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
Recently I received a set of drives that were originally in a RAID 5 (stripe set) configuration. These drives were old Seagate forty gigabyte Parallel ATA (PATA) drives. The client explained that they had rebooted the server and when it came up again … [Read more...]
DTI Data Recovery is happy to announce a new full version FREEWARE data recovery software for RAID 1 users. If you are using a RAID 1 which is a mirrored set of hard drives, and the RAID no longer boots, than we can help. More home users are getting … [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...]
We have been discussing the love affair I have with stale drives in a RAID five array and how best to determine if in fact one exists. I explained how the NTFS file system data is normally laid out and the fact that the old and new data, as well as … [Read more...]
 In my last installment I covered two of the three reasons why we do a parity check.  First we want to make sure that we do not have a stale hard drive in the array. Although I did not cover how one determines if in fact a stale hard drive … [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...]