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Asked by CSGRP in Storage Technology, Hard Drives & Storage
Hey guys, I'm new to Navisphere, Clariion and EMC in general. So I've pretty much been self teaching the "proper" way to do things. The question I have is what are the downsides to expanding a Meta across diskgroups already utilized within that meta?
Obviously this is not ideal as I won't be getting the performance from extra spindles. But other than that are there any reasons this is frowned upon? I've read a few people say you should never do that, but they didn't clarify why.
I'm also assuming I should try to stripe it whenever possible, I've been designing my luns and disk groups to allow for easy expansion via stripes in the future. However If I don't have a set of disk groups at full capacity and am short on cash, I'd like to restripe across them.
In short, is there any performance difference beyond between creating a giant meta up front, or creating a smaller one at first then expanding it later across the same disks?
20091021-EE-VQP-81 - Hierarchy / EE_QW_3_20080625