Release notes
Consistency group limits
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When planning and managing your consistency groups, account for object limits at the scope of both the cluster and the parent or child consistency group.
Enforced limits
The following table captures limits for consistency groups. Separate limits apply for consistency groups using SnapMirror Business Continuity (SM-BC). For more information, see SM-BC restrictions and limitations for limits.
Limit |
Scope |
Minimum |
Maximum |
|---|---|---|---|
Number of consistency groups |
Cluster |
0 |
Same as maximum volume count in cluster |
Number of parent consistency groups |
Cluster |
0 |
Same as maximum volume count in cluster |
Number of individual and parent consistency groups |
Cluster |
0 |
Same as maximum volume count in cluster |
Number of volumes in a consistency group |
Single consistency group |
1 volume |
80 volumes |
Number of volumes in the child of a parent consistency group |
Parent consistency group |
1 volume |
80 volumes |
Number of volumes in a child consistency group |
Child consistency group |
1 volume |
80 volumes |
Number of child consistency groups in a parent consistency group |
Parent consistency group |
1 consistency group |
5 consistency groups |
Number of SVM disaster recovery relationships where a consistency group exists (available beginning ONTAP 9.14.1) |
Cluster |
0 |
32 |
Unenforced limits
The minimum supported Snapshot copy schedule for consistency groups is 30 minutes.This is based on testing for FlexGroups, which share the same Snapshot infrastructure as consistency groups.