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Re: RN104 - Western Digital WD4004FZWX Compatibility?

Aspinwall
Aspirant

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 ordering a replacement drive. 

 

Checking the drive compatibility list, I see WD4003FZEX listed; but the current version of this drive appears to be WD4004FZWX. Just wondering if anyone has experience with the current version of the drive, if I should expect that it will be compatible with my current configuration, etc.

 

Thank you!

Model: RN10400|ReadyNAS 100 Series 4-Bay (Diskless)
Message 1 of 11

Accepted Solutions
StephenB
Guru

Re: RN104 - Western Digital WD4004FZWX Compatibility?


@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.  

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Message 4 of 11

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Sandshark
Sensei

Re: RN104 - Western Digital WD4004FZWX Compatibility?

With a 104, you'll get performance just as fast with the lower-priced Red drive that is also expressly designed for NAS use.  If you really need the 5 year warranty or think the 7200RPM speed is doing you some good, then I'd still suggest the Red Pro over the black.

 

What are the specific errors being reported by SMART?  The NAS decision point for giving the warning is questionable.  If you get a sudden burst of bad sectors (which can happen if you hit a "bad spot" not previously in use), it may give a warning.  But if the growth stops and the total is still smallish, you may be fine.

Message 2 of 11
Aspinwall
Aspirant

Re: RN104 - Western Digital WD4004FZWX Compatibility?

Interesting, thank you for the response. I was not responsible for the initial drive purchase for this setup, so this is the first I've looked closely at the different options. 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 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." 

Message 3 of 11
StephenB
Guru

Re: RN104 - Western Digital WD4004FZWX Compatibility?


@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.  

Message 4 of 11
Aspinwall
Aspirant

Re: RN104 - Western Digital WD4004FZWX Compatibility?

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? 

 

 

 

Model: RN104|ReadyNAS 100 Series
Message 5 of 11
StephenB
Guru

Re: RN104 - Western Digital WD4004FZWX Compatibility?

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?

 

 

Message 6 of 11
Aspinwall
Aspirant

Re: RN104 - Western Digital WD4004FZWX Compatibility?

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. 

Message 7 of 11
StephenB
Guru

Re: RN104 - Western Digital WD4004FZWX Compatibility?

Can you select the new drive, and the click on format?

Message 8 of 11
Aspinwall
Aspirant

Re: RN104 - Western Digital WD4004FZWX Compatibility?

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 persistent

Update Time : Sun Apr 22 09:44:38 2018
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0

Name : 0e35218c:0 (local to host 0e35218c)
UUID : 3c55ede4:89440f2e:16c397e3:07d9084b
Events : 289708

Number 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 persistent

Update Time : Sun Apr 22 09:33:17 2018
State : clean, degraded
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0

Layout : left-symmetric
Chunk Size : 64K

Name : 0e35218c:data-0 (local to host 0e35218c)
UUID : 28a10770:072ecc31:fc8fe0ac:b0a6ef4e
Events : 1864

Number 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

Message 9 of 11
StephenB
Guru

Re: RN104 - Western Digital WD4004FZWX Compatibility?

There are at least things wrong here:

  1. md0 (the OS partition) only has three drives in it (and never had four)
  2. md1 (the swap partition) is completely missing
  3. md127 (the data volume) did have four drives, but now has three (and is therefore degraded).

 

Netgear could probably fix all this remotely (though support would charge).

 

The other option is to back up the data, do a factory reset with all drives in place.  Then after the RAID sync confirm that all three of these partitions exist and include all four disks.  After that, reconfigure the NAS and restore the data from backup.

Message 10 of 11
Aspinwall
Aspirant

Re: RN104 - Western Digital WD4004FZWX Compatibility?

To offer some closure on this -- I decided to force a power down, restart and see what happened. After powering back up, I finally received a message that the fourth drive was synching. A couple days later, it's completed the process and I appear to be fully back up and running. Thanks to everyone who took the time to look at this issue for me!
 
Message 11 of 11
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