Posts Tagged ‘raid data recovery’

RAID Data Recovery Service

November 27th, 2012 Comments off

RAID provides high performance to us, especially server users but it also brings us with much trouble. For example, we might be troubled to manage RAID partitions such as resizing or moving them. Luckily we could solve the problem quickly and easily with partition manager softwares or by adding hard disk. However, when we encounter data loss due to system crash, virus attack or power failure/surge, it will get serious because it causes greater loss if we recover data from raid at random, therefore, we should get help from professional raid recovery service, which is the first choice because of its quickness and safeness.

Types Of RAID failures:

To summarize, RAID server often fails as a result of the following situations and frequently, a combination of them :

  • Malfunctioned Controller
  • Raid rebuild error or volume reconstruction problem
  • Missing RAID partition
  • Multiple disk failure in off-line state resulting in loss of RAID volume
  • Wrong replacement of good disk element belonging to a working raid volume
  • Power Surge
  • Data Deletion or reformat
  • Virus Attack
  • Loss of RAID configuration settings or system registry
  • Inadvertent reconfiguration of RAID volume
  • Loss of RAID disk access after system or application upgrade

With larger drive capacities the odds of a drive failure during rebuild are not negligible. In that event, the difficulty of extracting data from a failed array must be considered. Only a RAID 1 (mirror) stores all data on each drive in the array. Although it may depend on the controller, some individual drives in a RAID 1 can be read as a single conventional drive; this means a damaged RAID 1 can often be easily recovered if at least one component drive is in working condition. If the damage is more severe, some or all data can often be recovered by professional data recovery specialists. However, other RAID levels (like RAID level 5) present much more formidable obstacles to data recovery.

When looking for a RAID data recovery service, it’s essential to find one with the technical expertise and tools required to restore your data. It’s also important to consider the security measures the company employs to protect your data.

One of the most important features to consider is the company’s clean room or clean benches (Make you own cleanbox cheap). Disks are sensitive. If a technician works on a hard disk in conditions below than the industry standard, it could cause further damage to the hardware. International Organization for Standardization ISO number that rates clean rooms based on the amount of contaminant particles per volume of air.

It’s important to find a data recovery service that has up-to-date software and tools for the best chance of data recovery. The best RAID data repair services will first evaluate your problem without charging you. The company should then supply you with a concrete estimate.

Because your business or personal data is stored on the RAID, it’s important to find a recovery service that will maintain a secure and private environment. This includes a facility that has around-the-clock security monitoring, locked clean rooms and background-tested employees. The best RAID data recovery services also are SSAE 16 certified, which is a third-party standard to measure companies’ privacy and security.

Recovery Capabilities
Since your RAID contains your important data, who better to entrust it to than an expert with years of experience. We found services that have a high success rate at recovering data lost to a variety of calamities. We also looked at how quickly, on average, these companies can repair a RAID.

Help & Support
If you use your RAID in a business setting, having it inoperable for even a day can translate into a large amount of lost revenue. To resolve the problem quickly, it’s important to choose a RAID data recovery service with 24/7 customer support to help you get your RAID to a service location and start the recovery attempt as soon as possible. It’s also essential that the company keep you updated regarding the progress of the recovery.

RAID Data Recovery Service Providers:

  • Secure Data Recovery
  • SalvageData
  • Gillware
  • Data Recovery Services
  • DTI Data
  • DataTech Labs
  • WeRecoverData
  • Kroll Ontrack

Although your RAID may have some serious problems, RAID recovery services are confident that they can assist you in recovering your data. If you need your RAID restored immediately, all of these companies have emergency recovery services that prioritize working on your array until the process is complete. Don’t try to recover data from a RAID on your own. If you make a mistake, you could potentially lose the data you are working to save. Instead, contact a RAID recovery service to restore your invaluable information.

RAID Data Recovery Service in Los Angeles

November 24th, 2012 Comments off

RAIDrecovery 1. Secure Hard Drive RAID Data Recovery Services
Tel: (323) 944-0822
Address: 8271 Melrose Ave Ste 205, Los Angeles, CA

Why Secure RAID Data Recovery Service:

  • Free Data Recovery Diagnostics
  • No Data No Recovery Fee
  • 24/7 Emergency Expert Services

Secure Data Recovery Services professional team in Los Angeles, CA are hard drive data recovery experts in providing advanced disk data recovery solutions. Secure Data Recovery Services of Los Angeles, CA hard drive data recovery specialists provide: fast, friendly, accurate and reliable data recovery service and specialize in: Raid Recovery, Hard Drive Data Recovery, Apple Mac Data Recovery, SQL Data Recovery and Tape Recovery Services.

