hmmmm ok got this today:

Disk health
S.M.A.R.T. status: BAD
Reallocated sectors count: 1,872 (threshold exceeded)
Back up your data and replace the disk as soon as possible.
the NAS drive holds a lot of my backups and this is the first SMART warning i've ever seen. reallocated Sectors went from zero to a small number. should i replace it right away, or is it normal for a few sectors to go bad? 馃う i've read conflicting advice, so i'd like to hear from people who actually watched a drive with a warning like this... did it fail fast, or did it last for years? what am i doing wrong??

