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Answer Posted / rakesh mishra (ranchi)
Many computer-based systems must recover from faults and
resume operation within a pre-specified time. In some
cases, a system may be fault tolerant; that is, processing
faults must not cause overall system function to cease. In
other cases, a system failure must be corrected within a
specified period or severe economic damage will occur.
Recovery testing is a system test that forces the software
to fail in a variety of ways and verifies that recovery is
properly performed. If the recovery is automated (performed
by system itself), re-initialization mechanisms, data
recovery, and restart are each evaluated for correctness.
If the recovery requires human intervention, the mean time
to repair is evaluated to determine whether it is within
acceptable limits.
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