CRC error in RAID - which drive died?

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Hunter_Thompson

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Hi Everyone,

I recently was asked to look at a server that was giving disk {CRC} read
errors. It is setup as a Virtual Machine {VM ware} server.

I was instructed to break the raid (raid-0), perform a low-level format of
the three Sata drives that were in the raid array, and then recreate the
raid, reinstall Windows Server 2003 (R2) and the VM ware images. The
instructions given to me to low-level format the drives should format around
any bad sectors on the hard drive.

I did all of the above, and now we still get the CRC error.

So it seems one of the drives needs to be replaced, but I don't really want
to have to buy 3 new drives when only one is down.

Can anyone recommend a method or application that will allow me to establish
what drive or drives have the problem? Will a chkdisk command do it?

Thanks for any advice, I realise whatever I use will take a fair whack of
time.

Hunter
 
Re: CRC error in RAID - which drive died?

I'd use the disk manufacturer's diagnostic utilities. Usually available from
their web site.

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

"Hunter_Thompson" wrote:
> Hi Everyone,
>
> I recently was asked to look at a server that was giving disk {CRC} read
> errors. It is setup as a Virtual Machine {VM ware} server.
>
> I was instructed to break the raid (raid-0), perform a low-level format of
> the three Sata drives that were in the raid array, and then recreate the
> raid, reinstall Windows Server 2003 (R2) and the VM ware images. The
> instructions given to me to low-level format the drives should format
> around
> any bad sectors on the hard drive.
>
> I did all of the above, and now we still get the CRC error.
>
> So it seems one of the drives needs to be replaced, but I don't really
> want
> to have to buy 3 new drives when only one is down.
>
> Can anyone recommend a method or application that will allow me to
> establish
> what drive or drives have the problem? Will a chkdisk command do it?
>
> Thanks for any advice, I realise whatever I use will take a fair whack of
> time.
>
> Hunter
 
Re: CRC error in RAID - which drive died?

Found a SeaGate Tool called SeaTool.

OK so the RAID manager has no option to check for errors or anything like
that - it has Create Raid, Delete Raid, Repair Raid1, Low-Level Format,
Resolve Conflicts (cant find any) and Logical Drive Info.

The SeaTools utility says no hard drives found. Maybe it wont see a Raid
array... might try breaking the Raid and running SeaTools again.
 
Re: CRC error in RAID - which drive died?

Did you download and run the 'Dos' version?

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

"Hunter_Thompson" wrote:
> Found a SeaGate Tool called SeaTool.
>
> OK so the RAID manager has no option to check for errors or anything like
> that - it has Create Raid, Delete Raid, Repair Raid1, Low-Level Format,
> Resolve Conflicts (cant find any) and Logical Drive Info.
>
> The SeaTools utility says no hard drives found. Maybe it wont see a Raid
> array... might try breaking the Raid and running SeaTools again.
>
 
Re: CRC error in RAID - which drive died?

Yeah, using the DOS version on a floppy.

Looked at the motherboard, and the 3 SATA drives were plugged into SATA
ports 3, 4 and 5. Hmmm... I unplugged them all and plugged one into SATA port
1.

Now SeaTools sees this drive. I am now erasing, and will then do
diagnostics. I have 3 drives to do this to so it may take a while!

Will post result.

Hunter
 
Re: CRC error in RAID - which drive died?

Ok

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

"Hunter_Thompson" wrote:
> Yeah, using the DOS version on a floppy.
>
> Looked at the motherboard, and the 3 SATA drives were plugged into SATA
> ports 3, 4 and 5. Hmmm... I unplugged them all and plugged one into SATA
> port
> 1.
>
> Now SeaTools sees this drive. I am now erasing, and will then do
> diagnostics. I have 3 drives to do this to so it may take a while!
>
> Will post result.
>
> Hunter
 
Re: CRC error in RAID - which drive died?

There were 3 drives in a Raid0 array.

Drive 0, Drive 1, Drive 2

Drive 1 was the culprit - SeaTools has identified it as the dodgy disk.

Thanks for all the advice.

Hunter
 
Re: CRC error in RAID - which drive died?

You're welcome. Good the hear it's sorted.

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

"Hunter_Thompson" wrote:
> There were 3 drives in a Raid0 array.
>
> Drive 0, Drive 1, Drive 2
>
> Drive 1 was the culprit - SeaTools has identified it as the dodgy disk.
>
> Thanks for all the advice.
>
> Hunter
 
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