Our WD Caviar Black 1TB WD1001FALS00E3A0 booted up very, very slowly. The transfer rate for the drive was as low as 400 kB/sec and as high as 4-8 MB/sec according to Windows 7 (while frantically trying to copy 100 GB of data off the thing). I have removed and reinstalled the AHCI drivers, installed intel’s storage driver (P67-based Asus motherboard), and HD Tune Pro is telling me that it’s operating in full UDMA mode.
The simple check for WD Lifeguard said all passed but using HD Tune Pro showed some warnings for
05 - reallocated sector count value of 1
C4 - reallocated event count value of 1
C5 - current pending sector count value of 18
It didn’t seem like a major drive failure but that C5 value hasn’t really gone away and the drive still performs incredibly slowly, even after days of hoping the drive would clear those C5 sectors.
Am I just very early in the failure of the drive (and doing a week of extended tests with WD Lifeguard will show that or push it over the edge) or can I get an RMA issued now ? Has anyone seen this before on an SATA drive running in AHCI mode ?