Data Recovery Resources and RAID How To Guides
Hard drive recovery and data recovery resource center with how to guides for RAID, NAS, file system repair
 Last time I explained the basic premise of a spanned set. I used the example of a clients RAID that contained 3 36 GB SCSI drives. In a standard set each one of the drives would use one partiton for the entire drive and then the set would be … [Read more...]
 Recently it was my displeasure to work on a three drive spanned set for NT 4.0. The set was soft configured so when the boot drive went down, with all of the configuration data for the RAID on it, the RAID would not mount. In addition to that, … [Read more...]
Last time I discussed how to find the RAID data offset for a SNAP OS 4.x RAID handler. To put it briefly it was just a simple matter of finding Cylinder Group zero on the first drive in the array and back tracking 48 sectors. Once the RAID data … [Read more...]
If you are in this business long enough you will see everything, or will you? Two weeks ago I received a SNAP RAID OS 4.x for recovery. I have done a lot of these and I am pretty familiar with the data offsets, how the drives are setup, and where … [Read more...]
Over the years one of the most consistent problems with RAID recovery is the rebuild. I would estimate that nearly 40 percent of the RAIDs that we cannot recover are due exclusively to the fact that a technician executed a rebuild before verifying … [Read more...]
    In one of my articles I tried to define the mathematics of a RAID 5 stripe and how it relates to data recovery. Using the eXclusive ORing truth table we can continue to run the array even when one drive has dropped out of the array. … [Read more...]