The DEVICE TAPE report contains monitored data on I/O operations involving magnetic tape cartridge devices during a monitoring interval. The number of EXCP calls per second are counted (see also “glossary”, “EXCP“).
Report output
The REPORT DEVICE_TAPE statement allows the user to request the output of the DEVICE TAPE report. The report can only be output when the SAMPLING-DEVICE monitoring program is switched on. The monitoring program is started automatically when the SM2 subsystem is started or by the SM2 administrator by means of the statement START-MEASUREMENT-PROGRAM TYPE=*SAMPLING-DEVICE.
Overflow screens can be requested for this report. The output is sorted on the basis of the sum of READ (IO/S) and WRITE (IO/S).
HOST0001 SM2 DEVICE TAPE/MBK CYCLE: 60 S SAMPLES: 144 <date> <time>
MN | VOLUME | TYPE | IO% | READ | WRITE
| | | | (IO/S) | (KB/S) | (IO/S) | (KB/S)
------+--------+----------+-----+--------+----------+--------+----------
AF | FB4024 | 3590E | 6 | 0.2 | 0.0 | 3.9 | 6939.8
AD | | 3590E | 0 | 0.6 | 185.9 | 0.0 | 0.0
AE | | 3590E | | 0.1 | 0.0 | 0.0 | 0.0
AQ | | 3590E | 0 | 0.1 | 0.0 | 0.0 | 0.0
BD | | 3590E | | 0.1 | 0.0 | 0.0 | 0.0
Monitoring information
MN | Mnemonic device name |
VOLUME | VSN of the volume connected during the whole of the last monitoring interval If no volume is specified, either the volume was changed during the last monitoring interval or at the time of the query it was not possible to access the volume table for internal reasons. |
TYPE | Short name for the device type |
IO% | Percentage of the monitoring interval in which the device was active with I/Os |
READ | Number of input operations or number of bytes transferred per second |
WRITE | Number of output operations or number of bytes transferred per second |