pool capacity. This prevents a new DP-VOL capacity that exceeds the configured subscription limit from being allocated and is associated with the pool. If you specify more than 100% as the subscription limit or the subscription limit is not set, you must monitor the free capacity of the pool because it is possible that writes to the DP-VOLs may exceed pool capacity.

The used value displayed in the cell for Current in the Subscription (%) is truncated after the decimal point of the calculated value. Therefore, the actual percentage of DP-VOL assigned to the pool may be larger than the value displayed in the window. If you create a new DP-VOL of the same size as the existing DP-VOL, the larger capacity which is displayed in the Current cell is necessary.

For example, if 3 GB V-VOL is related to an 11.89 GB pool, the capacity (%) is calculated as follows:

(( ceil(3,072 (MB) / 3,145,548 (MB)) * 4 (Pages) * 42 (MB)) +
3,072 (MB)) / 12,175.36 (MB)) * 100 = 26.61....(%)

In this case, 26% is displayed in the cell for Current in the Subscription (%). If you create a new V-VOL of the same size as the existing V-VOL, 27% or more remaining capacity is necessary.