This is a bit of an issue. I've just test installed ESX 3.5 onto a HS21 XM (7995) blade BIOS v 1.07, everything is fine and the server boots fine and runs stable but everytime I reboot from the console or restart using VI-Client I get a purple screen of death.
Now I know that there is an issue with quad-core Xeons and HS21 blades, but wasn't this fixed with the latest BIOS versions? I believe it was fixed with BIOS 1.06 on the normal HS21 but was this same fix applied to HS21 XM (7995) v 1.07?
IBM and VMware support tickets have been opened, but any working fixes out there?