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Does my HDD need to be replaced?
Have 2 x 3TB Segate in my ReadyNAS Duo V2 One failed on me last night so have replaced it with a WD Red - the second Seagate is now also showing some early signs - what do you guys think? ...
ATA errors might be the drive, but they can come from the NAS, or from adjacent drives that are messing up the SATA interface.
The 24 pending sectors are definitely the drive. That means there are 24 sectors that couldn't be read. If writes had failed, they would have been reallocated. But you can't reallocate on reads, because you don't know what data to write into the newly reallocated sectors.
I'd test the drive with Seatools. Even it if passes, look at the SMART stats when the diag finishes. Acronis Drive Monitor is one freeware tool that will show the SMART stats (though you do need to give them your email address to download it).
My personal threshold is (a) > 50 or (b) counts beginning to rise, with new reports every couple of days. If I kept this drive in service, I'd be watching it very closely, and I'd make sure my backups are current.
Disk 2
ST3000VX000-1CU166 2794 GB (45 °C / 113 °F, Write-cache On). Status: OK
Have any of the counts gone up recently?
Do you have a backup?
ATA errors might be the drive, but they can come from the NAS, or from adjacent drives that are messing up the SATA interface.
The 24 pending sectors are definitely the drive. That means there are 24 sectors that couldn't be read. If writes had failed, they would have been reallocated. But you can't reallocate on reads, because you don't know what data to write into the newly reallocated sectors.
I'd test the drive with Seatools. Even it if passes, look at the SMART stats when the diag finishes. Acronis Drive Monitor is one freeware tool that will show the SMART stats (though you do need to give them your email address to download it).
My personal threshold is (a) > 50 or (b) counts beginning to rise, with new reports every couple of days. If I kept this drive in service, I'd be watching it very closely, and I'd make sure my backups are current.
Thanks for the response.
I have a Minix PC and an external USB Caddy (dont think the Caddy support SMART - so apparently I will lose all that info - not sure).
Can I use these tools to check the integrity of the drive in the USB Caddy?
The ATA counts are increasing - currently 182.
Backup - currently = none.
Bought a new WD RED HDD - Rsync has just completed however......
"RAID sync finished on volume C. The array is still in degraded mode, however. This can be caused by a disk sync failure or failed disks in a multi-parity disk array."
Not sure what I need to do in order to get the RAID to re-establish.
Ok, well your priorities have just changed by declaring that you have no backup.
You should firstly ( and soon) backup your data.
Then you can test the disks if you wish, but this latest piece of info (resync failure) would make me replace the disk right away ( after backing up the data).
What does the GUI say about the disks, also look at the smart data of BOTH disks (yes including the new one you have just put in)?
Did you test the new disk before putting it in?
What firmware is on the device?
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