DELL RAID RECOVERY

DELL RAID RECOVERY

0800 008 6638

PowerEdge

Rack  and Tower Servers

call back request

DELL RAID Server Emergency Recovery. 

Datlabs are expert in the Emergency repair, rebuild and recovery of data from all variants of  DELL RAID configured Rack and Tower  Series Servers.  We support small business, large organisations and hosting service providers in getting DELL Server equipment up and running.

  DELL  RAID Technical Support

Datlabs Emergency Technical Support Team is available 24 x 7.  Call our  Emergency Service RAID Help Line on 0800 008 6638 or leave a call back request for Emergency RAID support and we will be back to you ASAP.  We have offices throughout the country at locations in London, Manchester, Birmingham,  Liverpool,  Leeds and Glasgow. We also maintain points of presence in other major city locations.

  DELL  Power Edge  RAID Recovery.

We successfully recover Dell Power Edge RAID Servers. Dell PowerEdge RAID servers are configured using PERC in association with Powervault DAS , typically MD1000, MD3000 , AX4/5, and use SATA, and SAS hard drive storage interfaces. Occasionally our technical team are faced with SCSI legacy systems.

DELL Power Edge RAID 1
with
2 failed drives.

Dell Power Edge Recovery

Dell PowerEdge R710 RAID 1 (PERC 6/i) Recovery/Restoration with amber blinking LED’s on HDD’s 0 and 2.

Dell Power Edge Data Recovery Typical Fault Conditions.

Dell PERC controllers are renowned for quickly taking “failed drives” offline.  Just a blip  involving  S.M.A.R.T. error will result in a drive being removed from the array.  These circumstances occur at the same time on matched drives and result in a  degraded System that may not be able to auto rebuild.  Whilst troublesome for the organisation the system is invariably recoverable  The drives that have dropped out of the array  are usually readable using Datlabs  specialist hardware and applications.

Datlabs RAID team will image all hard drive’s / volumes in the the array and verify their accuracy. This preserves the original array and its stored data . Our engineers will then determine the  health and precise order and configuration of  the volumes within the array and in this process remedy any faults affecting the failed hard drives.,   The array can then be rebuilt and its data transferred to return media or the clone array prepared for replacement.

If you are in need of  a Professional RAID Data Recovery Service.

If you’re looking for professional data recovery from a failed Dell RAID  then Datlabs have the experience and facilities to rebuild and retrieve your data.

Transport + Drop-In

For  DELL RAID Servers  contact our Emergency help line  0800 008 6638  24×7.  Our   Emergency RAID  technical support is centralized at our Manchester Office and we support throughout the UK.  A registered  company since 2002 we comply with the GDPR and we are certificated with the ICO.  When recovering data from RAID Arrays  our success rates are second to none !

DELL RAID Service

DELL RAID
RECOVERY
SUCCESS

DELL RAID Recovery Success

Local City Offices

Datlabs Office Nearby me

Typical DELL Power Edge RAID Servers Rebuilt and Recovered by Datlabs:

DELL R440 Typical Drive Options
2 x M.2 SSD
4 x 3.5″ SAS, SATA, NL-SAS, SSD
8 x 2.5″ SAS, SATA, NL-SAS, SSD
10 x 2.5″ SAS, SATA, NL-SAS, SSD
10 x 2.5″ SAS, SATA, NL-SAS, SSD + 4 NVMe SSD5

DELL T640 Typical Drive Options
8 or 18 x 3.5” SAS/SATA (HDD/SSD) max 216TB
16 x 2.5” SAS/SATA (HDD/SSD) max 61TB
32 x 2.5” SAS/SATA (HDD/SSD) max 122TB
16 x 2.5 SAS/SATA (HDD/SSD) + 8x NVMe SSD max 112TB

DELL Poweredge RAID Failure.

Datlabs RAID Rapid Response Team are available 24 x 7  and have unparalleled experience in DELL PowerEdge RAID configured Servers with success rates second to non .

Typically we have rebuilt and recovered:

  • Failure of one or more hard drives
  • Server hardware failure
  • Faulty PERC controllers
  • Incorrectly Rebuilt Arrays
  • Systems Reconfigured in error.

When a drive fails, all logical drives that are in the same array are affected. Each logical drive in an array might be using a different fault-tolerance method, so each logical drive can be affected differently.

  • RAID 0 configurations do not tolerate drive failure. If any physical drive in the array fails, all RAID 0 logical drives in the same array also fail.
  • RAID 1 and RAID 10 configurations tolerate multiple drive failures if no failed drives are mirrored to one another.
  • RAID 5 configurations tolerate one drive failure.
  • RAID 50 configurations tolerate one failed drive in each parity group.
  • RAID 6 configurations tolerate two failed drives at a given time.
  • RAID 60 configurations tolerate two failed drives in each parity group.
  • RAID 1 (ADM) and RAID 10 (ADM) configurations.

Before replacing drives ensure that the array has a current valid backup.

Confirm that the replacement drive is of the same type as the degraded drive (either SAS or SATA and either hard drive or solid state drive) also that the replacement drive has a capacity equal to or larger than the capacity of the smallest drive in the array. The controller will immediately fails if a drive is introduced that has insufficient capacity.

Systems with External Data Storage.

Ensure that the server is the first unit to be powered down and the last unit to be powered up. Taking this precaution ensures that the system does not, erroneously, mark the drives as failed when the server is powered up.

Replacing RAID Hard Disk Drives.

The most common reason for replacing a drive is that it has failed. However, another reason is to enhance the storage capacity of the system.

In fault-tolerant configuration, hot-plug hard drives can be replaced when server is ON, but in case of a Non-hot-plug hard drive, it should be replaced when server is OFF.

For systems that support hot-pluggable drives, if user replace a failed drive that belongs to a fault-tolerant configuration while the system power is on, all drive activity in the array pauses for 1 or 2 seconds while the new drive is initializing. When the drive is ready, Data Recovery to the replacement drive begins automatically. For systems that support non-hot-pluggable drives, if you replace a drive belonging to a fault-tolerant configuration while the system power is off, a POST message appears when the system is next powered up. This message prompts user to press the F1 key to start automatic Data Recovery.

If user do not enable automatic data recovery, the logical volume remains in a ready-to-recover condition and the same POST message appears whenever the system is restarted. Automatic data recovery (rebuild) When user replace a drive in an array, the controller uses the fault-tolerance information on the remaining drives in the array to reconstruct the missing data (the data that was originally on the replaced drive) and then write the data to the replacement drive. This process is called automatic Data Recovery or Rebuild.

Fault Tolerance.

If fault tolerance is compromised, the controller cannot reconstruct the data, and the data is likely to be lost permanently without the services of a professional data recovery provider.

Time Required For A Rebuild.

The time required for a rebuild depends on several factors:

  • The priority that the rebuild is given over normal I/O operations
  • The amount of I/O activity during the rebuild operation.
  • The average bandwidth capability (MBps) of the drives.
  • The availability of drive cache.
  • The brand, model, and age of the drives.
  • The amount of unused capacity on the drives.
  • For RAID 5 and RAID 6, the number of drives in the array.
  • The strip size of the logical volume.
  • Firmware versions of the Smart Array Controller and Hard Disk Drive.

A System could be unprotected against hard disk drive failure for an extended period during rebuild and upgrade. When possible, perform rebuild during periods of low system utilization.

RAID 0 Recovery Service

RAID 1 Recovery Service

RAID 5 Recovery Service