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118 Understanding Error States Chapter 4
Understanding Error States
This section describes the difference between the following types of errors:
■ Soft (Recovered) Errors on page 118
■ Partial Availability State on page 120
■ Hard (Unrecovered) Errors on page 126
■ Host Software and Media Errors on page 128
Soft (Recovered) Errors
Soft errors are hardware errors that the library recovered from by retrying the
operation. Though they are often transparent to a user, the time required to
complete the operation may be noticeably longer.
Periodically review the soft error log to detect and track errors before they
become serious. If you see that a component has many soft errors, it might
indicate a library component that is wearing out or will fail in the future. If the
library has a hard error and you are unsure what caused it, you can review
the soft error log to help identify problem areas.
You can also use soft errors to identify the cause of software time-outs. The
backup software on the host computer only allows a designated time for each
operation. If the library takes longer than the backup software allows, it may
be due to the library retrying a failed operation, which will be logged as a
soft error.
Note The date and time stamp will help you resolve errors by
establishing a timeline of when events occurred.
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