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Tape Recovery |
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Tape data recovery is the successful retrieval and copying of
data from tape cartridges that have been damaged due to any of the
following:
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Heat and Smoke Damage |
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Water Damage |
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Damage Resulting from Dropping the Cartridge |
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Data Residing after an EOF Mark (Overwritten) |
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Damage Resulting from the Tape Drive |
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Damage as a Result of Aging (Past Warranty) |
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Damage Resulting from Exposure to Extreme Temperatures
or Humidity |
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Internal Cartridge Mechanism Failing |
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As in all data recovery operations, recovering data from tapes is
very specialized. There are primarily two recovery types - Physical
and Logical. |
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Physical Data Recovery is necessary when there is a physical problem
with the media or plastics which prevents the data from being read
normally. 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 been mistakenly subjected to adverse conditions such
as water, mud, or other debris. While these physical issues are often
difficult to handle, recovery of these types can usually be achieved
in the high 98+% range. |
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Logical Data Recovery is typically the most difficult, and consequently,
the most expensive. Recovering files logically includes recovering
the data portion of a tape that was successfully recorded, but for
some unknown reason cannot be read. The recovery of files from this
type of problem often requires multiple passes using proprietary software
that restores the file to the Hard Disk Drive. If hard errors occur,
"dummy blocks" are written in their place, the file fragments
are pieced back together and the logically re-created file is written
to the appropriate output tape. |
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