The rules of LUN Migration on Clariion
- The Destination LUN should be equal in size or larger than source LUN
- A destination LUN can be on the same type of drives as the source, or a different type of drive. For example, you can migrate a LUN from Fibre Drives to ATA Drives .
- It can be same or different Raid type (Ex: you can migrate from Raid-5 to Raid 1/0)
- It can be a regular or Meta LUN
- LUN migration is an online activity, it wont stop IO hence you don't have to bring down your services.
It is a two step process. First it is a block by block copy of a “Source LUN” to its new location “Destination LUN”. After the copy is complete, it then moves the “Source” LUNs location to its new place in the Clariion.
Below i am migrating a LUN from Raid-5 to Raid 1/0. Source is LUN-6 under Raid Group 1 and destination is LUN-29 under Raid Group 10
1. Create the destination LUN, this should be equal or bigger than source LUN, I have created an equal size of source
Now my source is under Raid Group1 and Destination under Raid Group 10
2. Right click the source LUN which is LUN 6 under Raid Group 1 and choose Migrate..
3.This will open a new window where you can select the destination, please note the source and destination LUN capacity
4. Select the LUN and click OK, click Yes on the warning window
5. Go the source LUN status, you will it is on Transitioning state
Check the properties, you can see the Migration status
6. Finally LUN is migrated and can see the source LUN id under the Raid Group 10, now it is Raid 5
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