SMF 21 records contain byte counts, compressed and uncompressed,
read and written, with ONLY the dismount time of the tape.

But MXG users can use the MXGTMNT Tape Mount Monitor, which
not only generates an SMF record for each mount of each volser,
with mount start and mount satisfied time stamps, to measure
waiting to mount time, and provides JOB, READTIME, JESNR,
etc in an SMF record, it also captures all SYSLOG mount-related
events into SMF.  These three sources, MXGTMNT, SYSLOG, and
TYPE21s are then merged to create a single tape event record
for each mount which can be aggregated across each day to get 
a very accurate total GB statistics.
And since JOB information is known, totals for different applications
can also be measured.

Barry Merrill


Herbert W. Barry Merrill, PhD
President-Programmer
Merrill Consultants
MXG Software
10717 Cromwell Drive
Dallas TX 75229
214 351 1966 tel
214 350 3695 fax
www.mxg.com
 

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