We've been running ZFS on top of a single hardware RAID on dell poweredge for years. I know most people are against this, but the snapshot/clone, compression and flexible partition of ZFS served us very well. Whenever a drive dies, a dell technician is dispatched (the server is in another State), he will confirm that drive has an amber light, and replace it.
Now we want to take advantage of L2ARC/ZIL caching of ZFS, we are seriously thinking about running ZFS on bare disks. Current dell RAID controllers (PERC H730/H330) do support pass-through. My remaining questions are:
if a drive fails from ZFS, does it display amber light on the front panel? This is important because, the dispatched dell technician may need to confirm the drive is indeed faulty. Otherwise we may have problem with dell.
do any people run ZFS on FreeBSD root? It is in production quality? Any known issues?