ONTAP 9 Manuals ( CA08871-402 )

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Object limits for SnapMirror active sync

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

ETERNUS AX

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

  • 4096 (ONTAP 9.10 and later)

  • 2048 (ONTAP 9.9.1 and earlier)

LUN maps per cluster

  • 8192 (ONTAP 9.10 and later)

  • 4096 (ONTAP 9.9.1 and earlier)

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

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