Release notes
Object limits for SnapMirror active sync
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When preparing to use SnapMirror active sync, be aware of the following object limits.
Consistency groups in a cluster
Consistency group limits for a cluster with SnapMirror active sync are calculated based on relationships and depend on the version of ONTAP used. Limits are platform-independent.
| ONTAP version | Maximum number of relationships |
|---|---|
ONTAP 9.11.1 and later |
50 |
ONTAP 9.10.1 |
20 |
ONTAP 9.9.1 |
5 |
Volumes per consistency group
The maximum number of volumes per consistency group with SnapMirror active sync is platform independent.
| ONTAP version | Maximum number of volumes supported in a consistency group relationship |
|---|---|
ONTAP 9.15.1 and later |
80 |
ONTAP 9.10.1-9.14.1 |
16 |
ONTAP 9.9.1 |
12 |
Volumes
Volume limits in SnapMirror active sync are calculated based on the number of endpoints, not the number of relationships. A consistency group with 12 volumes contributes 12 endpoints on both the primary and secondary cluster. Both SnapMirror active sync and SnapMirror Synchronous relationships contribute to the total number of endpoints.
The maximum endpoints per platform are included in the following table.
| S. No | Platform | Endpoints per HA for SnapMirror active sync | Overall sync and SnapMirror active sync endpoints per HA | ||||
|---|---|---|---|---|---|---|---|
ONTAP 9.11.1 and later |
ONTAP 9.10.1 |
ONTAP 9.9.1 |
ONTAP 9.11.1 and later |
ONTAP 9.10.1 |
ONTAP 9.9.1 |
||
1 |
AFF |
400 |
200 |
60 |
400 |
200 |
80 |
2 |
ASA |
400 |
200 |
60 |
400 |
200 |
80 |
SAN object limits
SAN object limits are included in the following table. The limits apply regardless of the platform.
| Object in an SnapMirror active sync relationship | Count |
|---|---|
LUNs per volume |
256 |
LUN maps per node |
|
LUN maps per cluster |
|
LIFs per SVM (with at least one volume in an SnapMirror active sync relationship) |
256 |
Inter-cluster LIFs per node |
4 |
Inter-cluster LIFs per cluster |
8 |