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RN104 - Western Digital WD4004FZWX Compatibility?
Hello! I have a ReadyNAS model RN104 running with (4) Western Digital Black WD4001FAEX 4GB drives. I'm getting a warning that one of the drives is in danger of failing, so I'm in the process of order...
Aspinwall wrote:
The error I started receiving was "Detected increasing pending sector: count [1427] on disk 1 (Internal) [WDC WD4001FAEX-00MJRA0, WD-WCC131348137] 542 times in the past 30 days. This condition often indicates an impending failure. Be prepared to replace this disk to maintain data redundancy."
You should definitely replace the disk.
Aspinwall wrote:
Is it safe to assume that the current generation of WD red/black drives will be compatible with my currrent RN104 setup, even if they are not yet listed on the HDD compatibility list? Or should I seek out previous generation drives that are listed?
The current Blacks should be just as compatible as the older generation, so there's no need to seek out obsolete disks.
But you don't need to match the Blacks, you can replace the failing disk with a Red or a Red Pro, and it will work fine. As Sandshark says, there is little performance benefit with the 7200 rpm drives in your NAS. The Reds will perform about the same, and will use less power/run cooler.
Hello again everyone! About a week and a half ago, I hot swapped out the failing drive. The system did not seem to automatically start to rebuild the array with the new disc, so I restarted the system. For the next week, the status indicator on the unit said that it was restarting; the logs showed that I initiated the restart, but nothing further beyond routine Antivirus def updates. I assumed it was probably rebuilding the array, so I thought I would let things run their course. A few days ago, I went back into the system admin and tried to shut down to see if that would help move things along or give me any indication of what was happening. I've been met with the same result -- ever since, the unit says it is shutting down, but I'm not seeing any indication that anything is happening in the system logs. There is some disc activity evident, and I can still connect and transfer files.
What are my options at this point? Allow it to keep "shutting down" indefinitely? Pull out the replacement drive and see if that changes things at all? Force a power down and restart the system?
The first thing to do is make sure you have a backup of the data.
Was the disk you inserted blank or was it formatted?
The disk was blank -- fresh out of the packaging. Under Volumes in the system admin, the drive is grayed out in the diagram. It shows a full green bar under X-RAID on the right, with options below for "Format" or "Global spare." On hover in the diagram, the disc state says Unknown. The other three bays are blue, RAID (RAID-5).
I do have a backup of the most essential data, and will see if it will let me run a full former server backup now.
Can you select the new drive, and the click on format?
Here is the mdstat.log contents...
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md127 : active raid5 sda3[0] sdc3[2] sdb3[1]
11706499968 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/3] [UUU_]
md0 : active raid1 sda1[0] sdc1[2] sdb1[1]
4192192 blocks super 1.2 [3/3] [UUU]
unused devices: <none>
/dev/md/0:
Version : 1.2
Creation Time : Thu Feb 13 17:24:37 2014
Raid Level : raid1
Array Size : 4192192 (4.00 GiB 4.29 GB)
Used Dev Size : 4192192 (4.00 GiB 4.29 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistentUpdate Time : Sun Apr 22 09:44:38 2018
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0Name : 0e35218c:0 (local to host 0e35218c)
UUID : 3c55ede4:89440f2e:16c397e3:07d9084b
Events : 289708Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
2 8 33 2 active sync /dev/sdc1
/dev/md/data-0:
Version : 1.2
Creation Time : Thu Feb 13 17:24:38 2014
Raid Level : raid5
Array Size : 11706499968 (11164.19 GiB 11987.46 GB)
Used Dev Size : 3902166656 (3721.40 GiB 3995.82 GB)
Raid Devices : 4
Total Devices : 3
Persistence : Superblock is persistentUpdate Time : Sun Apr 22 09:33:17 2018
State : clean, degraded
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0Layout : left-symmetric
Chunk Size : 64KName : 0e35218c:data-0 (local to host 0e35218c)
UUID : 28a10770:072ecc31:fc8fe0ac:b0a6ef4e
Events : 1864Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
2 8 35 2 active sync /dev/sdc3
- 0 0 3 removed
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