Anssi Saari wrote: > debian-u...@howorth.org.uk writes: > > > Serious disk enclosures have lights that can be turned on to indicate > > which disk has failed. > > Yes. I take it the actual question is, is there a DIY version of that? > This sort of thing is why I mostly do just mirroring.
If each disk has an activity LED but not an addressable fault LED, you can run dd if=/dev/sdX of=/dev/null to keep the activity LED lit for a while. Addressable fault LEDs usually have a manufacturer-specific tool to turn them on and off; this is generally controlled by a RAID controller utility or an enclosure-specific utility. -dsr-
