= Replacing Failed Drive on deleuze =

== Locate Failed Drive ==

Each drive bay has a pair of LEDs; drives in normal operation will both be green (top potentially blinking). A failed drive's lower LED will be blinking amber four times per second.

== Remove Failed Drive ==

The Dell documentation says the drive must be prepared for removal, but there appears to be no way to do this. We have safely removed a drive blinking amber before; follow the Dell maintenance manual instructions for removing the drive and pray to a deity of your choice that this is actually safe.

== Install Replacement Drive ==

This should be straightforward -- unscrew the old drive and screw the new drive into the sled, and install.

The lower LED on the sled may blink amber for a second or three and then should become steady green. If not something is awry. 

== Check RAID Status ==

As root on deleuze run (where N = logical drive number that had a failed drive):

{{{
megarc -ldInfo -a0 -LN
}}}

This should report the `Physical Target Status` of the new drive as `RBLD` and the logical drive as a whole should still be `DEGRADED`. The rebuild can be monitored by running:

{{{
megarc -showRbld -a0
}}}