July 12, 20178 yr I'm not sure what's going on - but it's been doing this for a while now. My overall system seems to be not operating correctly. I've looked at my logs, but I'm not exactly sure what things mean. I'm also not the best linux guy. I've had zero issues with my array, until recently. I was running out of room, so I added an additional drive. 10x 4TB WD Reds When I added the latest drive, I basically added it and completely recomputed parity. Any help would be great. P.S. I have tried to copy a file directly to different disks, including one of the SSD's attached. Nothing, results in faster write speeds. I have checked networking switch as other PC's besides this server are on it. Don't have a way to try a different ethernet card, as the one on it - is built in to the mobo. unraid-diagnostics-20170711-1936.zip Edited July 12, 20178 yr by kenmaglio
July 12, 20178 yr It is VERY VERY common when adding or exchanging a disk in the array in which you have to put you hands inside the case, that you knock one of the sata cables every so slightly askew, creating an intermittent connection. Drive cages are highly recommended to avoid this, and allow easy exchanging and adding drives without risking cabling issues. At this point I'd recommend reopening the case and carefully resecuring all the cables. And afterwards go on ebay and try to find some CSE-M35T-1B drive cages!
July 12, 20178 yr Community Expert Almost certainly a network problem (NIC/switch/cable), initial writes are cached to RAM so even if there was an array issue you should see line speed for the first few gigabytes. As for the ATA errors, check/replace cables on that disk.
July 12, 20178 yr Author The disk was already in the system - just sitting there as a spare - never cracked the case since I built it. I can check as well. I did find two drives, which had fdisk warnings: The backup gpt table is corrupt, the primary appears ok, using that. In working with that, never did any writes. Another drive appeared to go unrecognized. Not sure what was going on to be honest. I did a safe repair of the disk / rebuild - and things oddly appear better. Still only 10MB / sec. which is very slow still.
July 12, 20178 yr Author Just enabled a cache disk that's a usb3 external spin disk - and only getting 10mb / sec. no parity .. So something it up on networking - maybe my switch is going bad... odd -- cause gaming etc. from other PC's on the same switch work just fine.
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