2 disks SHR, one have bad sectors. How to proceed?

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Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Thu Aug 02, 2018 6:44 pm

Is it possible to access the files from removed disk? File format is accesible from windows? I will buy a docking station to see if i can backup everything from disk 1.

telos
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by telos » Thu Aug 02, 2018 7:13 pm

Marttyn wrote:
Thu Aug 02, 2018 6:44 pm
Is it possible to access the files from removed disk? File format is accesible from windows? I will buy a docking station to see if i can backup everything from disk 1.
https://www.synology.com/en-us/knowledg ... using_a_PC

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Thu Aug 02, 2018 7:31 pm

NO WAY! :shock:
I need to install ubuntu just to recover the files from the disk!? No other software can handle this?
All this is going to kill me slowly... :(

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Fri Aug 03, 2018 11:48 am

Ok... installed Ubuntu on a pen drive, mounted an old PC, and boot it from the USB!! :D
But... is it really necesary to go through all those steps, install mdadm and lvm2?
Can not simply connect the drive and copy the files?
As it was a SHR volume, will it work with only one of the two drives?

dario_zgb
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by dario_zgb » Fri Aug 03, 2018 12:12 pm

You could try to read the drive without that but as this is what SHR is based on (mdadm etc.), as this drive was part of an array and as this is recommended by Synology it would be wise to use that.
--
DS416play (4x4TB WD Red, SHR) * DS216se (2x3TB WD Red, RAID 0) *
DS214se (2x2TB WD Red, SHR) * DS115j (2TB WD Blue) * RT2600ac

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Fri Aug 03, 2018 7:56 pm

Well... there it is... Was not easy, but i could install ubuntu on a USB pendrive, and from there to mount the synology drive.
Now im creating a backup of the disk 1 that was about to send to WD, luckily me i didnt erase it.
Im guessing that i will have to start my Synology from scratch? No way i can do something to keep everything as it is? Disk 1 seems to be working fine at the moment. But as it was ejected the DSM dont recognize it anymore :(
I would love to keep everything as it is. My Apps, my configs, my users and their files...
I will take a lot of time to set it up again :cry:

At least im able to keep my files... 30 hours left to have all my files copied to the other drive.
Is there a way to check if the files are OK?

dario_zgb
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by dario_zgb » Sat Aug 04, 2018 9:18 am

Marttyn wrote:
Fri Aug 03, 2018 7:56 pm
I would love to keep everything as it is. My Apps, my configs, my users and their files...
I will take a lot of time to set it up again :cry:
There is an option to export DSM configuration in Control Panel. This includes users and shared folders. You could have exported the config and then reimported it back in if you decide to start from scratch.
--
DS416play (4x4TB WD Red, SHR) * DS216se (2x3TB WD Red, RAID 0) *
DS214se (2x2TB WD Red, SHR) * DS115j (2TB WD Blue) * RT2600ac

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Tue Aug 07, 2018 4:16 pm

This does not include the downloaded software, the configuration for that software, the "tweeks" applied, the shared links generated... :(

Ive contacted Synology almost a week ago, and still no reply :x

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Fri Aug 10, 2018 6:33 pm

Well... sadly i had to start my DS from scratch with both WD replacements i received, and i could recover most of the files on my own. Still some files are corrupted, but couldnt find a way to get them, even when i have them mirrored on both disk, as one of them dont mount.
This is the hard way to learn that a RAID is not a backup. Now i will find a way to make a backup remotely.
Synology assistance replied a few days ago with a canned reply, but no real help. Asked again, but i think they need about 1 week to reply every ticket :?
Thank you all for your help!

telos
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by telos » Fri Aug 10, 2018 10:32 pm

Marttyn wrote:
Fri Aug 10, 2018 6:33 pm
Well... sadly i had to start my DS from scratch with both WD replacements i received, and i could recover most of the files on my own. Still some files are corrupted, but couldnt find a way to get them, even when i have them mirrored on both disk, as one of them dont mount.
Did you try to mount the "good one" from a computer?

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Sat Aug 11, 2018 8:30 am

Yes, the good one was mounted on a computer using Ubuntu. But with the same procedure couldnt mount the other.

telos
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by telos » Sat Aug 11, 2018 8:42 pm

Marttyn wrote:
Sat Aug 11, 2018 8:30 am
Yes, the good one was mounted on a computer using Ubuntu. But with the same procedure couldnt mount the other.
Maybe I've misunderstood you, but if only 2 disks on SHR system, they would be identical. So files from disk 1 = files from disk 2. If you mounted the one, you should be able to see your files.

Or... remove the bad disk and boot NAS with only the good disk NAS should boot "degraded", but you have access to all files for copy/backup.
Last edited by telos on Mon Aug 13, 2018 2:41 pm, edited 1 time in total.

Marttyn
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Re: 2 disks SHR, one have bad sectors. How to proceed?

Unread post by Marttyn » Mon Aug 13, 2018 10:03 am

Yes, both disks are mirror. But one disk have some sector damage, and some files are corrupted. So i was willing to access the other drive, to get those files. This other disk also have some bad sectors, but probably they dont affect the same files.

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