The following figures explain how to take action when 602xxx, 604xxx, or 605xxx has occurred (for VSP 5000 series), or when 602xxx has occurred (for VSP E series).
(VSP 5000 series)
(VSP E series)
(VSP 5000 series) The pool capacity required for resolving SIMs is calculated as follows:
required-capacity = (capacity-used-by-pool / pool-threshold) - pool-capacity-before-expansion
When you expand a pool using LDEVs created from parity groups of which accelerated compression is enabled, the total amount of the LDEVs should meet the following conditions:
total-capacity-of-LDEVs-to-be-created ≤ (physical-amount-of-parity-group / (1 –deletion-rate)) –
- capacity-of-pool-volumes-belonging-to-applicable-parity-group-of-pool-before-expansion
Determine whether to expand a pool by comparing the results calculated by using the above formulas.
When
required-capacity ≤ total-capacity-of-LDEVs-to-be-created
The insufficient capacity can be reserved by using the available capacity in a parity group of which accelerated compression is enabled.
When
required-capacity > total-capacity-of-LDEVs-to-be-created
To reserve the insufficient capacity, add a parity group to create an LDEV, and then expand the pool.
Note that the threshold and the deletion rate used for the calculation are expressed as a fraction converted from a percent. For example, if the threshold is 80%, enter 80/100 as the pool threshold for the calculation.