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Physical volume library (pvl) information window – IBM RELEASE 7.3 User Manual

Page 134

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changes made to fields on this window are sent directly to the Mover after the appropriate button is
pressed and are effective immediately.

Field Descriptions

Server Name. The descriptive name of the Mover.

Number of Request Tasks. The number of Mover request-processing tasks that currently exist.

Number of Active Requests. The number of active requests that are being handled by the Mover.

Time of Last Statistics Reset. The time and date when the Mover statistics were last reset.

Buffer Size. The size, in bytes, of each buffer used by the Mover when transferring data. Each Mover
task uses two buffers of this size to perform double buffering during I/O operations. See the Mover
Configuration
window Buffer Size field described in Section 5.1.3: Mover Specific Configuration on
page 102 for more detailed information.

Number of Requests Processed. The number of requests that the Mover has processed since the last
time this field was cleared. Click on the Reset button to the right of the field to reset the value to zero.

Number of Request Errors. The number of requests that have returned errors since the last time this
field was cleared. Click on the Reset button to the right of the field to reset the value to zero.

Number of Data Transfers. The number of data transfers that the Mover has handled since the last time
this field was cleared. Click on the Reset button to the right of the field to reset the value to zero.

Number of Bytes Moved. The number of bytes of data that the Mover has transferred since the last time
this field was cleared. Click on the Reset button to the right of the field to reset the value to zero.

Total Move Time. The total time, in days, hours, minutes, and seconds, that the Mover tasks have spent
transferring data since the last time this field was cleared. Click on the Reset button to the right of the
field to reset the value to zero.

Operational Notes

1. The Mover statistics (Number of Requests Processed, Number of Request Errors, Number of Data

Transfers, Number of Bytes Moved and Total Move Time) may all be reset to zero. If any of these
fields are reset the Time of Last Statistics Reset field will also be updated with the current time.
The statistics fields are all initialized to zero when the Mover is started.

2. The Total Move Time statistic should not be used to determine Mover throughput rates if the

Mover handles striped media, since this is a total for all Mover tasks involved in the transfer. This
total will most likely be considerably greater than the elapsed time necessary to transfer the data.

Related Information

HPSS Error Manual, Chapter 1, Section 1.2.7: Mover Problems.

5.1.1.1. Physical Volume Library (PVL) Information Window

HPSS Management Guide

November 2009

Release 7.3 (Revision 1.0)

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