[Duo v2] bad sectors because the two disks are different

filzip77 wrote:

Thank you all for your replies. I have just upgraded the firmware of the disk. The old firmware was CC4C and it is now CC4F. Let see if the SMART errors will continue to increase. Do you think that these are real errors or just false errors related to the firmware? When I do deep scan (with Seatool), it finds no error. I coul then assume there is no real error ... If something goes wrong, my most important folder is backed up with Crashplan. Philippe

Once a sector is reallocated, you won't see any errors. However, it will slow down performance (due to excessive seeking) and lots of reallocated sectors is a strong indicator of total failure.

If you have a tool that can read the SMART stats independently from the NAS, that would would be useful (Acronis Drive Monitor is a freeware tool that does that). The SMART stats are kept in the drive itself, so you should be able to get them from from any machine.

Also, if you re-insert the drive into the NAS pay close attention to any further increase. 1552 reallocated sectors is a huge number, normally Netgear suggests replacement at 50.