Your best bet in repairing the unit is.????
If data must be recovered. BACKUP ALL DRIVES USING DD. It can make a image of the drives, for backup only. You can not read it. If you do image the drives with dd. You will be looking at 24 hrs +. To make a raw copy of the drives.
Do you have a copy of
SpinRite from
GRC.com. It works with most any drive and OS, XFS is not listed, though, raids are. It is the best option if you are going to need data recovery, with out sending in to a recovery service, which cost $$$$$.
If you hook the drives up in a attempt to read the drives you will proably loose all data. It will not reconize the File System. If you want to try use FreeBSD it is what the snap OS is build off of.
Only a 4000 will be able to read the data from a raid 5. Install into another 4000. But with the boot damged ????? Don't know.....
I would try to determine if you have a hardware failure or Drive/os failure.
Since the boot drive and Flashram (?) are damage. I would mark all drives as for position. I would then install a new drive in to position 1 (first). See if the unit formats the drive ands loads the OS. If so you will be able to recover. If not it gets more difficult.
If you are able to boot with 1 drive. The unit should have held the raid configuration. If so, see if you can set drive 1 up as a spare. Install the remaining drives. With any luck. It should comeup and start resync /rebuild the raid 5 set.
If Not.
Install a drive with the boot image file allready pre-loaded on the the drive. This will test the hardware. If it fails to boot. You have a hardware problem. Either the MB, Ram, or PS is bad. Get you multimeter out and check the PS. These are limited on power. And 250gig drives seam to be close the the max it can handle.
This should be a starting point.
If you do image the drives with dd. You will be looking at 24 hrs +. To make a raw copy of the drives.