Hello David,
In the same boat here. That "announcement" snuck past us too.
Check out that asterisk in the letter:
Quote:
* Please note that this End of Life announcement does not over-ride any existing contract that you may have with HP to receive software LTUs or support.
Escalate for an online upgrade if doing it offline is a hardship for the business, leverage your sales team/engineer to make this happen, assuming you have an active support contract. The online upgrade will be to 3.1.1, then to whatever higher version you want (basically 2 upgrades).
There are a couple touch points with 2.3.1 to 3.1.1, about 4 Microsoft KB patchs for MPIO, certain cluster disks needing to be put into maintenance mode, and then the issue with Windows 2008/2012 taking the volumes offline after a reboot.
For the last issue, HP recommends the execution of Microsoft KB2849097 on every Windows Server 2008/2012 host connected to a HP 3PAR array.
For the upgrade from 3.1.1 to 3.1.2 I didn't see any mentioned of cluster disks in maintenance mode, but they still have the luns offline work around.