Thinking on your feedback....
- Yep, this is gonna be tough :-)
- Our XIV has VAAI but I won't know if the UNMAP primitive is available (or work) until IBM puts new code on it in a few weeks. Haven't had much luck with their VAAI code in the past (4.x)
- Can I avoid the UNMAP issue altogether by evacuating the VM's on VMFS3 LUNs with svMotion-to-thin-disk on 1MB VMFS5? Subsequently I could destroy the VMFS3 volumes on the XIV and let it perform reclaim on its own?
- I looked at SDELETE. The description seemed to indicate that it overwrites with its own pattern. How does SDELETE reclaim space?
- I checked out your article on adjusting heap size. We'll definitely keep that in mind!
Thanks!
Dennis