Disk Crash: What should I do?

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RobertB
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Disk Crash: What should I do?

Unread post by RobertB » Sun Sep 24, 2017 8:22 am

Good morning.

I have a DS214play with 2 x 3TB WD drives and a DX213 expansion with 2 x 3TB Toshiba drives. The Toshiba drives are about 3 months old.

I awoke this morning to find an error message saying that one of the Toshiba drives had crashed overnight after doing a backup (Hyperbackup).

I logged on and DSM offered to reboot the system and check the drives. I accepted this.

After rebooting all the drives reported as healthy.

I did a "quick" SMART test of the crashed drive and it came back as healthy.

Edited to add: There was a power failure a couple of days ago
.

What should I do next?

I'm inclined to copy the data on the "crashed drive" to the other Toshiba and then do an "extended" SMART test on the drive that crashed (reported to take 6 hours). Is this a good idea? If not what should I do?

Also, should I make a warranty claim for the "crashed" Toshiba drive?

Any advice gratefully received with thanks.

Robert

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eaz
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Re: Disk Crash: What should I do?

Unread post by eaz » Sun Sep 24, 2017 8:39 am

Best to check the smart values first, there are several like bad blocks (check on internet) that are meaningfull. Are any parameters in the danger zone?
What does the log file tell you about the cause?
Any drive may have an incidental read/write error an recover from it, in raid that leads to a crash easily.
As you know, it is often a bad omen, repeated issues will show up in smart values that change quickly and the drive should be changed.

Your proposal to secure the data looks the coorect action for me.
If one issue will justify a replacement: i would contact the supplier if it meets the requirements for rma. I have a very good supplier and my wd red was indeed replaced after one bad block issue.
Please share if a reply was useful or how the issue was solved, it helps other DS users.

DS415+ (4TB HGST+ 4TB Seagate raid1 + 2*480GB SSD raid1), DS212+ (2*WD red 2TB), previous DS411J, DS106

RobertB
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Re: Disk Crash: What should I do?

Unread post by RobertB » Mon Oct 09, 2017 12:02 pm

Thanks for your reply.
These symptons have now occoured 3 times. Each time the system reboots with the drive being SMART tested OK, both with quick and extended tests.

The sequence of events is the same each time:

A late night Hyper Backup executes from the DS214play to the DX213.
The DX213 wakes from hybernation.
A File System error is reported on Disk 1 (the target) in the DX213.
That disk crashes.
That disk is disconnected.

I then have to re-boot the DS and it checks the disk which turns out, so far, to be OK.

I'm begining to suspect that the disks in the DX are not compatible with hibernation???

Synologys compatibility tables say they are compatible by virtue of the fact that other drives from that manufactuere and series are compatible.

Edit to add: From what I can understand, and I'm no expert on SMART values, all the significant SMART values for failures come back as zero.

Any suggestions?

Robert

bubblegum57
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Re: Disk Crash: What should I do?

Unread post by bubblegum57 » Mon Oct 09, 2017 4:44 pm

RobertB wrote:Thanks for your reply.
These symptons have now occoured 3 times. Each time the system reboots with the drive being SMART tested OK, both with quick and extended tests.

The sequence of events is the same each time:

A late night Hyper Backup executes from the DS214play to the DX213.
The DX213 wakes from hybernation.
A File System error is reported on Disk 1 (the target) in the DX213.
That disk crashes.
That disk is disconnected.

I then have to re-boot the DS and it checks the disk which turns out, so far, to be OK.

I'm begining to suspect that the disks in the DX are not compatible with hibernation???

Synologys compatibility tables say they are compatible by virtue of the fact that other drives from that manufactuere and series are compatible.

Edit to add: From what I can understand, and I'm no expert on SMART values, all the significant SMART values for failures come back as zero.

Any suggestions?

Robert
One of my WD reds crashed, I went through the setup, verification, etc seemed ok, then it crashed again, I put it into an external enclosure, then zero filled it, tried again, a few days later it crashed.

A week or so later another volume crashed.

RobertB
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Re: Disk Crash: What should I do?

Unread post by RobertB » Mon Oct 09, 2017 4:54 pm

I'm very sorry to hear that. I hope you get it fixed.

bubblegum57
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Re: Disk Crash: What should I do?

Unread post by bubblegum57 » Mon Oct 09, 2017 4:56 pm

RobertB wrote:I'm very sorry to hear that. I hope you get it fixed.
I did fix it, by replacing both disks

roybrew
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Re: Disk Crash: What should I do?

Unread post by roybrew » Thu May 17, 2018 3:26 pm

I know this post is old, but I have hit a similar situation with my DS214play. One of the WD Red drives is showing a S.M.A.R.T. failure. Not much other information. What sort of RAID did you have configured? I have the Synology Hybrid Raid 1-disk fault tolerance. I've not had to deal with this before, so I am wondering if I can just replace the failing drive with a matching model and be back up and running? Or will I need to go through the entire setup again?

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eaz
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Re: Disk Crash: What should I do?

Unread post by eaz » Thu May 17, 2018 8:11 pm

Basically you are right: pull the bad disk, replace it, add the new disk to the volume, rebuild the raid and you are done.
The new disk does not need to match the old one, as long is it of same size or bigger that is ok.

But please follow the exact steps as given on the knowledge base:

https://www.synology.com/en-global/know ... oup_repair
Please share if a reply was useful or how the issue was solved, it helps other DS users.

DS415+ (4TB HGST+ 4TB Seagate raid1 + 2*480GB SSD raid1), DS212+ (2*WD red 2TB), previous DS411J, DS106

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