- May 29, 2011
Is this box hosting live VM storage, or just a backup destination for vmdk files? If the latter, RAIDZ2 should be fine. If the former, striped mirrors are preferred.
Even if it's backup vmdk's, the constant write-rewrite activity for the vmdk's will tend to cause a lot of frag behaviour over time. Not anywhere near as bad as live vmdk's, but, still....