I have only tried to find the files that were missing. But is there any way I can recover the files that were on /volume1? Why have they been deleted? The two drives were configured in a mirror. When I SSH'ed into the unit the /volume1 folder was empty, except for an and folder.

I did not see any option to repair the volume. When it came back up it informed me that the volume had crashed. So eventually I turned off the power and rebooted it that way. It did not return, so I tried rebooting by long pressing the power button. I left it for some hours to finish working in case it was just using all its resources to do the upgrades. I could not SSH into the drive, access the web interface or access the shared drives. During that process the unit became unresponsive. I was upgrading some packages on my DS211J Synology drive. So I was hoping some linux gurus might be able to help out here. I just hope that this is a one-time thing and not an indication that my almost-new hardware is failing.I have also tried to contact Synology first, but haven't gotten a reply yet. Synology has done a good job of detecting drive disconnection and guiding the user through the removal and repair process. If not, I’ll need to replace the drive, then repair the storage pool by re-adding the deactivated or new drive to the pool: If the test passes, I’ll be ready to repair the degraded storage pool. The system advised me that the test will take something like 32 hours for this 16TB drive: I’m following the advice in the first article, with instructions from the second article, to run an extended S.M.A.R.T. HDD/SSD: Drive Tests, Analytics, and Predictions (It could just as well be the NAS drive slot that is faulty, or a more random loose connection.) Two helpful Synology knowledge base articles:ĭrive errors occurred, but I am not sure if they resulted from the drives or the drive slots. I could start the repair now, but first I want to test the drive and see if the drive itself is failing. So I guess I really do have to first go to HDD and Deactivate the drive,:Īfter removing the drive and re-installing it, it appears as Not Initialized: A pop-up message advised me that insufficient drives were available: I followed the advice in that message and tried to Repair. The storage pool shows the degraded status with the crashed drive: If the drives are healthy, please run a memory test on your memory module (refer to this article for instructions). Now the drive appeared in the HDD list as “Crashed”: If the drives are defective, please replace them. I re-inserted it and its drive light came back on and turned green. The HDD log shows “Drive plugged out.” And in fact, the drive’s light on the NAS is off, as if the drive wasn’t even there: The alert shows the storage pool degraded: (Be sure you have alerts working, especially if your NAS is in a location where the beeping might not be heard.) I thought I’d share some screen shots of what the failure and recovery process looks like. Checking email confirmed my suspicion that a drive had failed-the storage pool was in a “degraded” state. Today I arrived in my office to hear my new Synology DS-1520+ NAS beeping softly. Synology storage pool degraded error message is not necessarily a sign of imminent doom, but it is a sign of impending doom.

Synology drive crashed but healthy