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Chapter 6 HPSS Configuration
HPSS Installation Guide September 2002 321
Release 4.5, Revision 2
Retry Stage Failures from
Secondary Copy
When this flag is turned
on, HPSS will
automatically retry a failed
stage from the primary
copy if a valid secondary
copy exists. For this to
work properly, the COS
must be set up with at least
2 copies and a valid
second copy must have
been created during HPSS
migration processing.
ON,
OFF
Same as last
configured
COS.
R / W Operations The operations supported
for this COS.
READ,
WRITE,
APPEND
Same as last
configured
COS.
Class Characteristics. The fields below describe the characteristics of a COS.
Access Frequency The frequency, on average,
for accessing files in this
COS.
Hourly,
Daily,
Weekly,
Monthly,
Archive
Daily
Optimum Access Size The suggested number of
bytes that should be
written at one time for
maximum efficiency. Not
currently used.
Any positive 32-bit integer value. Same as last
configured
COS.
Average Latency The average time (in
seconds) that elapses
between the time a transfer
request is accepted for
processing and the time
the data transfer begins.
Any positive 32-bit integer value. Same as last
configured
COS.
Transfer Rate The average throughput
(in KB per second) that
can be transferred using
this COS.
Any positive 32-bit integer value. Same as last
configured
COS.
Table 6-14 Class of Service Configuration Variables (Continued)
Display Field Name Description Acceptable Values
Default
Value