Tape Data Recovery

DAT, DLT, DDS & LTO Tape Data Recovery

> We recommend Data Clinic Ltd for all types of data tape recovery and conversion.

Recovering data from tapes is often a complex process that frequently entails the reconstruction and retrieval of data from storage media which is physically damaged.

Recovering data from backup tapesCommon causes of data loss on tapes include tapes that have been accidentally reinitialised and tapes that were written on hardware that has misaligned heads. All of these problems can be recovered, or at least partially recovered using internally developed proprietary software and processes.

Tape damage may result from many different reasons such as –

  • Data Residing after an EOF Mark (Overwritten)
  • Damage Resulting from the Tape Drive
  • Deleted Data
  • Damage Resulting from Dropping the Cartridge
  • Damage as a Result of Aging (Past Warranty)
  • Damage Resulting from Exposure to Extreme Temperatures or Humidity
  • Water Damage – Sprinkler System or Flooded
  • Internal Cartridge Mechanism Failing
  • Permanent Errors Residing Mid File
  • Heat and Smoke Damage

There are mainly two recovery types – Logical and Physical.

This type of recovery is necessary if there’s a physical problem with the media which is preventing the data from being read. generally physical recovery is crucial. This type of recovery may include dealing with issues such as deteriorating magnetic coatings, cracked or broken reels/cartridge shells, creased tape edges, twisted or folded tape, stretched or broken tape, etc. This recovery type also includes capturing the data from media that has mistakenly subjected to adverse conditions such as water, mud, or other debris. Recovery of data from physically damaged tapes is a specialised job that should only be attempted by professional companies with a good working knowledge of the specific type of tape.

Logical recovery can often be the most difficult type of tape recovery. Recovering the data from tapes with logical issues frequently takes an amount of time as the tape has to be read multiple times and it’s output copied to hard drive. If read errors on the tape occur, dummy blocks are written to the hard drive in their place before these file fragments are pieced back together and the reconstructed file completed.