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Getting Raid 5 parameters

Posted: Wed Mar 05, 2014 3:42 pm
by charm_quark
Hi guys

Background:
I have been goggling around and could not find what i needed.

My current predicament is that I am recovering a raid 5 disks, whose controller just seemed to have died on me. To make matters worse, my colleague in all his wisdom hoped that by swapping the disk around it would fix the problem. yah...

Problem:
So i have 5 drives that of which i dont know the order. However by manual hex inspection and the assistance of (http://www.r-tt.com/Articles/Finding_RAID_parameters/) i have eliminated disk no5 as the spare.

But i still cannot deduce the rest of the parameters, since this was a secondary drive it does not have a MBR, it is a NTFS. ( using "Boot sector NTFS pattern")

the problem is that by following the above link it say that
What is important: The signature FILE ends with 0, which means that the file record number is not overwritten with a fixup. If it had ended with * (FILE*), we would not have been able to proceed further in our search and would have needed to use another technique.


so I need to ask what is the other technique. since all the "FILE" I have are with an *.

Please advise if you can.

Thanks in advance

PS: I also did use "Reclaime" in the hopes that it would assist. Which it sadly did not.

Re: Getting Raid 5 parameters

Posted: Thu Mar 06, 2014 6:10 am
by Alt
charm_quark wrote: My current predicament is that I am recovering a raid 5 disks, whose controller just seemed to have died on me. To make matters worse, my colleague in all his wisdom hoped that by swapping the disk around it would fix the problem. yah...
What actually did he do with the disk? Only swapping or RAID rebuilding?

Re: Getting Raid 5 parameters

Posted: Thu Mar 06, 2014 10:36 pm
by charm_quark
He only mixed the order of the drives. He did not rebuild raid.

Re: Getting Raid 5 parameters

Posted: Fri Mar 07, 2014 3:42 am
by Alt
If you tried R-Studio's RAID parameter detection unsuccessfully, the only way to help the situation is to go to a professional data recovery specialist, I'm afraid.

Re: Getting Raid 5 parameters

Posted: Fri Mar 07, 2014 10:40 am
by charm_quark
so I need to ask what is the other technique. since all the "FILE" I have are with an *.
i was wondering what the other technique was.

sadly that is what i would have to do.. ( but I don't get to learn anything in the process)

Re: Getting Raid 5 parameters

Posted: Fri Mar 07, 2014 12:44 pm
by Alt
That technique is much more complex and requires a deep knowledge of the NTFS system.

Re: Getting Raid 5 parameters

Posted: Sat Mar 08, 2014 2:37 am
by charm_quark
do you have a link that I can do further reading

Re: Getting Raid 5 parameters

Posted: Mon Mar 10, 2014 12:51 pm
by Alt
Well, I don't know one, I'm afraid.

Re: Getting Raid 5 parameters

Posted: Fri Apr 11, 2014 3:23 pm
by charm_quark
Thanks none the less :)