Increase disk capacity in existing RAID?

Short answer is no. You can expand the size of a Pool by adding more disks, but you can't increase the size of the internal raid groups within the Pool by swapping out the disks one at a time with a larger capacity disk.

FYI - I'd also recommend that when creating a Raid 5 Pool that you use multiples of 5 disks (4+1)  or 9 disks (8+1) as that is a better configuration for Raid 5 than others - 6 disks will get you a 5+1 and has a slightly lower overall performance.

glen

Yes you can, however, you will end up with what you started with, so it would be a waste of time...

Best to just create a new storage pool with the new disks, LUN migrate the existing devices from the old pool to the new pool, then destroy the old pool to reclaim the disks...

EMC does not recommend mixing disks of different capacities within the same pool tier, but since I suspect the disks in question are EFDs, there may not be the same concern as with HDDs...

I'm sure others will weigh-in on the topic...

Are you the only TSE working in the ECN space? Is this part of your official job description somewhere?

Jeff

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Thanks for all replies.

Can you link me to the LUN2LUN migration as this was my first thought, but i read a post (on this forum) that it is not supported with VNXe, only VNX?

My fault as i see that the topic is in VNX and not VNXe! I thought i had posted it in the right thread.

Thanks for all responses.

That's right, LUN migration is not possible on VNXe yet. It would be a nice addition though.

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