MP unit and pair deletion

ShadowImage User Guide

Version
9.8.7
Audience
anonymous
Part Number
MK-98RD9021-17

The MP unit assigned to an S-VOL cannot be used if a pair is created because the MP unit assigned to the P-VOL is also assigned to the S-VOL. Deleting the pairs returns the allocation of processor responsibility to the state it was before the pairs were created. However, the allocation cannot be returned in either of the following cases:

  • A user changed the allocation of the MP unit assigned to an S-VOL cannot be used if a pair is created because the MP unit for the P-VOL or S-VOL of the SI pair.
  • When the pair is deleted, the write pending rate of the MP unit assigned to an S-VOL cannot be used if a pair is created because the MP unit to which the S-VOL belongs is 50% or more, or the write pending rate of the original MP unit assigned to an S-VOL cannot be used if a pair is created because the MP unit is 50% or more.

If the original MP unit assigned to an S-VOL cannot be used if a pair is created because the MP unit is already removed, assign another MP unit assigned to an S-VOL.