Yesterday we had to replace a faulty disk in a Dell PERC. We followed the walkthrough as described in the excellent PERC Cheat Sheet, but apparantly, this made the LED next to the drive blink. Took me a while to find how to disable it, but in the end it was fairly obvious. Since a simple Google query didn’t show me any results, I thought it best to document it here. The drive that was blinking was in Enclosure 8 and Drive 3.
megacli -PdLocate -stop -physdrv[8:3] -a0
Update: Nope, that didn’t fix it after all. But a reboot of the machine did. No idea why that is.