TRANSFER Installation and Management Guide

Changing Parameters
Using ADMIN to Administer TRANSFER
9–22 13198 Tandem Computers Incorporated
Changing Parameters If you are keeping previous samples and you change any of the other configuration
parameters, the samples you have collected are backed up to another file called the
DEPSTATO file the next time that you run XCOOL. (These old statistics are accessible
through the OLD STATISTICS screen.)
TRANSFER keeps only one set of old statistics. If a DEPSTATO file already exists, it is
purged.
If you want to keep statistics over a long period of time, do not change parameters and
run XCOOL frequently. For instance, even though setting your SAMPLE INTERVAL
to seven days and collecting 51 samples allows you to keep statistics for a year, you
lose access to your earlier statistics if you change other parameters—like NUMBER OF
AVERAGES or SAMPLE TIME—more than once.
Stopping TRANSFER and
the SPREP Process
The SPREP process is a separate process started automatically when TRANSFER is
started (that is, when XCOOL is run). This process ensures that all TRANSFER files
involved with statistics are current and that the depot statistics facility is ready.
On an existing system, SPREP can take a significant time to complete because it must
initialize statistics for all Item Descriptor file (ITEMDESC) records on the system.
Once initialized, however, statistics collection uses little overhead. It is wise, therefore,
not to stop collecting statistics unless you are sure that you do not want them in the
foreseeable future.
Controlling Individual
Depots
As system manager with administrative write privileges, you can either exclude an
individual correspondent depot or a group depot from statistics collection or freeze
statistics collection for a depot.
When you exclude a depot, no statistics are saved. When you freeze a depot, you
disallow logon; however, statistics for the depot are maintained. If you delete a depot,
you lose all statistics for it.
You perform these actions on the CORRESPONDENT PROFILE screen or the
INTEREST GROUP PROFILE screen, explained in the TRANSFER Administration
Guide, Volume 1: Reference Manual, or through a UOW, discussed in the TRANSFER
Programming Guide.