Chris212 wrote:
Weird...
7000s cannot use compression and all issues with 3.3.1 are mostly related to DECO volumes.
Do not understand this choice.
All
documented issues, maybe.
We went to 3.3.1 on our 7400 at the beginning of December (we were promised 64TB virtual volumes back in 2015 when we bought the thing apparently) and even though we don't use dedupe or compression, we've still had a few instances where the Windows cluster attached to the storage just... stops. It's as if the storage disappears, but from the 3PAR console, everything looks fine.
Turns out, the node has a "credit page leak" which causes some particular area of space on the node to drop to zero and it seems to silently fail and rather than failing gracefully and handing over Master Node status to another, nothing happens. Manually rebooting the nodes clears the space for a while (and is all HP have suggested - they've put on a script that monitors the nodes, but it doesn't email when it triggers an alert, so it's not overly useful at the moment), but we're waiting for Patch 21 to actually fix this.