June 13, 20179 yr Hi All! Have been trying unRAID for a couple of weeks now and getting ready to pull the trigger on purchasing when I keep running into disk errors, two separate times, on different disks, but same hardware interface. I would like to figure this out before I continue with unRAID to make sure this is hardware related and not software. The original errors were displayed on JMicron_Generic_DISK03_* which had a 1 TB drive installed. No SMART errors that I could see, but I yanked the drive from the system since I didn't want to take any chances and was upgrading the storage any how. I didn't think to collect logs or anything at the time. Just the screen shot showing the errors for the disk (attached). I swapped the 1 TB drive for 2 TB drive in the same drive bay. Just as the parity check was wrapping up from the new drive config, I get another set of errors; same drive bay, different drive. SMART on the new 2 TB drive is showing nothing alarming to me. I am using a Vantec HX4 connected to a Dell T30 server. It is the Vantec showing up as JMicron_Generic in the logs were both disks have shown errors. I was thinking that it could also be related to disks spinning down and the Vantec not getting spun up soon enough during a read request? Most of the data is media for Plex container so... Any help would be great. Thank you in advance... benir-diagnostics-20170612-2102.zip
June 13, 20179 yr Community Expert Although USB devices can be used as part of the array it's not really recommended, in part for performance reasons, but mainly because they can be very flaky and error handling is usually much worse than internals, some enclosures are better than others, but you should use SATA/SAS devices only.
June 13, 20179 yr Author Well that isn't the answer I was hoping for really. In having the Dell T30 server, hard drives are maxed at 4x 3.5" and 2x 2.5". I was hoping for a couple more hard drives to add to my array.
June 13, 20179 yr Well that isn't the answer I was hoping for really. In having the Dell T30 server, hard drives are maxed at 4x 3.5" and 2x 2.5". I was hoping for a couple more hard drives to add to my array.I have the T20 and was looking at doing the same thing, add two drives inside and possibly a couple more externally but with a SATA card. Just have to find one that works with unRaid and doesn't cost an arm and a leg.
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