Hello, I have an old NAS device (Iomega StorCenter ix4-200d 2.1.48.30125) which has failed to warn me that things were going awry. The NAS is now in a state that appears unrecoverable from its limited GUI, and is asking for overwrite confirmation on all 4 drives (1.8TB WD drives). This smells of data loss, so I hopped on the box and did some investigating: I can "more" to find data on each of two partitions for each of the 4 drives /dev/sd[abcd][12] so the drives are functioning in some capacity. I believe this is running in a RAID 5 configuration, at least that's what the settings state. Here's what I'm working with... # mdadm --version mdadm - v2.6.7.2 - 14th November 2008 I believe the array was first created in 2011. Not sure if the disks have been replaced since then, as this array was given to me by a friend. I am unsure of how I should go about fixing this, and which (if any) drives truly needs replacing. My next step would be to try: # mdadm /dev/md1 --assemble /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2 (and if that didn't work, maybe try the --force command?). Would this jeopardize data like the --create command can? I've compiled output from the following commands here: https://pastebin.com/EmqX3Tyq # fdisk -l # cat /etc/fstab # cat /proc/mdstat # mdadm -D /dev/md0 # mdadm -D /dev/md1 # mdadm --examine /dev/sd[abcd]1 # mdadm --examine /dev/sd[abcd]2 # cat /etc/lvm/backup/md1_vg # dmesg # cat /var/log/messages I don't know if md0 needs to be fixed first (if it's even malfunctioning). I have never administered RAID volumes at this level before. Would appreciate any help you can provide. Thanks!
