RAID5 Failed in Sentinel RX 4100

WD Legacy Products Sentinel Products
1

Dear All,

Please feel free to move this thread to its proper category destination as I couldn’t find a category for “NAS - Sentinel RX 4000 series”.

Kindly I need your help to solve this issue. Two drives have failed in the RAID5 and the system is down. Please guide me to a step-by-step documentation to bring the system back online. I bought two new drives but I don’t know which drives have failed. How to locate the failed drives in the array if the system cannot boot to let me know this?

Sorry but I come from a heavy networking (not servers) background and my server colleague took a week off.

Appreciate your help and timely response.

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Hello Community ? Anybody ?!!!

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Hello,

To identify the failed units, you can open the casing with the keys and it should give you a red light on the failed unit or you can try a recovery and it will show you the bad drives as well.

If you are going to try a recovery, see page 66 of the user manual.

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Two drives down means the data is lost. It is hard to find replacement drives that work. There is a download for a drive enabler, but I think it has to be run on a working system

You may need to contact WD for a recovery ISO that is not picky about the drives

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Thanks ERmorel, will try the recovery. I don’t see any red light on of the drive. I see red light only in the general failure lamp in the appliance.

Oh and BTW, this is an Admin and Maint. guide. I have this guide and it doesn’t mention any RAID5 recovery steps.

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Gramps, I am now scared. What do you mean its hard to find a replacement? Data is not an issue, my colleague took backups off site on external SSD NAS drives. I ordered the same SATA HDD model that came with the appliance. If the HDD is the same model, why should I worry if the ISO is or isn’t picky?

Can you please clarify more?

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here is a link to compatible drives. Even the firmware version (the second set off characters/numbers) must match. That is the hard part #1 cause there are none left in the wild, #2 a vendor has no clue what you are talking about
http://support.wdc.com/KnowledgeBase/answer.aspx?ID=9443#panam

Click on downloads and you will see a drive enabler that does away with the drive whitelist
https://support.wdc.com/product.aspx?ID=1601&lang=en

But it is an .exe so it has to be executed on a running system. I suppose you could do Diskpart > clean on your 2 good original drives. Do a recovery, run the enabler, then add your new drives one at a time

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On page 66 as stated it tells you how to recover the box. Raid is automatic, so you will follow those steps to be able to use your box again.

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Alright, will see what I can do. :slight_smile:

Thanks for your help

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ERmorel,

Sorry for the late reply. I was in a vacation

Okay, I couldn’t identify the failed drive because there is no red light on it. Instead, a red light appears in the hazardous icon lamp but not in the drive itself. I want to identify the failed drive in order to replace it.

Kindly advise.