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ici_lemmy
 Post subject: [URGENT] parity in HP RAID 6 Case
PostPosted: August 28th, 2014, 14:21 
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Joined: May 3rd, 2011, 9:52
Posts: 177
Location: France
Hello RAID gurus,

I have a case with an HP RAID 6.
There was 5 working drives and 4 defective drives. I was able to repair two of the defective drives.
So now I have 7 working drives out of 9. It should be enough to recover the data.

I was able to verify the type of RAID and find the order, the first drive, the block size and the delay.
So I have almost everything. My problem is with the parities. The first one is a simple XOR, just like in RAID 5 but I don't know (and can't find) how the second one is calculated and it doesn't seems to be Reed Solomon, because when I try that in R-Studio, it doesn't work as expected.

So, does someone knows (and/or is willing to give me a hint) how the second parity is calculated in HP RAID 6 ?

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Lemmy
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Dmitri
 Post subject: HP RAID 6 recovery
PostPosted: August 28th, 2014, 18:15 
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Joined: February 8th, 2014, 8:08
Posts: 456
Location: Eastern Europe /recovering worldwide/
ici_lemmy wrote:
I have a case with an HP RAID 6.
There was 5 working drives and 4 defective drives...
Please check your PM.

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• Remote RAID, NAS, SAN, VMware, DVR (CCTV), flash and tape recovery. Data recovery support.
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microsoftengineer
 Post subject: Re: [URGENT] parity in HP RAID 6 Case
PostPosted: August 29th, 2014, 5:31 
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Joined: January 4th, 2010, 5:12
Posts: 215
Location: Dubai U.A.E
Dr.Kiev is the Best person to Contact about ALL Types of Raid Cases ...
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ici_lemmy
 Post subject: Re: [URGENT] parity in HP RAID 6 Case
PostPosted: August 29th, 2014, 15:55 
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Joined: May 3rd, 2011, 9:52
Posts: 177
Location: France
Case close.
Thank for your PM...

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Lemmy
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hhddrec
 Post subject: Re: [URGENT] parity in HP RAID 6 Case
PostPosted: September 1st, 2014, 8:46 
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Joined: August 13th, 2008, 13:10
Posts: 811
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can you report us recipe?
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ici_lemmy
 Post subject: Re: [URGENT] parity in HP RAID 6 Case
PostPosted: September 8th, 2014, 6:01 
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Joined: May 3rd, 2011, 9:52
Posts: 177
Location: France
hhddrec wrote:
can you report us recipe?

The controler was not dead... And *it* knows how to rebuild with 2 missing disks

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Lemmy
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hhddrec
 Post subject: Re: [URGENT] parity in HP RAID 6 Case
PostPosted: September 8th, 2014, 8:14 
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Joined: August 13th, 2008, 13:10
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thanks Ici Lemmy
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