## IOSTATS 

IOSTATS tool is part of the ibmtools.exe  file, which is available at the IBM Tape Tools FTP site. 

You can use the IOSTATS tool to measure job execution times. For example, you might want to compare the TS7700 performance before and after configuration changes. 

IOSTATS can be run for a subset of job names for a specific period before the hardware is installed. SMF type 30 records are required as input. The reports list the number of disk and tape I/O operations that were done for each job step, and the elapsed job execution time. 

## TAPEWISE 

As with IOSTATS, the TAPEWISE tool is available from the IBM Tape Tools FTP site. Based on input parameters, TAPEWISE can generate the following reports: 

GLYPH<SM590000> Tape activity analysis, including reads and Disp=mod analysis 

GLYPH<SM590000> Mounts and MBs processed by hour 

GLYPH<SM590000> Input and output mounts by hour 

GLYPH<SM590000> Mounts by SYSID during an hour 

GLYPH<SM590000> Concurrent open drives used 

GLYPH<SM590000> Long VTS mounts (recalls) 

## MOUNTMON 

As with IOSTATS, MOUNTMON is available from the IBM Tape Tools FTP site. MOUNTMON runs as a started task or batch job and monitors all tape activity on the system. The program must be authorized program facility (APF)-authorized and, if it runs continuously, it writes statistics for each tape volume allocation to SMF or to a flat file. 

Based on data that is gathered from MOUNTMON, the MOUNTRPT program can report on the following information: 

GLYPH<SM590000> How many tape mounts are necessary 

GLYPH<SM590000> How many are scratch 

GLYPH<SM590000> How many are private 

GLYPH<SM590000> How many by host system 

GLYPH<SM590000> How many by device type 

GLYPH<SM590000> How much time is needed to mount a tape 

GLYPH<SM590000> How long tapes are allocated 

GLYPH<SM590000> How many drives are being used at any time 

GLYPH<SM590000> What is the most accurate report of concurrent drive usage 

GLYPH<SM590000> Which jobs are allocating too many drives 

## 11.6 Host Console Request Commands for monitoring 

This section describes some of the host console request commands that are useful for monitoring. For more information about the host console request commands, see IBM Virtualization Engine TS7700 Series z/OS Host Command Line Request User’s Guide , WP101091. 

## 11.6.1 LI REQ,distlib,CACHE 

The LI REQ  command with the subcommand CACHE  shows you the cache use of the cluster that is defined in the command. Figure 11-36 on page 686 shows an example output. 

