NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
ReadyNAS Ultra 4 - The array is still in degraded mode
Hello just added two new 4 TB drive to my Ultra4; first drive loaded and sync correctly however after installing, test and sync the 2nd I'm now in Unprotected mode with the following messge: "RAID s...
dlavineway wrote:
I've tried posting the mdstat.log contents multiple time unfortunatly the post keeps disappearing, trying it as an attachment
Likely just caught in the spam filter.
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md4 : active raid5 sda5[0] sdb5[1] 976750784 blocks super 1.2 level 5, 64k chunk, algorithm 2 [2/2] [UU] md3 : active raid5 sda4[4] sdc4[3] sdd4[2] sdb4[5] 5860511616 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU] md2 : active raid5 sdd3[7] sdb3[5] sdc3[4] 2916119040 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/3] [_UUU] md1 : active raid1 sda2[6] sdb2[5] sdc2[4] sdd2[7] 524276 blocks super 1.2 [4/4] [UUUU] md0 : active raid1 sda1[6] sdb1[5] sdc1[4] sdd1[7] 4193268 blocks super 1.2 [4/4] [UUUU] unused devices: <none>
It looks like the problem is with md2 (and that you started off with a 4x1 TB array).
You could try
- removing the disk
- power down the NAS
- disconnect from the power main for a few minutes (maybe 15)
- reboot the NAS
- reinsert the disk.
Part of the rationale here is to clear out any bios state associated with the disk. Sometime the NAS drivers will declare a SATA bay down, and this should make sure it's up again.
What RAID mode are you running?
One thing you can try - connect the disk to a Windows PC and test it with WD's lifeguard program. Use the "advanced" write zeros test this time - it sometimes picks up issues that the non-destructive test misses.
Also, have you looked at the smart statistics in the logs?
Hi StephenB
Raid Mode: RAID Level X-RAID2, 4 disks
Smart status: says Dead
When I tested the drive orginially I used AOMEI partition assistant from: https://www.disk-partition.com/ and used the quick scan
dlavineway wrote:
When I tested the drive orginially I used AOMEI partition assistant from: https://www.disk-partition.com/ and used the quick scan
Then I suggest retesting with Lifeguard. Do the long non-destructive test first - if it passes, move on to the full write-zeros test. I suspect one of those two tests will fail.
dlavineway wrote:
Smart status: says Dead
You are likely looking at the web ui. You should see a lot more in disk_smart.log (in the log zip). That would include reallocated and current pending sectors, uncorrectable errors, crc error counts, etc.
attaching smart log
Can you post again, showing the "RAW_VALUE" field at the end.
FWIW, you can also copy/paste the stats for disk 1 into your reply. Click on the "insert code" tool and then paste the stats into the pop-up.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
