October 12, 20232 yr I'm using 6.12.4. When I selected the parity drive during device assignment, it just disappeared. There didn't seem to be a way to review or change the assignment. I went ahead and assigned array and pool devices, started the array and formatted everybody. Things look normal (green dotws everywhere) except that there's no sign of the parity drive. On the Dashboard tab, under Parity, it says Parity disks not present. On the Main tab, there's no sign of the parity disk. Under Array Operation, it says Started with the orange triangle exclamation mark and the hover text says Started, array unprotected. Tools, System Devices, SCSI Devices is the only place I see the parity disk. Is this normal? Is this just what it's like when the initial parity build is in progress?
October 12, 20232 yr Community Expert 8 minutes ago, gssdu said: I'm using 6.12.4. When I selected the parity drive during device assignment, it just disappeared. There didn't seem to be a way to review or change the assignment. I went ahead and assigned array and pool devices, started the array and formatted everybody. Things look normal (green dotws everywhere) except that there's no sign of the parity drive. On the Dashboard tab, under Parity, it says Parity disks not present. On the Main tab, there's no sign of the parity disk. Under Array Operation, it says Started with the orange triangle exclamation mark and the hover text says Started, array unprotected. Tools, System Devices, SCSI Devices is the only place I see the parity disk. Is this normal? Is this just what it's like when the initial parity build is in progress? No. It looks like the parity drive must have dropped offline. It is worth checking the power and SATA cabling to the drive. You may have to power cycle the server to get the drive back online.
October 13, 20232 yr Author 8 hours ago, itimpi said: No. It looks like the parity drive must have dropped offline. It is worth checking the power and SATA cabling to the drive. You may have to power cycle the server to get the drive back online. It shows up in lsblk, so I'm pretty sure the power and connection are good. Looks like it doesn't have a partition like all of the other drives do though. I will post diagnostics as soon as I learn how to do that.
October 13, 20232 yr Author Here are the diagnostics.babel-diagnostics-20231013-0837.zip babel-diagnostics-20231013-0837.zip babel-diagnostics-20231013-0837.zip
October 13, 20232 yr Author Sorry for the double post; it said that the first upload failed but it looks like it worked.
October 13, 20232 yr Author There are a lot of ATA errors, I/O errors to sdb which is the parity disk. Funny that the Unraid UI hides all of this. Looks like my disk is DOA.
October 13, 20232 yr Community Expert Constant ATA errors with sdb, which I assume is parity, replace/swap cables and post new diags.
October 14, 20232 yr Author Tried a different SATA cable, same SATA port on the MB: same errors on ata2/sdb Also tried the second cable, different SATA port on MB: errors moved to ata3, but look the same. I'm thinking it looks a lot like the drive is bad. babel-diagnostics-20231014-1618.zip babel-diagnostics-20231014-1609.zip
October 14, 20232 yr Community Expert You could check the health of the drive by clicking on it on the Main tab and running the extended SMART test.
October 14, 20232 yr Community Expert Solution 2 hours ago, gssdu said: I'm thinking it looks a lot like the drive is bad. Most likely, it's not even giving a valid SMART report.
October 16, 20232 yr Author WD have agreed to issue an RMA. My only remaining question is should I (whilst waiting for the replacement drive) proceed to populate the array with data, and add the parity drive later, or should I wait for the parity drive to be in place before adding the data? Or does it not make a difference?
October 16, 20232 yr Community Expert There is a lot to be said for adding data before the parity drive as writes to the array are faster at that point. You are, however, without protection against data drive failure without the parity drive.
October 18, 20232 yr Author Thanks @itimpi for your suggestion. I do understand that I'll be without protection until I can get a parity drive installed. I'm thinking it's a risk I will take as it should not be too long to get my replacement drive in place.
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