Physically moving aggregates
About physically moving aggregates
You can physically move aggregates from one storage system to another. You might want to move an aggregate to a different storage system to perform one of the following tasks:
- Replace a disk shelf with one that has a greater storage capacity
- Replace current disks with larger disks
- Gain access to the files on disks belonging to a malfunctioning storage system
You can physically move disks, disk shelves, or loops to move an aggregate from one storage system to another.
When performing either of these types of move, the following terms are used:
- The source storage system is the storage system from which you are moving the aggregate.
- The destination storage system is the storage system to which you are moving the aggregate.
- The aggregate you are moving is a foreign aggregate to the destination storage system.
You should only move disks from a source storage system to a destination storage system if the destination storage system has higher NVRAM capacity.
Note
The procedure described here does not apply to V-Series systems. For information about how to physically move aggregates in V-Series systems, see the V-Series Software Setup, Installation, and Management Guide.
Physically moving an aggregate
To physically move an aggregate, complete the following steps.
Step
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Action
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1
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In normal mode, enter the following command at the source storage system to locate the disks that contain the aggregate:
aggr status aggr_name -r
Result
The locations of the data and parity disks in the aggregate appear under the aggregate name on the same line as the labels Data and Parity.
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2
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Reboot the source storage system into maintenance mode.
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3
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In maintenance mode, take the aggregate that you want to move offline.
aggr offline aggr_name
Then follow the instructions in the disk shelf hardware guide to remove the disks from the source storage system.
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4
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Halt and turn off the destination storage system.
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5
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Install the disks in a disk shelf connected to the destination storage system.
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6
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Reboot the destination storage system in maintenance mode.
Result
When the destination storage system boots, it takes the foreign aggregate offline. If the foreign aggregate has the same name as an existing aggregate on the storage system, the storage system renames it aggr_name(1), where aggr_name is the original name of the aggregate.
Attention
If the foreign aggregate is incomplete, repeat Step 5 to add the missing disks. Do not try to add missing disks while the aggregate is online--doing so causes them to become hot spare disks.
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7
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If the storage system renamed the foreign aggregate because of a name conflict, enter the following command to rename the aggregate:
aggr rename aggr_name new_name
aggr_name is the name of the aggregate you want to rename.
new_name is the new name of the aggregate.
Example
The following command renames the users(1) aggregate as newusers:
aggr rename users(1) newusers
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8
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Enter the following command to bring the aggregate online in the destination storage system:
aggr online aggr_name
aggr_name is the name of the aggregate.
Result:
The aggregate is online in its new location in the destination storage system.
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9
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Enter the following command to confirm that the added aggregate came online:
aggr status aggr_name
aggr_name is the name of the aggregate.
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10
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Power up and reboot the source storage system.
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11
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Reboot the destination storage system out of maintenance mode.
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Part No. 210-01085_B0
File: 5aggr8.htm
Last updated: 01-Dec-2005 16:51:35