As a follow-up to my article related to possible VmWare ESX 3.5i Kernel Panic on HP Proliant DL380 G6 systems with integrated Smart Array p410i controller configured in Zero Memory Mode (error 0xAB), please note that HP released a Critical Update (2.72B) that fixes another issue inducted by firmware 2.50.
After firmware 2.50 update, the Smart Array controller erroneously reports drive hot remove event, causing unnecessary rebuilds. I have seen this behaviour reported both in HP Management Agents as well as on ESX server logs.