Consistency group 127

TrueCopy® User Guide
Version
9.8.7
Audience
anonymous
Part Number
MK-98RD9022-18

When you create pairs using Device Manager - Storage Navigator, they can be assigned to only one consistency group, 127. (You can also use CCI to assign pairs to CTG 127.) With CTG 127, you can ensure the following:

  • When a pair is split or suspended for any reason, you can ensure that all P-VOLs in the group become suspended.
  • If data paths between the secondary and primary system fail, you can ensure that all S-VOLs are placed in PSUE status.

For more information, see CTG 127 behavior and restrictions when a pair is suspended.

  1. Turn Function Switch 30 On.
    • Turn on the switch in the primary and secondary systems to get the desired result in each system.
    • Turn on the switch in the system where you want the behavior: either consistent P-VOL suspensions for the primary system, or consistent S-VOL PSUE status for the secondary system.
  2. Create the pairs and assign them to CTG 127.
    • In CCI, assign the pairs to this group number when you create the pairs.
    • In Device Manager - Storage Navigator, pairs are automatically assigned to CTG 127 when the pairs are created and function switch 30 is On.