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Forum Discussion
resinch a dieing disk or add new disk & resinch?
Apologies again. I posted the same message in the "Test" board, and got complete unnoticed / unseen. As it is rather urgent, I am re-posting it here, where I hope it will be seen. I could not find a board which deals specifically with "problems" actually.
Somewhat relevant, I have been away for two months (and away again for a similar period around Xmas), and done nothing on the NV+ since last october/november. I had VERY SLOW remote access to the NV+ while away, because of local speed/connectivity issues.
The real problem:
I have a NV+ with three 3Gb HDs, with (I think) 38% free space on the 3 disk capacity, X-Raid, PLUS a spare 3GB HD (brand new, bought with HD3) which I was about to fit.
Just to make sure that the point is clear, 6 months ago I added the 3rd disk when I had 90% space occupied. By now all the data would NOT fit on only two disks.
One hour ago a copy operation could not be carried out "lack of space on disk", so I opened the dashoard to investigate. I found a warning from yesterday, "Disk 1 fail", now paused.
I restarted (from the dashboard) and after the rebooting the dashboard went in an "unavailable" state. When I looked at the NV+, it had started to resinch (0%).
I stopped it immediately, via the front button, NV+ very responsive with immediate shutdown.
Should I:
a) restart the NV+ and let it resinch, then ADD the new HD,
or
b) add the new HD now, restart and let it resinch directly with the new HD on board.
Not sure what shoud I do after, (remove the falty-ing HD, run diagnostics, reformat it/carry out some disk maintenance exclude bad sectors or other).
Many thanks in advance, berillio
Somewhat relevant, I have been away for two months (and away again for a similar period around Xmas), and done nothing on the NV+ since last october/november. I had VERY SLOW remote access to the NV+ while away, because of local speed/connectivity issues.
The real problem:
I have a NV+ with three 3Gb HDs, with (I think) 38% free space on the 3 disk capacity, X-Raid, PLUS a spare 3GB HD (brand new, bought with HD3) which I was about to fit.
Just to make sure that the point is clear, 6 months ago I added the 3rd disk when I had 90% space occupied. By now all the data would NOT fit on only two disks.
One hour ago a copy operation could not be carried out "lack of space on disk", so I opened the dashoard to investigate. I found a warning from yesterday, "Disk 1 fail", now paused.
I restarted (from the dashboard) and after the rebooting the dashboard went in an "unavailable" state. When I looked at the NV+, it had started to resinch (0%).
I stopped it immediately, via the front button, NV+ very responsive with immediate shutdown.
Should I:
a) restart the NV+ and let it resinch, then ADD the new HD,
or
b) add the new HD now, restart and let it resinch directly with the new HD on board.
Not sure what shoud I do after, (remove the falty-ing HD, run diagnostics, reformat it/carry out some disk maintenance exclude bad sectors or other).
Many thanks in advance, berillio
46 Replies
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- Can you test the failed disk on a PC?
- right now it is still in the NAS. I can remove it, put it in this PC in place of the current drive (I do not have another free SATA power cable), boot off the HIREN Tool disks and run diagnostics.
But my worry is that any HD activity may endanger the disk (and the DATA on it). So I may as well add the new disk, and after the first resinching has been done, remove the disk and do all the testing or diagnostic; if it fails, and it is not recoverable anymore, I let NAS resinch without disk#1. - The data is of course spread across all the disks in the volume. If you have no backup, there is some risk to it.
The "lack of space" error doesn't seem obviously related to the failure on disk 1, and of course if you have 38% free space, you shouldn't be getting that error.
If disk 1 is indeed damaged, then it would be best to avoid a resync with it installed.
You could remove disk 1 and boot up - that would eliminate a resync. Then perhaps back up the critical data at least and insert the new disk. There is still some risk of data loss. - running diags on another pc
HIREN CD14
HDD Scan for Windows vers 3.3
ST3000DM001-9YN166-W1F0WXJW
Firmware CC4B
LBA 156 556 5872
SMART Class not registered (... ??? )
then PC died. :-(
rebooted and loaded Seagate disk Wizard
Nope, it is a Clone /Image / Add disk proggie, no diagnostic
on a 3rd reboot I manage to stop the POST info, SMART Capable and Staus OK
running Seagate Seatools
"Smart is supported and Enabled"
"SMART has NOT been Tripped"
DST is Supported
Logging feature set IS supported
POH 12917, Current temp 32"
Started Short Test @23:27.39
Short DST Passed @23:28.43
Started Long Test @23:29.40 currently running, it may take a while, after 5 mins I only a single line in the Progress bar - it may take 2h or more)(if the pc does not die again) - Seatools crashed into a DOS line, not sure why. The pc did not die like the first time around (this PC has not been booted fo 6 months, and it was "temperamental" but that was mostly an OS issue).
I am confused about your advice. You mean that I should reboot the NAS as it is now (HD1 removed as it is been tested, HD2 and HD 3 in place), let it "rebuild" the Volume, then add Disk 4..?
Starting testing with Victoria 4.6b (lots of buttons which I would not know how to use :-( )
SMART Monitor says "Good"
The "Test Button seem to be doing a Surface test, which isn't what I think I need right now. Exiting Victoria
HD Tune 2.55
Health = OK
Error Scan (quick) = OK, (no Block damage)
Benchmarking (do I need this? anyway..)
