DASD Storage Control Unit Summary

This report looks for balanced loads on the interfaces. It is designed for use by customers.

It defines the physical channel interface over which overruns occurred for the 3830, 3880, and 3990 storage control units (SCU).

A few overruns on most or all interfaces indicates that the DASD subsystems are balanced in terms of interface utilization. If overruns show on some interfaces, but not others, the load is unbalanced.

To correct an unbalanced situation, the customer can reconfigure the system to balance the load.

Figure 1 shows an example of the DASD storage control unit summary.
Figure 1. DASD Storage Control Unit Summary
DASD STORAGE CONTROL UNIT SUMMARY                   REPORT DATE 065 97
                                                    PERIOD FROM 041 97
                                                           TO   059 97

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PHYSICAL ID 101114.0  DEVTYPE 3990-02

CPU/CHANNEL                  04
  OVERRUNS  INTF-A  INTF-B  INTF-C  INTF-D  INTF-E  INTF-F  INTF-G  INTF-H  1 
  CMND          0       2       0       0       0       0       0       0
  DATA          0       0       0       0       0       0       0       0


PHYSICAL ID N/A       DEVTYPE 3830    PHYSICAL ADDR 032X       CPU(S) 19 27

  OVERRUNS  INTF-A  INTF-B  INTF-C  INTF-D
  CMND          0       2       4       0
  DATA          0       0       0       0


PHYSICAL ID A0-XX-XX  DEVTYPE 3880

CPU/CHANNEL  03
  OVERRUNS  INTF-A  INTF-B  INTF-C  INTF-D  INTF-E  INTF-F  INTF-G  INTF-H
  CMND          4       0       0       0       0       0       0       0
  DATA          0       0       0       0       0       0       0       0

  DISKETTE READER    SEEK      DATA
  TEMPORARY CHECKS      0         0

******************************************************************************

CPU  MODEL   SERIAL
 00  9375    234567
 01  3090XA  170028
 02  3084XA  321128
 03  3084XA  121128
 04  3081XA  021170
 05  3084XA  221103
 06  3081XA  220447
 07  3081XA  020447
 08  3062    511352
 09  3083XA  221573
 1 
The storage control unit channel interface.