ReadyNAS 104 - Degraded Volume and Disk Test

[GGlover24]

Hi,

I have a ReadyNAS 104 with four 2TB Drives. My system show degraded and I have started a Disk Test which, I assume, will take between 8-16 hrs to complete.  

1.  I have 4 drives in but only drives 1 and 4 show up (see below).  Is this normal?

2.  Can I remove a drive while that is going on or do I have to wait? 

Thank you for any help you can provide

[JohnCM_S]

Hi GGlover24,

Welcome to the Community!

No, it is not normal that only two disks are detected.

You can remove the drives while the disk test is in progress. You need to power down the NAS first then remove the drives afterward.

You can also download the NAS system logs then provide it to us so we can check why the disks 2 and 3 are not detected. You can do that by uploading the logs to a file-sharing site then send the download link via PM (private message)

Regards,

[GGlover24]

Okay, I sent the message.

[GGlover24]

I am assuming that I have to order new drives as it may be that at least two of the drives has failed and the other two are dying too.

My question is should I drives matching the same Cache, in this case 64 or can I mix-n-match the Cache size?

Thanks

GG

[StephenB]

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@GGlover24 wrote:

My question is should I drives matching the same Cache, in this case 64 or can I mix-n-match the Cache size?

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You can mix-and-match the cache size.

[JohnCM_S]

Hi GGlover24

Do you have a backup of your data?

I checked the kernel.logs and it is flooded with errors from disks 2 and 3.

It will be best if you connect those disks to a PC then run a diagnostic test using the disk manufacturer's tool, then replace the disks that come out bad. Factory reset the NAS then restore from backups.

If the issue still re-occurs, the issue might be on the chassis already.

Regards,

[GGlover24]

Thank you for helping me out, I appreicate it.

Can I just replace those two drives, 2 and 3 or are all the drives bad?

GG

[JohnCM_S]

Hi GGlover24,

Based on the logs, only disks 2 and 3 are having errors. There are no reports of any errors on disks 1 and 4.

Regards,

[JohnCM_S]

Hi GGlover24,

We’d greatly appreciate hearing your feedback letting us know if the information we provided has helped resolve your issue or if you need further assistance.

If your issue is now resolved, we encourage you to mark the appropriate reply as the “Accept as Solution” or post what resolved it and mark it as a solution so others can be confident in benefiting from the solution. 
 
The NETGEAR community looks forward to hearing from you and being a helpful resource in the future!
 
Regards,

[GGlover24]

Hi,

The drive still shows as degraded.

What I've done so far is:

- I've back up the drive.

- I've ordered two new HD; which will be in tomorrow, hopefully.  Gotta love Amazon.

Once I have them I will replace drives 2 and 3 and see if that fixes the problem.

GG

[GGlover24]

Hi,

Okay, So I got the new drives in and only one of them was recognized, #3.  #2 still shows as blank on the webportal, but the number shows up on the drive.

FYI:  The NAS drive no longer show 'degraded' but 'healthy' now.

I am assuming that the bay 2 is damaged some how.

Any advice?

Thanks 

GG

[StephenB]

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@GGlover24 wrote:

Any advice?

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Try powering down and removing all disks (labeling by slot).  Then put the unused new disk into slot 1, and power up the NAS.  If that installs ok, power down and move the disk to slot 2 and boot up again.

That will let you know if the slot is ok or not.