Transfer rate
Minimum = 116.2 MB/sec
Maximum = 121.6 MB/sec
Average = GRRR pc died again, before I could read the average
Access Time
Burst Rate
I guess it is hard to say if the disk is provoking these crashes, or if it is an unrelated PC issue.berillio wrote: Seatools crashed into a DOS line, not sure why. The pc did not die like the first time around (this PC has not been booted fo 6 months, and it was "temperamental" but that was mostly an OS issue). berillio wrote: I am confused about your advice. You mean that I should reboot the NAS as it is now (HD1 removed as it is been tested, HD2 and HD 3 in place), let it "rebuild" the Volume, then add Disk 4..?
If you reboot it as it is now, it shouldn't rebuild anything. It will do a volume scan, and attempt to repair any damage it sees with the file system (such attempts can sometimes result in data loss). But it won't rebuild the RAID array (in fact it can't).
If there's data to copy off, then do it when it boots. Then insert your spare disk into slot1.- Running HD Tune again
Benchmarking the MAXTOR 500GB HD which is on that pc.
Absolutely AWFUL compared to the SEAGATE disk. Transfer rate started at 109.4 / 95 MB/sec, but started dropping after 30% disk to a 48.5 minimum. Total average 85.5,
Access time 12.8
Burst Rate 108.4 MB/sec
CPU usage 5.0 %
PC died again
Running HD Tune again on the Seagate (NAS) Disk
Minimum = 116.8 MB/sec
Maximum = 121.6 MB/sec
Average = 120.3 MB/sec
Access Time 11.0 ms
Burst Rate 110.6 MB/sec
CPU Usage 7.6 %
PC died again (getting fed up with this)
Well, for what I can see from all the tests I run, the HD does not seem to be THAT faulty. I understand that the re-synching will stress the disk, and the NAS already started a re-synching. I am not sure if I should then:
a) refit HD1 (which NAS said it failed once), let it resynch (on the basis that all the tests I run so far seemed to be passed OK). I run the risk of a failure and data loss.
b) fit HD4 (new) and let NAS rebuild a "failed drive" (as in http://www.readynas.com/kb/faq/boot/how ... ailed_disk ). I presume that I still run the disk of data loss.
c) if no data loss had occurred doing (b) run exhaustive test /reformat HD1 and, if tests are successful, refit HD1
Note. I cannot do a backup, as i do not have enough capacity, although I have a brand new 104 with a 4Tb HD, from a friend who did not like it (I bought it off her), but I wasn't planning of putting it "online" yet. I guess it is hard to say if the disk is provoking these crashes, or if it is an unrelated PC issue.
There is something funny with many things of that particular PC, and not just the OS. In particular, the ON/OFF switch seems to be "stuck in" and sometimes I wonder if it isn't a totally trivial hardware fault.
Also I am not sure about the fact that the SEAGATE (NAS) disk performed much better than the MAXTOR, but called for 50% more CPU use (7.6% instead of 5.0%. Basically (I am totally clueless about this specific point) I did not expect to see a difference there (unless it is implicit by the better performance of the HD, average writing speed 120.3 MB/sec instead of 85.5 MB/sec)If you reboot it as it is now, it shouldn't rebuild anything. It will do a volume scan, and attempt to repair any damage it sees with the file system (such attempts can sometimes result in data loss). But it won't rebuild the RAID array (in fact it can't).
Then I am TOTALLY confused.
When I rebooted the NAS (with HD1 "paused", if I remember correctly), after the reboot, the dashboard did NOT come up as usual. Basically I could not do anything, see the logs etc.
So I checked the NAS, found it re-synching, and powered it off immediately.
Just to clarify, what is the difference between:
Volume Scan
Re-synch
RAID Rebuild
and what would I need, to end up without (if possible) any data loss, like it was 15h ago?
Also, how do I invoke a RAID rebuild (if this is what I need)?If there's data to copy off, then do it when it boots. Then insert your spare disk into slot1
But when I will reboot NAS, will it not start re-synching (like it was doing already), and correcting errors (and maybe incurring in data loss) ?
Besides, even If it did only a "quick" volume scan" (but how could it possibly do that, with HD1 missing?), I would not have the space to copy the ~5 - 5.5ish TB of data.
I feel like i am going around in circles.... :-/- Thursday morning. Just a quick update.
Overnight I run Western Digital Data Lifeguard Diagnostic (DLGDIAG for windows),
SMART status was PASS.
Run the Short test and passed it.
Run the Extended test on the HD. It run for 6h27m29s - Test completed successfully.
Sectors 0 to 5860533167
Write Zero test - well it will erase the drive, not done.
Interesting, while writing these notes, the PC shut down and died again.....
Also last night I downloaded Seatools for Windows from the NETGEAR link. it was a VERY SLOW download, and when few minutes ago I tried to run it, it said that it failed the CRC check and did not install and run. so I will try to download it again.
Another note: the PC used for testing seems to be increasingly temperamental, it took few attempt to boot up, shutting down (and restarting) during boot up. I wonder if the PSU is failing or MORE TO THE POINT, the SEAGATE HD is not sapping up too much power to spin around (which is what you suggested straight away)
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