>Is there another easy way I can positively ID a drive by serial number and the /dev/sd[a-z] that mdadm sees? I don't know of a tool like tune2fs or *fstune that works for mdraid. You might try on the mdadm list where Neil Brown hangs out... Given the wealth of easy ways to manage and monitor the health of an lsi card, I'd never entertain this on any of my systems that use them...