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Forum Discussion
New drive - Volume degraded
Hi,
I have had a RN102 with a 3TB Segate drive working happily for several years. I recently added a 3TB WD Red drive, so that I have redundancy protection. ON power up, it starts to synchronise but will always say 'Volume Degraded' at the end!
I have swapped the drives around, to prove that both bays are OK, but the system doen't seem to like the new WD drive.
I have down loaded the log, but I'm not sure what to look for.
Can anyone help point me in the right direction?
Thanks.
Here's an extract from the volume.log file:
==============================================
Disks
==============================================
Disk sda:
HostID: 0e341a47
Flags: 0x0
Size: 5860533168 (2794 GB)
Free: 4054
Controller 0
Channel: 0
Model: WDC WD30EFRX-68EUZN0
Serial: WD-WCC4N1TYVKTF
Firmware: 82.00A82
RPM: 5400
SMART data
Reallocated Sectors: 0
Reallocation Events: 0
Spin Retry Count: 0
Current Pending Sector Count: 0
Uncorrectable Sector Count: 0
Temperature: 29
Start/Stop Count: 194
Power-On Hours: 134
Power Cycle Count: 6
Load Cycle Count: 192
Latest Self Test: Passed
Disk sdb:
HostID: 0e341a47
Flags: 0x0
Size: 5860533168 (2794 GB)
Free: 4054
Controller 0
Channel: 1
Model: ST3000DM001-9YN166
Serial: W1F1YZYN
Firmware: HP16
RPM: 7200
SMART data
Reallocated Sectors: 20944
Reallocation Events: 20944
Spin Retry Count: 0
End-to-End Errors: 0
Command Timeouts: 104
Current Pending Sector Count: 1176
Uncorrectable Sector Count: 0
Temperature: 34
Start/Stop Count: 494
Power-On Hours: 21436
Power Cycle Count: 351
Load Cycle Count: 1035
Latest Self Test: Passed
5 Replies
Replies have been turned off for this discussion
you have swapped the drives around and that would damage the original volume/array.
now u need to have a factory reset with 2 drives in bay1 and 2. they will resync in raid 1 and you copy data to the new array from your backup.
That is IF he has a backup! Not sure why you would have a NAS for awhile with a single HDD. You have zero protection. What's the point? Glad to see that he is finally adding that second HDD, which gives you Raid 1. Which is bascially a clone/Mirrored of 1 HDD to the other HDD.
I have 4 3TB WD Red drives and 2 3TB Seagate NAS drives in my 516 NAS. In fact the 4 WD RED's used to be in my old ReadyNAS NV+ V2 NAS. It doens't seem to me to be a good idea to pull out both HDD and swap in some type of failed conndition. When you install a new HDD, it has to format and index the thing which can take HOURS. I don't know how old your Orignal HDD is. I've had issues with Seagate drives. Not holding up and lasting. When the NAS has to copy and rebuild, it puts extra stress on the drives still in the system. So you may be getting this error, but it's not from the new HDD, but the orignal HDD.
Maybe some of this can help
https://community.netgear.com/t5/Using-your-ReadyNAS/Data-Degraded-but-Volumes-are-fine/td-p/1023459
https://community.netgear.com/t5/Using-your-ReadyNAS/Volume-Data-degraded-error/td-p/1207091
Thanks for the reply, cpu8088.
Before I do something silly and loose any data, I need to:
- Backup, by existing Shares using the 'Backup' tab.
- Reset factory defaults - How-do-I-access-the-boot-menu-on-my-ReadyNAS
- Alloy to resync
- Restore data from backup
Is that right?
Thanks.
Asto wrote:
Channel: 1
Model: ST3000DM001-9YN166
Serial: W1F1YZYN
...
Current Pending Sector Count: 1176The disk swap isn't the problem. The Seagate disk is failing (1176 bad sectors so far).
So
- make a backup right away
- replace the Seagate DM drive
- Do a factory reset with the two new drives
- restore data from the backup.
YA, that was one of my guesses. A bad Seagate drive. They just don't tend to last. Also when you pop in a new drive and the NAS has to do a rebuild, that puts extra stress on the other HDD(s). That tends to be the time a HDD is going to fail on you. Which is one reason why you should have a backup. At least the 3TB drives are reasonably priced. Though HDD prices arn't dropping down fast enough.
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