Customer Reviews:

I gratefully thank you. Secured Data Recovery Services used specialty tools, procedures and security measures at their phenomenal high tech facility to perform a RAID 1 Data Recovery for our firm with outstanding results. Our critical data vanished overnight when a major power surge zapped our RAID back up system and the technicians in the building could not get it working again. The next day it still was not working and we could not access our information. We called Secured Data Recovery Services who came to our rescue. By the end of the day, everything was working fine, all of our data had been returned, the RAID back up system was fixed and life was good again. I gratefully thank you and all the employees thank you also.

2. 24 Hour Data Los Angeles RAID Data Recovery

Tel: (310) 601-7373
Address: 445 South Figueroa, Suite 2700 Los Angeles, CA 90071

3. SalvageData RAID Data Recovery

Tel: (213) 550-4427
Address: 355 South Grand Avenue, Suite 2450 Los Angeles, CA 90071

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RAID Array Failures & Recovery

July 30th, 2011 Comments off

RAID Arrays Failures & RecoveryA hardware RAID implementation requires at minimum a RAID controller. On a desktop system this may be a PCI expansion card, PCI Express expansion card or built into the motherboard. Controllers supporting most types of drives may be used – IDE/ATA, SATA, SCSI, SSA, Fibre Channel, sometimes even a combination. The controller and disks may be in a stand-alone disk enclosure, rather than inside a computer. The enclosure may be directly attached to a computer, or connected via SAN. The controller hardware handles drive management and performs any parity calculations required by the chosen RAID level.

Hardware RAID Failures:

  • Actuator Failure
  • Bad sectors
  • Controller Failure
  • Controller Malfunction
  • Corrupted RAID
  • Lightning, Flood and Fire Damage
  • Damaged Motor
  • Drive physical abuse
  • Hard disk component failure and crashes
  • Hard disk drive component failure
  • Hard drive crashes
  • Hard drive failure
  • Head Crash
  • Intermittent drive failure
  • Media Damage
  • Media surface contamination
  • Multiple drive failure
  • Power Spike
  • Power Supply Burn out or failure
  • RAID controller failure
  • RAID corruption
  • RAID disk failure
  • RAID disk overheat
  • RAID drive incompatibility
  • RAID drive overheat
  • RAID Array failed
  • Vibration damage

Hardware RAID Failures(Human Error):

  • Unintended deletion of files
  • Reformatting of drives / Array
  • Reformatting of partitions
  • Incorrect replacement of media components
  • Accidentally deleted records
  • Mistaken overwritten database files
  • Employee sabotage
  • Lost/Forgotten password
  • Overwritten files
  • Overwritten RAID config files
  • Overwritten RAID settings
  • RAID incorrect setup
  • RAID user error

Software RAID implementations are now provided by many operating systems. Software RAID can be implemented as:

  • layer that abstracts multiple devices, thereby providing a single virtual device (e.g. Linux’s md).
  • a more generic logical volume manager (provided with most server-class operating systems, e.g. Veritas or LVM).
  • component of the file system (e.g. ZFS or Btrfs).

Software RAID Failures:

  • Back up failures
  • Computer virus and worm damage
  • Corrupt files / data
  • Damaged files or folders
  • Directory corruption
  • Firmware corruption
  • Repartition
  • Server registry configuration
  • Missing partitions
  • RAID configuration
  • Reformatting

Software RAID Failures(Application Failure)

  • Applications that are unable to run or load files
  • Corrupted files
  • Corrupted database files
  • Data corrupted
  • Locked databases preventing access
  • Deleted tables

About RAID Data Recovery

The majority of Small-to-Medium Enterprises across the globe have turned to RAID-configured systems for their storage solutions. The most frequently cited reasons for utilizing RAID Arrays in businesses today are the highly fault-tolerant level the solution offers and the cost effectiveness of acquisition and maintenance.

However, if a RAID Array does fail due to component malfunctions (including hard drives and controller cards) or operating and application corruption, it leaves the data unusable and in most cases corrupted.

RAID data recovery is an intricate task since RAID data configurations are often custom-built applications developed by competing manufacturers. Without in-depth knowledge of how RAID arrays are configured at both a hardware, firmware and software level, data recovery attempts will not only fail, but result in further data corruption.

Raid Data Recovery Tips

July 22nd, 2009 Comments off

Raid Data Recovery A large number of users had been made into believing that RAID should not fail, as a result of over emphasis of RAID’s fault tolerance functions or auto rebuilt functions. As a result, up to date backups are seldom performed when the data disaster nightmare unfolds.

RAID may be implemented by hardware or software -based method, differentiated by the presence or absence of a RAID controller, Basically, a number of independent hard disks are connected to form a single and often larger virtual volume. Depending on the RAID configuration, there may be an increase in simultaneous reading and writing of drives along with the fault tolerance feature.

