October 30, 20178 yr I have an array of 4 8TB WD Red drives, one of which was parity. I wanted to try out an enclosure and during the night the fan died and apparently caused the drives to over heat. One of the drives, drive 1, was dead when I woke up. I turned everything off, bought a completely different enclosure and a new 8TB WD Red. I put it into the enclosure and tried to rebuild. It ended up having an error. I realized I hadn't precleared it so I had it do that, in maintenance mode, for a while. Three full passes later and it seemed fine. I rebuilt the array in maintenance mode over another few days. Today I turned on the server in normal mode and everything seemed fine at first. I was able to access everything fine. I turned on Docker, updated things, and turned on my VM. There were lots of files being moved around but it seemed fine for a while. Then I got a message about Disk 1 being in an error state again and the contents being emulated. I have moved nothing and everything should be fine. I never reseated anything or touched any cables since it made it through preclear and rebuild. Any assistance would be appreciated. When the first drive died I had an LSI card in there just for an 8088 connector to the enclosure, but since then I got rid of that and put a SATA card in there with an eSATA connector for the new enclosure. The only thing even slightly out of the ordinary about the system is that it has a VM with some video card pass through. I don't suspect that to be involved, but I figured I should let you know any way. Unraid version 6.3.5 IO Crest SI-PEX40062 card for eSATA Mediasonic H82-SU3S2 ProBox enclosure tower-diagnostics-20171030-1739.zip
October 30, 20178 yr Community Expert 45 minutes ago, Xixix said: When the first drive died I had an LSI card in there just for an 8088 connector to the enclosure, but since then I got rid of that and put a SATA card in there with an eSATA connector for the new enclosure You should have kept the LSI, you're using two not recommend things, a Marvell controller and a port multiplier, disk 1 is disable but if you look at the main page all your disks have errors, you'll need to change your setup, it will never be reliable as is.
October 30, 20178 yr Author I had read that USB 3 could only detect one drive. So does that mean the only option to having it stable is some sort of 8088 connector or just 1:1 SATA cables? I originally got that specific SATA card because some one on the forums had success with this exact setup, except they had the 4 bay enclosure and I got the 8.
October 31, 20178 yr Community Expert IMO the only reliable external enclosure is one with a SAS connection, eSata with port multiplier and USB should be avoided as array devices, doesn't mean it can't work, but most often than not it will be a headache. You can try again after disabling VT-d, it may work better, but would really recommend a setup change if possible.
October 31, 20178 yr Author Do you have a recommended enclosure or company that makes enclosures? I will just reorder the LSI I bought the first time but I would rather not get that same enclosure. And sadly I need the VT-d for the VM device pass through.(I think any way) Edited October 31, 20178 yr by Xixix
October 31, 20178 yr Community Expert I have some of these, the 5 disk model, they are hard to find though, I bought some on ebay for $50. http://www.xtore.com/downloads/datasheet/XJ100_PUB-00040-D_Final.pdf
November 19, 20178 yr Author Thank you for your help. I ended up making my own DAS inside a Silver Stone case connected to a LSI 8088 card and have not had any issues at all.
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