
Drive Reliability Factors
72 Quantum|ATL PowerStor L200 Series Library User’s Guide
Drive Reliability Factors 1
The mean interval between failures of the library unit (less the tape
drives) is:
• 185,000 power-on hours (POH) mean time between failures
(MTBF)
or
• 1,000,000 mean load/unload cycles between failures (MCBF),
where a failure is charged against one or the other, but not both
Quantum|ATL does not warrant that predicted mean interval
between failures is representative of any particular library
installed for customer use. Actual figures vary from library to
library.
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