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QNAP - NAS - RAID 5 issues - IT Help!

ianw

ianw

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Hi

Have a rack mounted QNAP NAS 8 * 2TB disks in RAID 5 here in the home office, disk 8 has failed and tried to hot swap with a replacement disk, Raid hasn't started to rebuild and this seems to be the problem.

Because the disk 2, 3, 4, 5, 6, 7 are having the disk partitions missing issue

disk 2 = sdb
disk 3 = sdc
disk 4 = sdd
disk 5 = sde
disk 6 = sdf
disk 7 = sdg

QNAP haven't been able to help, is all lost?

Any IT type people here?, as beyond my local office support guy!

Any help would be appreciated, or is it a reformat jobbie?

Regards
 
My man who knows these things says:

You should manually have to start the rebuild option. Strange that QNAP can’t help what exactly do they say? You may be able to rebuild the RAID using software if you get them out as long as they weren’t encrypted discs.
 
Disks contain some work, but my life's collection of DVD, Bluerays & CDs in lossless format, may be of been months of ripping
 
Moonraker said:
My man who knows these things says:

You should manually have to start the rebuild option. Strange that QNAP can’t help what exactly do they say? You may be able to rebuild the RAID using software if you get them out as long as they weren’t encrypted discs.
Click to expand...

He's right! Should start automatically, however sometimes it doesnt.

Qnap are crap - had one for several years. Tech support rubbish, Firmware updates reguarly fixed numerous problems, however caused a lot more.

Synology, OR a homebuild with something like freenaz or openmediavault. really easy to do and highly customizable.

Anyhow - a Naz is NOT an infalliable storage option. I have known LOADS break, with the data irretrievable.

Buy a 5Gb drive, and back all your valuable stuff up every month, and Store offsite.
 
What exactly is the status of the array?
RAID5 can sustain a single failed member, so losing one spindle should not render the data inaccessible simply a loss of redundancy and a drop in performance.

You may have a failed array member and an additional member with errors, or this is actually a 2nd failure and the initial one wasn't noticed....

You may need to 'allocate' your replacement drive to the array to allow it to rebuild, but thb that would be pretty unusual

If it is a fatal situation I'd recommend in the future running RAID6 as opposed to 5 (or better still RAID10) and making very sure that the array will send you a warning via e-mail or SNMP

You should be able to log into the device and see what's going on, so start there to see whats what from the controllers perspective
 
What's the status of the new drive in the array, you might have to set it to spare. I've not used one of these fisher price qnap things before though. ;)
 
cat /proc/mdstat

What does that say in a telnet session?
 
The second file shows the system has recognised the replacement drive and has called it a spare (drive 8) whilst slot 7 shows faulty removed. I think you have to get the sapre remove from the system and have it replace the faulty removed one. So manual rebuild required me thinks.
 
The Hitachi HDS723023BLA642 is the make of HD. Looks like the array is fubar, you have a spare and a faulty disk.

You used to be able to get them back as a one shot with msa's but I doubt qnap have such commands.
 
It looks like drive 7 first failed, and that failure was un-noticed, the array was then running in a degraded state.
Then subsequently drive 8 failed which caused the array to fail entirely.
It isn't doing anything with the newly replaced disk 8 as there is nothing it can do - it can't rebulild a failed array, so it will just mark the disk as spare....
 
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