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January 15th, 2015 09:00
Replacing drive with larger capacity
If I have a CX4 using a POOL configuration, and I have a drive fault and need to replace, but I don't have a drive of the same capacity.
Can I replace with a larger capacity drive, or does the drive size have to match?
If I use a larger drive, do I need to do anything to the POOL itself to make use of the larger drive to increase the space in the POOL?
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usao
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222 Posts
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January 15th, 2015 11:00
Our goal is to phase out the smaller drives and if/when a replacement is needed, to use the larger drives.
One of the downsides to POOL storage seems to be that I don't have a way to remove disks.
We can shrink the POOL %used, but don't have enough space to create another larger pool in it's place, so we have to do the upgrade in-place.
If I had used raid-groups, I could shuffle things around, and expand or re-create the raid group, but I don't see a way to do this with POOL storage.
Our pool spans 6 of the DAE's in the CX4-120 array, and is filled with the 146GB drives.
Tray 0 has hot spares and snap pool, and the last tray has SATA 2Tb drives.
Is there any way to break-up the pool into smaller components or am I just stuck?
There is not enough room in the SATA tray to hold all the luns in the POOL, so I can't completely empty-out the pool...
kelleg
4.5K Posts
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January 15th, 2015 11:00
If the new drive is the same type - FC or SATA and the same speed for FC (FC can be either 10K or 15K RPM), then you can use the new drive to replace the old drive, but you will lose all the extra space - it will be seen as the same size as the old drive.
If the Hot Spare is replacing the failed drive you should be able to wait until you get a new drive of the same size.
glen
kelleg
4.5K Posts
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January 15th, 2015 12:00
There is no way to remove disks from a Pool once the Pool is created.
glen