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TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Tue Oct 16, 2018 7:55 pm
by khdexter
Hi, Ive never really had an issue with the TS420 until now, seems to have some gremlins going on. If someone knows why this happened it would be much appreciated
TS-420
4.3.3.0663 build 2018082
2xWDRed 2tb
2xSeagate 2tb ST000VN000

RAID 5 suddenly became inactive and the two seagate drives are showing as do not exist in SMART and the capacity now shows that of a 4tb drive for each of them, green lights still on the drives.
did have the power out for the day and have completed the firmware upgrade, wondering if the upgrade has had an impact as well

No access to any data

Dexter

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Tue Oct 16, 2018 9:17 pm
by dolbyman
anything in the system log ?

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Wed Oct 17, 2018 4:54 am
by khdexter
Hey there,

Type Date Time Users Source IP Computer name Content
Information 2018/10/04 21:21:07 System 127.0.0.1 localhost Host: Drive3 read error corrected.
Warning 2018/10/04 21:19:39 System 127.0.0.1 localhost [Harddisk 3] medium error. Please run bad block scan on this drive or replace the drive if the error persists.
Warning 2018/10/04 21:19:39 System 127.0.0.1 localhost [Harddisk 3] I/O error, sense_key=0x3, asc=0x11, ascq=0x4, CDB=28 00 00 12 bb 88 00 00 08 00 .
Type Date Time Users Source IP Computer name Content
Error 2018/10/04 22:15:02 System 127.0.0.1 localhost Plugged drive failed to work.
Warning 2018/10/04 21:26:14 System 127.0.0.1 localhost [Antivirus] Failed to update virus definitions. Please try again later or update the definitions manually.
Error 2018/10/04 21:23:16 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4] RAID device is inactive.
Information 2018/10/04 21:21:27 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4] Drive 3 removed.
Error 2018/10/04 21:21:15 System 127.0.0.1 localhost Drive 3 unplugged.
Information 2018/10/04 21:21:08 System 127.0.0.1 localhost Host: Drive3 read error corrected.

Drives two and three have dropped out

Cheers

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Wed Oct 17, 2018 5:23 am
by Don
So drive 3 dropped out 12 days ago. Anything in the log about drive 2?

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Wed Oct 17, 2018 5:15 pm
by khdexter
Well had to go back a bit but what do you know this happened in June

Type Date Time Users Source IP Computer name Content
Warning 2018/06/12 16:42:27 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4] RAID device in degraded mode.
Information 2018/06/12 16:42:27 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4] Drive 2 removed.
Error 2018/06/12 16:42:16 System 127.0.0.1 localhost Drive 2 unplugged.

I was given no warning of this and why would a drive suddenly unplug???????????

Shouldnt i have had some other warning other than in a log?

Dexter

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Wed Oct 17, 2018 9:32 pm
by dolbyman
did you set up email warnings?
did you look at the nas hdd leds in the front ?

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Thu Oct 18, 2018 12:23 am
by Don
So a drive failed in June and you did nothing about it. Then a drive fails in October and now your RAID 5 array is gone. RAID 5 will only survive a single drive failure. I hope you have recent backups as you will need to rebuild from scratch with new drives.

As dolbyman asked, did you not have alerts set up?

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Thu Oct 18, 2018 3:05 pm
by khdexter
Have got some recent backups (six months ago) so not too concerned about that but did wonder why the light didn't turn red on either of the drives as they have in the past when there was an issue. I was sure there was an email alert set up but will look into that to double check, didn't do anything about it in June because i was not aware of the issue...maybe i just need to log in a bit more often

Re: TS-420 2 Seagate HDD's suddenly missing in RAID 5 now inactive

Posted: Thu Oct 18, 2018 3:58 pm
by khdexter
** it, the email alert wasn't on...is now but all too late...a trap for new players...still would like to know why the lights are still green on the drives and under volume management they come up as being 4tb instead of 2tb drives with ready status. Spose stranger things have happened. Thanks Don n' Dolbyman