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ReadyNAS reports dead drive - replacement shows the same
I received notification that one of my Seagate Constellation ES.2 (i.e. designed for NAS applications) drives had failed. I managed to find an exact replacement and it arrived today. However, once ...
It is possible that the SATA port for that bay has failed.
I suggest testing the replacement disk with Seatools (and perhaps also test the original disk while you are at it).
Also, you could try powering down the NAS and removing the power cord for a bit (say 15 minutes) - in order to clear any state maintained by the bios. Then remove all the disks (labeling by slot), and try a fresh factory install using the replacement disk - putting it in one of the known working bays. After you verify the install, power down the NAS and move the disk to the failed bay, and see if the NAS boots properly.
It is possible that the SATA port for that bay has failed.
I suggest testing the replacement disk with Seatools (and perhaps also test the original disk while you are at it).
Also, you could try powering down the NAS and removing the power cord for a bit (say 15 minutes) - in order to clear any state maintained by the bios. Then remove all the disks (labeling by slot), and try a fresh factory install using the replacement disk - putting it in one of the known working bays. After you verify the install, power down the NAS and move the disk to the failed bay, and see if the NAS boots properly.
Thanks Stephen. I tried option #2 as I don't have any reasonably easy way to connect the drives to my desktop in order to use Seatools. I used an old drive installed in slot 1 (known good), did a factory reset and it came up successfully. After powering down, I moved it to slot 3 (where the disk failure occurred) and it successfully booted again. The SATA port thus appears to be fine and the likely suspect is the replacement drive.
Last question: Since the ReadyNAS has been reset, is there any procedure for re-installing my old drives (other than ensuring they go into their original slots)? If re-installed, will it boot up as before the most recent reset? I'd hate to put a foot wrong and lose the still good data on the three remaining drives.
Really appreciate your help.
Since the OS is installed on the drives, you need only put the drives back in with the power off and then power on.
Thanks again everyone. Rather than take another chance (and wait another 7-10 days) for an exact replacement, I stopped off at a local retailer and picked up an IronWolf 4TB (ST4000VN008). It's ostensibly slower (5,900 rpm vs. 7,200) and isn't on the officially-supported list (which is hopelessly out of date for legacy NAS units in any case), but it should be a good-enough replacement. Best of all, it was accepted by the NAS and is busy synching as I type. I'll sleep better once the array is redundant again.
Much appreciated for the quick and accurate responses.
I hope the mix of drive speeds gives you no trouble. When I was swapping out all drives on a NAS recently (under OS 6.9.2, I believe) and the newer ones had a slower speed, it gave me a warning about mixed drive performance when I swapped out the first one. I know it was a problem with some drives under OS 4.2.x, but have not seen it in 6.x. In 4.2.x, I had to turn off spin-down because one of the slower drives (not always the same one) in a mixed drive configuration (all on the compatibility list) would sometimes come up too slow compared to the others and be marked "dead" by the OS.
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