Popular RAID manufacturers such as Mylex, Adaptec, Compaq, HP, IBM etc. promotes the idea of extended data availability and protection when a failed hard disk was detected. In a typical RAID 5 configuration, without even power off, the RAID controller could rebuild the data volume from a hot standby drive or a replacement drive through hot swap. The only time it will fail is when two disks failed simultaneously but such probability is one in a million! As a result, one may tend to believe that RAID can not fail.

The reality: RAID fails

In reality and to the surprise of most, RAID could fail and often fail. See some typical scenario below :

When one hard disk fails, very often, there is no hot standby. As a result, the raid array is running on degraded mode. While waiting for the replacement drive which may take a day or two, the likelihood of next drive failure disabling the raid volume is very high. It is reasonable to assume that all the drives in the array are from the same batch and subject to equal amount of working stress. So if one disk fails, the other is also near imminent failure and it often does.

Most raid server has a single controller. Its failure will result in catastrophic single point of failure.

Frequently, due to power surge, the controller or a number of disk elements could fail resulting in total loss of data. It is also found that a power surge may corrupt the RAID configuration setting of NVRAM in the controller card.

It is also commonly found that while replacing a faulty drive in an attempt to rebuild the raid volume to healthy state, wrong procedures are performed resulting in wrong or partial rebuild, or complete system breakdown upon completion of rebuild.

Not to forget that a RAID configuration with fault tolerance at best only intends to protect the physical failure, but not logical corruption such as system corruption, virus infection, or inadvertent deletion.

Types Of RAID failures

To summarize, RAID server often fails as a result of the following situations and frequently, a combination of them :

  • Malfunctioned Controller
  • Raid rebuild error or volume reconstruction problem
  • Missing RAID partition
  • Multiple disk failure in off-line state resulting in loss of RAID volume
  • Wrong replacement of good disk element belonging to a working raid volume
  • Power Surge
  • Data Deletion or reformat
  • Virus Attack
  • Loss of RAID configuration settings or system registry
  • Inadvertent reconfiguration of RAID volume
  • Loss of RAID disk access after system or application upgrade

RAID Pricing

In general, pricing of raid recovery starts from $1500 onwards and will be more as the situations get more complex.

RAID Recovery Process

Though raid disk arrays offer more redundancy, capacity and performance over standard disk systems, once failed, they are often complex and more difficult to recover.

Normally, we only require the hard disks making up the raid volume in order to recover the lost data.

The process begins by looking at the kinds of failure occurred in a RAID volume. If the RAID server failure is due to multiple failed disks, effort will be spent in getting the failed disks backed to ready state.

The disk image or the low level binary contents of each disk are then copied out. Next, analysis is performed on the disk images. A process of de-stripping will be carried out on each of the extracted disk image upon confirming the RAID types, correct orientation of disk elements forming the RAID volume, the raid strip block size, the associated parity location etc. Different manufacturers may have slightly different RAID settings so additional fine tunings may be needed. Very often, file system repair must also be performed before the data location could be mapped out correctly.

Once the data layout pattern making the RAID logical volume has been identified and confirmed, the critical data will then be uplifted into other disk media. The data integrity is then evaluated to ensure that the data is of acceptable quality before a file list is finally produced for customer review.

Raid Data Recovery Software: Getway Raid Recovery V2.1

Getway Raid Recovery is the professional Raid Data Recovery Software which can extract data from multiple Hard disks in a RAID system, and rebuild the correct data. It can get data back from various types of arrays, including RAID 0, RAID 5, RAID 5E, RAID 5EE and RAID 6.

Server Recovery Tips

July 16th, 2009 Comments off

Server Recovery Data disasters will happen. Accepting that reality is the first step in preparing a comprehensive disaster plan. Time is always against an IT team when a disaster strikes, therefore the details of a disaster plan are critical for success.

Here are some suggestions from Ontrack Data Recovery engineers of what not to do when data disasters occur:

  • In a disaster recovery, never restore data to the server that has lost the data – always restore to a separate server or location.
  • In Microsoft Exchange or SQL failures, never try to repair the original Information Store or database files – work on a copy.
  • In a deleted data situation, turn off the machine immediately. Do not shut down Windows – this will prevent the risk of overwritten data.
  • Use a volume defragmenter regularly.
  • If a drive fails on RAID systems, never replace the failed drive with a drive that was part of a previous RAID system – always zero out the replacement drive before using.
  • If a drive is making unusual mechanical noises, turn it off immediately and get assistance.
  • Have a valid backup before making hardware or software changes.
  • Label the drives with their position in a RAID array.
  • Do not run volume repair utilities on suspected bad drives.
  • Do not run defragmenter utilities on suspected bad drives.
  • In a power loss situation with a RAID array, if the file system looks suspicious, or is unmountable, or the data is inaccessible after power is restored, do not run volume repair utilities.