Hi,
I plan to migrate a volume from aggr1 to aggr2, since aggr1 capacity has reached full and the volume can't be expanded anymore.
The volume is snapmirrored to a standby FAS, 1st DR FAS and 2nd DR FAS in cascade.
Please find the below system configuration.
My question is how to replicate data from the current volume to new volume. I come up with 2 method, described below in #5 and #6.
Can somebody suggest me which way would be correct ? Thank you in advance.
1. ONTAP; 8.1.2 P4 7 mode
2. Current location of the volume : FAS - aggregate - volume (vol role, size)
1) FAS_1 - aggr1 - vol_a (Primary 2,000GB)
2) FAS_2 - aggr1 - vol_a (Standby 2,000GB)
3) FAS_3 - aggr1 - vol_a (DR1 2,000GB)
4) FAS_4 - aggr1 - vol1_a (DR2 2,000GB)
3. Snapmirror topology
FAS_1:vol_a -> FAS_2:vol_a -> FAS_3:vol_a -> FAS_4:vol_a
4. Goal
1) FAS_1 - aggr2 - vol_a (Primary 10,000GB)
2) FAS_2 - aggr2 - vol_a (Standby 10,000GB)
3) FAS_3 - aggr2 - vol_a (DR1 10,000GB)
4) FAS_4 - aggr2 - vol1_a (DR2 10,000GB)
5. Migration Plan1
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5-1. Create vol_a_new on aggr2 on FAS_1 / FAS_2 / FAS_3 / FAS_4
5-2. Replicate data from current volume to the new volume.
snapmirror initialization and run a daily snapmirror for a week or so.
FAS_1:vol_a -> FAS1:vol_a_new
FAS_2:vol_a -> FAS2:vol_a_new
FAS_3:vol_a -> FAS3:vol_a_new
FAS_4:vol_a -> FAS4:vol_a_new
5-3. Unmount the primay volume from servers.
5-4. Break snapmirror
FAS_1:vol_a -> FAS_2:vol_a -> FAS_3:vol_a -> FAS_4:vol_a
FAS_1:vol_a -> FAS1:vol_a_new
FAS_2:vol_a -> FAS2:vol_a_new
FAS_3:vol_a -> FAS3:vol_a_new
FAS_4:vol_a -> FAS4:vol_a_new
5-5. rename volumes
FAS_1:vol_a -> FAS1:vol_a_old
FAS_2:vol_a -> FAS2:vol_a_old
FAS_3:vol_a -> FAS3:vol_a_old
FAS_4:vol_a -> FAS4:vol_a_old
FAS_1:vol_a_new -> FAS1:vol_a
FAS_2:vol_a_new -> FAS2:vol_a
FAS_3:vol_a_new -> FAS3:vol_a
FAS_4:vol_a_new -> FAS4:vol_a
5-6. restart snapmirror
FAS_1:vol_a -> FAS_2:vol_a -> FAS_3:vol_a -> FAS_4:vol_a
5-7. Mount the primay volume to servers
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6. Migration Plan2
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6-1. Create vol_a_new on aggr2 on FAS_1 / FAS_2 / FAS_3 / FAS_4
6-2. Replicate data from current volume to the new volume.
snapmirror initialization sequentially and run a daily snapmirror for a week or so.
FAS_1:vol_a -> FAS1:vol_a_new -> FAS2:vol_a_new -> FAS3:vol_a_new -> FAS4:vol_a_new
6-3. Unmount the primay volume from servers.
6-4. Break snapmirror
FAS_1:vol_a -> FAS_2:vol_a -> FAS_3:vol_a -> FAS_4:vol_a
FAS_1:vol_a -> FAS1:vol_a_new -> FAS2:vol_a_new -> FAS3:vol_a_new -> FAS4:vol_a_new
6-5. rename volumes
FAS_1:vol_a -> FAS1:vol_a_old
FAS_2:vol_a -> FAS2:vol_a_old
FAS_3:vol_a -> FAS3:vol_a_old
FAS_4:vol_a -> FAS4:vol_a_old
FAS_1:vol_a_new -> FAS1:vol_a
FAS_2:vol_a_new -> FAS2:vol_a
FAS_3:vol_a_new -> FAS3:vol_a
FAS_4:vol_a_new -> FAS4:vol_a
6-6. restart snapmirror
FAS_1:vol_a -> FAS_2:vol_a -> FAS_3:vol_a -> FAS_4:vol_a
6-7. Mount the primay volume to servers
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