Data Recovery Resources SNAP EXCHANGE and RAID How To Guides
Hard drive recovery data recovery resource center with how to guides for windows RAID Snap server file system repair NTFS partition recovery tools tips and tricks to recover data
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...]
The next machine with a bad hard drive was my server. This server has been running as a server in our home for about 8 years. HAH! Now that is not to say that we haven’t done upgrades, because we have. We have always kept the “data” area of the … [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...]
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...]
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...]
The function set for the inaugural offering of RAID Diagnostic Toolkit is very basic. This post will explain how to choose a set of 'streams' to build a 'RAID set'. Initially the software does not have any options for stripe size, raid type, meta … [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...]
We have been getting a lot of calls about RAID data recovery lately. As more and more computer manufacturers utilize RAID systems in home computers, RAID failures rise exponentially. It used to be that RAID data recovery calls that we received were … [Read more...]
The first rule of RAID data recovery is "due no harm". In fact that is DTI's rule on all types of hard drive recovery, from laptop disk repair to multi drive arrays. Work should never be performed directly on media that stored the data. Any type of … [Read more...]
A RAID system comprises of 2 or more hard disks that are combined to provide the storage capacity of both drives across 1 volume. The exception to this is RAID 1 which is a mirror. In other words the second drive is a duplicate of the first. If one … [Read more...]
DTI Data Recovery is one of the few companies that actually performs RAID recovery in their own labs. RAID data recovery is the most advanced type of data restoration there is. Not only do the hard drives need to be repaired, but the underlying file … [Read more...]
DTI Data Recovery is one of the few companies in the US that are qualified to perform RAID data recovery. One of the hardest types of recovery, a RAID Array Restoration involves many different levels. A lot depends on the type of RAID, is it software … [Read more...]
DTI Data specializes in server hard drive recovery. In the past only large companies used RAID configurations for storage in their servers. Nowadays even home users have RAID setups in their personal computers, so small companies are also more … [Read more...]
Novell NSS: Parsing the LEAF About three years ago I received a RAID that had a Novell OS on it. The RAID was close to 2 TB and consequently was sporting a very hefty NSS file system. There were several problems with this recovery, but after … [Read more...]
Data Recovery: A partnership for success With close to 30 years of software design, programming, and implementation I have seen thousands of clients where their data has been, lost, drowned, burned, erased, deleted, and maliciously destroyed. In all … [Read more...]
Definition: RAID stands for Redundant Array of Independent (or Inexpensive) Disks. It involves the configuration (setting up) of two or more hard disk drives in combination for fault tolerance and performance. RAID disk drives originally were only … [Read more...]