You can share SIz P-VOLs and S-VOLs with TCz P-VOLs and S-VOLs. However, you cannot share SIz S-VOLs with TCz S-VOLs.
The write operation on the TCz P-VOL takes more time when you share an SIz P-VOL with a TCz S-VOL. Especially when the SIz pair is in PSUP/SUSPVS status, the write operation takes more time because of the copy processing for the SIz pair.
For more information about splitting pairs, see Other pair splitting methods.
Restrictions
The following restrictions apply:
- When you share an SIz P-VOL with a TCz S-VOL, if you split the SIz pair during write I/Os to the TCz P-VOL, only part of write I/Os might be written to the SIz S-VOL. To keep data consistency in the SIz S-VOL, stop I/Os to the TCz P-VOL first, and then split the SIz pair.
- (VSP One B85) If you plan to Quick Restore the SIz pair, you must first suspend the TCz pair.
- You can perform a CTG pair-split on SIz pairs that share volumes
with TCz S-VOLs.
For more information about CTG pair-split for shared volumes, see Using consistency group pair-split with shared volumes
- (VSP One Block 85) If you request splitting all SIz pairs in the same consistency group, the request is accepted only when all associated TCz pairs are in PAIR, PSUS, or PSUE status. If the associated TCz pairs are not in any of these statuses, the status of the SIz pairs in the consistency group does not change. For details about whether SIz pairs can be split using consistency group pair-split for each TCz pair status, see Using consistency group pair-split with shared volumes.
For more information about sharing SIz and TCz volumes, see the .