2012-08-30 12:01 AM
I need your help for the following scenerio.
We have a FAS2040 in use and we had nearly 6 TB inside and we added extra 3 TB by adding extra disk shelf.
Then we added disk to the existing aggregate but some disk in the same raid group and some in new raid group. (12 disk - 5 to existing aggregate and 7 disk to new aggregate).
In this aggregate we had 3 volumes of around 1.87 TB each and we increased the space to 2.84 TB now. We have 3 LUNS created on 3 volumes and mapped to ESX server. We are using ESX4.1.
But now as per VMWare ESX 4.1 will support only LUN upto 2 TB and we need your help to sort this out and do the best practice to decrease the size of the LUN and create new LUN of 1 TB each.
Thanks for your understandings. Your reply is really appreciated.
2012-08-30 02:20 AM
what is the ontap version?
Check for the occupied size of LUN using lun show -v ,if it is ontap 8.0
If the lun occupied size is less than 1 TB so easy you can reduce the LUN size and volume size.
If it is more than 1 TB need to take a backup of VMDK file & do a restore .Also can do a volume migration if the storage space is available.
2012-08-30 02:29 AM
I'm assuming that you've not created any new volumes or luns since adding the extra disk capacity.
In that case the answer is fairly simple, just create a new volume and lun to the size you want and use storage vmotion to move the VM guests over (potentially without down time). Once you've cleared a volume, delete it and create a new one to your preferred size, repeating as needed.
In theory you could resize the luns, but I'm not sure VMWare will like that much.
2012-08-30 02:39 AM
Yes I haven't created any new volumes. Could you please let me know how long it will take to reclaim the space when I delete the existing LUN for creating new LUN.
Thanks and Regards,