nerdexam
LPI

201-450 · Question #63

Why shouldn't you use the options -z and -j when using tar with a magnetic tape backup?

The correct answer is A. In case of damaged tape uncompressed tar archives may allow partial recovery of the backup. See the full explanation below for the reasoning.

Advanced Storage Device Administration

Question

Why shouldn't you use the options -z and -j when using tar with a magnetic tape backup?

Options

  • AIn case of damaged tape uncompressed tar archives may allow partial recovery of the backup
  • BStandard Linux compression software and hardware compresion in the tape drive will cause bigger
  • CStandard Linux compression software won't be able to write to sequential tape media.
  • DBackup and restore performance will be better if we don't introduce the compression delay into the
  • EThe tape drive hardware-based compression achieves higher compression rates than either gzip or

How the community answered

(38 responses)
  • A
    82% (31)
  • C
    3% (1)
  • D
    11% (4)
  • E
    5% (2)

Topics

#tar#tape backup#compression#partial recovery

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