Hello,

 

I'm new to this forum as well as unraid, I've been using it now for about a month. Built my own system with 4 4TB drives from WD. I am running Plex Media Server as well as deluge torrent with vpn. I have the system email me a night status update and for the past 2 nights have received a warning that my parity drive has 192 read errors. I ran an extra parity check and discovered no errors. Anyone have any idea if I'm about to lose one of my drives? These disks are brand new. This is what I'm getting in the email:

 

Event: unRAID Status

Subject: Notice [TOWER] - array health report [FAIL]

Description: Array has 4 disks (including parity)

Importance: warning

 

Parity - WDC_WD40EFRX-68WT0N0_WD-WCC4E4JHA88C (sdb) - active 32 C (disk has read errors) [NOK]

Disk 1 - WDC_WD40EFRX-68WT0N0_WD-WCC4E7NYT94T (sdc) - active 32 C [OK]

Disk 2 - WDC_WD40EFRX-68WT0N0_WD-WCC4E6EE26RN (sdd) - active 30 C [OK]

Disk 3 - WDC_WD40EFRX-68WT0N0_WD-WCC4E4JHA4U5 (sde) - active 30 C [OK]

 

Parity is valid

Last checked on Mon 30 Jan 2017 05:24:44 PM PST (today), finding 0 errors.

Duration: 9 hours, 53 minutes, 57 seconds. Average speed: 112.3 MB/s

 

Anyone's help is most appreciated.

 

 

Post your diagnostics:

 

Tools -> Diagnostics

Here is the diagnostic file strait from the NAS .

tower-diagnostics-20170131-0906.zip

SMART for parity looks fine, but it does look like a disk problem:

 

Jan 29 08:27:22 Tower kernel:        res 51/40:6f:3f:03:39/00:02:5c:01:00/e0 Emask 0x9 (media error)

 

Recommend doing an extended SMART test.

I'd stop the array and power off.  Then double-check the cables to the parity drive -- unplug/re-plug both the data and power cables and be certain they're securely attached.  [be sure you don't loosen any of the other cables in the process.]

 

Then reboot and do an extended SMART test as Johnnie suggested.

 

If all goes well, run a parity check and confirm everything looks good.

 

If you still get read errors on the drive after that, I'd replace the drive.