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RAID 10 drive failure

Last response: in Storage
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July 31, 2013 6:53:53 AM

Hi,
Just a quick brief on my setup:
intel S5520HCT motherboard
intel AXXROMBSASMR RAID controller
4 x WD SATA HDD 1TB (configured in RAID10)
Case with hot-swap bay
VMWare vSphere 5.1 free version

So i was planning to update the firmware of the RAID controller (which I just purchased two weeks ago) and while I was in the RAID console or something, I noticed that my array had 1 failing disk. but the system is runnng fine.

I know this sounds like a beginner question, but I just want to make sure:
Do I just replace the failed drive with a new one while system is running? should I turn it off first?
after replacing the drive... what now? will it magically work? or do I need to rebuild the drive?

And the thing is, my setup is fairly new. I assembled it two months ago and was hoping to work with the embedded RAID controller. But it turned out to be terrible. So I ordered the RAID controller. Is it possible that the disk failed already? can I test and only rebuild the failing one?

Thnaks

More about : raid drive failure

a b G Storage
a b V Motherboard
July 31, 2013 7:27:14 AM

you need to replace the drive with the system off then go into the raid controllers options at boot and tell it to rebuild the array on the new disk.
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a b G Storage
a b å Intel
a c 95 V Motherboard
July 31, 2013 8:02:33 AM

Run WD diagnostics, available from their website, if drive new, it will give error codes for you to RMA.
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a c 385 G Storage
a b V Motherboard
July 31, 2013 8:21:43 AM

das_stig said:
Run WD diagnostics, available from their website, if drive new, it will give error codes for you to RMA.


Most software of this type can't diagnose a drive while it's part of an array. The drive will need removed from the array in order to run diagnostics.
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August 3, 2013 3:08:42 PM

Hawkeye22 said:
das_stig said:
Run WD diagnostics, available from their website, if drive new, it will give error codes for you to RMA.


Most software of this type can't diagnose a drive while it's part of an array. The drive will need removed from the array in order to run diagnostics.


Correct. When I ran the diagnostics, it only showed one disk, which is my RAID10 array.

And the weird part is, the diag didn't show any errors?? So what to do next?
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a c 385 G Storage
a b V Motherboard
August 5, 2013 5:54:59 AM

Exactly what it sounds like. Back up all data, tear down the array, test drives individually, rebuild the array, and restore data. There's a reason why home users shouldn't use RAID unless absolutely needed.
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August 5, 2013 1:12:45 PM

Hawkeye22 said:
Exactly what it sounds like. Back up all data, tear down the array, test drives individually, rebuild the array, and restore data. There's a reason why home users shouldn't use RAID unless absolutely needed.


This is not for home use. This is a server for a small business that I am building. Its not on production yet. It runs VMWare ESXi hypervisor with the following VMs

Active Directory
Nagios Monitoring
Accounting system
Wiki

Unfortunately, backing up, rebuilding, and restoring data is very time consuming and non trivial. It will be much easier and faster to just purchase another disk and replace the suspect one. I do have alot of knowledge on VMWare, and the systems that run on it. However not much on RAID. Thats why my original questions was how do I replace the failing disk if its in an array
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a c 920 G Storage
a b å Intel
a c 91 V Motherboard
August 5, 2013 3:52:58 PM

It all depends on how you set it up, since you are building a server for a small business I find it sad that you don't know what you're doing. I highly suggest you read the manual. In there are gems like: For auto- rebuild to work, it needed to be enabled when you created the virtual drive.

Since you didn't know a drive had failed how do you expect your customer to? Where are the external indicators? Apparently these are not in hot swap bays, so how are they supposed to handle a failed disk when you don't even know? You were going to actually deliver this like this, with no way to know of a failed drive until the entire array was dead and all their data lost... Let me guess, you have 4 WD green drives in it too...

Sorry to flame on you but you sir need a wake up call.
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a c 385 G Storage
a b V Motherboard
August 6, 2013 5:18:16 AM

Once you have determined which drive is dead, you can replace it, then do as mualler07 said. If you have array management software, you should also be able to start the rebuild there.
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a b å Intel
a c 324 V Motherboard
August 6, 2013 5:59:54 AM

When using a desktop edition hard drive connected to a RAID controller, the drive may not work correctly. What WD drives are used in the 4 x WD SATA HDD 1TB (configured in RAID10) array?


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