March 27, 2009

Normal aspects, useful for RAID Data Recovery

The storage failure always causes panic; even in case of complete data backup due to the time and effort it requires to restore all information. Such failures cause more damage when organizations face RAID array failure. RAID or Redundant Array of Independent/Inexpensive Disks can encounter various types of failure for its different levels. While some of them can compensate one disk failure, others can do it for multiple. In any such case, RAID Data Recovery service can assist a user to retrieve the lost data.

Few standard RAID levels are RAID 1 that follows mirroring, RAID 0 that follows striping and RAID 5 that follows parity summing. Following are the redundancy description of few RAID levels.

  • If n is referred to number of drives used then RAID 1 offers redundancy of n-1 drives, where n is generally 2.
  • If n-1 is the storage volume of RAID 5, then it permits one redundant drive.
  • If RAID 1+0 contains two-mirrored RAID 0 arrays and each of them has five disks, then the minimum redundancy gets counted as 1 and maximum as 5. This is based on the consideration that the affected drives are of same array.
  • If RAID 5+1 contains two-mirrored RAID 5 arrays and each of them has five disks, then the minimum redundancy comes out as 3 and maximum as 6.
  • In RAID 5+5 array, three independent RAID 5 arrays are considered while each of them has three disks. This allows minimum redundancy as 3 and maximum as 5.

When a RAID array fails, data needs to be recovered using productive recovery measures that involve RAID specific utilities (which depend upon the RAID array or arrays being used) and RAID specific recovery practices (which are almost the same as the normal hard disk recovery). This is the specialized data recovery domain that deals with failed RAID hard drives and is specifically termed as RAID Recovery service. Under the service, failed hard drives are analyzed for cause of crash, repaired (physical repair is also done, if necessary) and data is extracted from the affected drive.

Hard Drive Recovery Service is best carried out under Clean Room environment because of everything under control that may further damage a corrupted hard drive. Such factors may be summarized as dust particles, temperature, humidity, pressure etc. It involves careful recovery procedures plus more technical approach as compared to standard hard drives.

March 9, 2009

Sharing knowledge on RAID Data Recovery

RAID Data Recovery is more like a technique to combine two or more hard drives to achieve performance and fault tolerance. This system is usually employed in servers.

Some of the common steps which may tend to limit the Data Recovery in future are as follows:

1) If you are copying information from an old hard drive onto those being used in you Array, be sure to keep the old disk around for a while. That way, if you discover any fault or errors in you RAID Array, you have still your data safe to work with.

2) Use the best RAID level according to your necessity. Like, if you are just in need of faster reads and basic redundancy, RAID Level 1 is fine in this case.

3) If you are setting up a multi user environment, creating a 3 or 5 drive RAID 5 array may be your best choice. Though, if your requirements are write performance sensitive, there are better alternatives.

4) If you have both options to be applied on Software Based or Hardware based RAID Array, remember Hardware based Array does not need software to boot, have logic with it and are much more fault tolerant. In case of disaster recovery planning go for hardware RAID Array.

5) Use of RAID Array increases the performance and speed. Still there are chances with the files to be disorganized and corrupted. Hence, be sure to run your preferred software for scanning and checking your disks on a regular basis.

One should be resemble with one’s efforts because of huge charges for RAID Data Recovery. Also these are very normal steps which may be followed easily without too much physical movement.

March 3, 2009

Data Recovery is the last tool

At Each Organization every responsible person knows that protecting computer data is important, but how many of them are confident about running the backed up data? May be very few, of course it is true that not only regular back up your computer data as well make it in such a form that it should be avail on the time of demand.

The two largest leading factors in case of data loss are hardware or system malfunctions and human error. Together, almost 75% cases of all data loss are being shared by these reasons. Software corruption, computer viruses and ‘physical’ disasters like fire and water damage make up the rest. There are three major trends in data loss today, representing industry-wide shifts in technology and market behavior. First, technology and advanced users are consuming most of the part of all storage space that has been provided mutually, hence storing less data on smaller storage. Second, Users cleverly using desktop or laptop to store important data. This may be such an important, which in condition of loss can ruined someone. This fact showing too much data dependency on such storage systems. Finally, most of the backup technology and practices are failing to protect data adequately. Among this someone get protected while few worry more, they could not be succeed to backup their important data.

Data recovery is the last tool when everything else, including commercial software, fails. When customers need data recovery, they need it fast. In all these three cases, we can recover all the data within 24 hours or receiving the media. Data recovery is more than pulling strings of bits from mangled disk drives or tangled file systems. Data Recovery Service providers use their much better technical team to recover your lost data. Many of such service providers are equipped with so modern tools which would be never imagined by us. After all their accuracy parameter is only that If the Data has been recovered?