Re: HELP - data recovery tool
From: Mike Brearley (mike_brearleyDONTDOIT_at_NOSPAMhotmail.com)
Date: 07/28/04
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Date: Wed, 28 Jul 2004 13:53:56 -0400
The drives weren't dead, they just fell out of the array for some reason. I
purchased the full version of restorer2000. The demo version is limited to
64k, so it's just a coinsidence that the chunk size is the same. I didn't
initialize the array or format it, I just activated the partition after
re-creating the array with the promise array management (bios level). I'm
currently in the process of recovering files ranging up to 2.5Gb and they
are not corrupt.
I'm thinking of contacting Promise and asking for a refund for the amount it
cost me to purchase the recovery software seeing as there was no reason for
the drives to be removed from the array and marked as free all by themselves
(and yes, I's 100% sure that no one went into the system and did that
themselves.)
-- Posted 'as is'. If there are any spelling and/or grammar mistakes, they were a direct result of my fingers and brain not being synchronized or my lack of caffeine. Mike Brearley "Julio McTavish" <juliomct@spammenot.org> wrote in message news:eK%23pMDLdEHA.1764@TK2MSFTNGP10.phx.gbl... > Hi Mike, > > Here's the bad news: > > Once you rebuild the array it kills the files by overwritting, so they are > pretty much gone. RAID-5s put alternating 64K file chunks on each drive to > spread the files out (that's how it works). That's why most files under 64K > can be restored. Anything else you pull with data recovery software will be > corrupted beyond use (every other 64K chunk will be from a different file, > or just empty). > > We had a similar situation with a client on a SCSI RAID 5, two drives died > and they "rebuilt" the array to 'fix' it. We tried lots of software (there > are no free data recovery tools that we could find, GetDataBack is sweet tho > and isn't too badly priced) and eventually sent it to ActionFront Recovery > (these guys are amazing at getting data back) and they said the same thing - > 'it's toast, use your tapes'. Hopefully your external media backup > procedures were backing up Exchange sepecifically; our client's were not, > they lost their Exchange data completely because of that. > > If you ever lose more than one drive in a RAID (in the future) immediatly > turn the server off, remove the drives and send them to a data recovery > specialist, that's about your best option. > > Good luck. > > > -- > - > "Mike Brearley" <mike_brearleyDONTDOIT@NOSPAMhotmail.com> wrote in message > news:u1$hv1JdEHA.3732@TK2MSFTNGP11.phx.gbl... > > Are there any free data recovery tools? I have a promise sata raid card > and > > for whatever reason my 4 drive raid 5 array lost all but one disk. The > > others were showing as free drives. I had to delete the array and > re-create > > it. I've ran a demo version of restorer2000 and was able to get all files > > that are less than 64k in size, but I need the other files asap so I can > get > > my exchange server back up and running. > > > > -- > > Posted 'as is'. If there are any spelling and/or grammar mistakes, they > > were a direct result of my fingers and brain not being synchronized or my > > lack of caffeine. > > > > Mike Brearley > > > > > >
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