Different number of snapshot count seen on source and destination cluster in SM-BC
Applies to
- ONTAP 9
- SMBC (SnapMirror Business Continuity)
- Common Snapshot Schedule (CSS)
- Consistency Groups (CGs)
Issue
- There is snapshot policy set on source CGs to maintain local snapshots.
- Snapshot Copy Policy:
default-1weekly - Which keeps 1 each for daily, weekly and hourly snapshot on each volume on source cluster CG.
- Which is working as expected.
Source cluster:
Vserver Volume Snapshot Size Total% Used%-------- -------- ------------------------------------- -------- ------ -----SVM_PRD DRC_SR_VMWARE_01_A1weekly_16203c70-9578-11ee-b3b8-d039ea56b41c.2024-10-13_0015 388.3GB 3% 13%snapmirror.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583412.2024-10-15_121458 43.02GB 0% 2%snapmirrorCG.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583412.2024-10-16_121610 35.12GB 0% 1%daily_16203c70-9578-11ee-b3b8-d039ea56b41c.2024-10-17_0010 23.99MB 0% 0%snapmirrorCG.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583412.2024-10-17_001501 20.38GB 0% 1%hourly_16203c70-9578-11ee-b3b8-d039ea56b41c.2024-10-17_1605 38.60MB 0% 0%- However, on destination cluster a greater number of snapshots are seen compared to Source cluster.
Destination cluster:
Vserver Volume Snapshot Size Total% Used%-------- -------- ------------------------------------- -------- ------ -----SVM_DR DRC_PQ_VMWARE_01_A1_destweekly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-13_0015 35.93GB 1% 1%snapmirror.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583406.2024-10-13_200127 56.86MB 0% 0%snapmirror.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583406.2024-10-13_200151 345.4GB 7% 12%snapmirrorCG.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583406.2024-10-16_121610 77.43GB 2% 3%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0005 50.90MB 0% 0%daily_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0010 71.20MB 0% 0%snapmirrorCG.1f8b80ae-4eab-11ec-81de-d039ea4b78c6_2156583406.2024-10-17_001501 239.3MB 0% 0%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0105 37.39GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0205 6.52GB 0% 0%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0305 26.31GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0405 188.2MB 0% 0%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0505 30.89GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0605 263.1MB 0% 0%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0705 27.78GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0805 307.5MB 0% 0%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_0905 35.00GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_1005 30.61GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_1105 24.88GB 1% 1%hourly_826c17db-9577-11ee-b3b8-d039ea56b41c.2024-10-17_1205 142.1MB 0% 0%