Ok, so I have a disk down in my Linkstation LS520D 2*2TB.
No problem I thought, so searched and order an exact replacement drive a Seagte ST2000DM001 paying £15 more that its newer model the ST2000DM006, as I did not want any compatibility issues.
Anyway the drive turned up and yep you guessed it, I was sent the newer ST2000DM006. I decided to try it and although it was recognised fine, the LS520D had the RAID rebuild button enabled, but upon pressing it, it waited a bit and then it went back to the original screen, without any confirmation that the rebuild was underway.
Checking NAS Navigator, it still reported the RAID was running in Degraded mode and it should have reported I18 - Rebuilding RAID.
I note the newer disk had a later revision of firmware.
I returned the disk.
So word of warning to those in my situation. You seem to need an exact matched pair of disks.
I suspect this is a common problem, as by the time the first disk fails, the disk model has been superseded and therefore difficult to get a direct replacement.
Buffalo do have a Disk Compatibility List in PDF for download, however the models listed are now quite old, but they do say most Sata III disks should work, but they cannot guarantee it as they have not directly tested with those.
So I have copied my data to a USB drive for the moment and as I am struggling to get a ST2000DM001.
Knowing the other drive is the same age and therefore also likely to fail soon, I am going to order a pair of new drives and upgrade to a larger capacity (2 *4TB)
I am looking at a pair of Seagate IronWolf 4TB (ST4000VN008) drives. These drive spin at the slower 5900 rpm but are designed for NAS drives and 180 TB/year workloads. They also do a Pro model, but that is another £50 per disk more.
The question is, can any one confirm that these work OK in a Linkstation LS-520D?
Thanks in advance...