ATA error count has increased in the last day

Stianoh wrote:
ok! thanks! Model: ReadyNAS Duo [X-RAID] Firmware: RAIDiator 4.1.8 [1.00a043] Disk 1 Seagate ST31000528AS 931 GB , 38 C / 100 F , Write-cache ON Disk 2 Seagate ST31000528AS 931 GB , 38 C / 100 F , Write-cache ON both disk was in when i bought it. what do you mean with "You might want to shut down the NAS, remove the drive, and test it with vendor tools."? that i should put it in my computer?

Yes -

install Seatools (download it from the Seagate site
Then shut down the NAS from Frontview, and remove the drive
Connect the drive to an unused SATA and power, and have Seatools test it.

BTW, if you ever remove both drives, make sure to label them, so you can keep them in the same slots.

Though you probably have enough evidence already to RMA the drive (assuming it is still under Seagate warranty). They will replace it with a refurbished drive. If you are in the US, you can have them ship you the refurbished drive first, then you can ship back the failed one. There is a small charge for this service to cover shipping - but it is reasonable, and you get the replacement much quicker that way.