Dynamic Device Reconfiguration (DDR) Detail Report

A dynamic device reconfiguration (DDR) record is created for each operator-initiated or system-initiated swap between direct-access devices having buffered logs and demountable disk packs (such as the IBM 3330, 3330 MOD 11, and 3340 devices) and between magnetic tape devices.

The DDR record identifies the physical devices involved in the swap.

Figure 1 and Figure 2 contain examples of the dynamic device reconfiguration (DDR) detail report.

Figure 1. Dynamic Device Reconfiguration (DDR) Detail Report

--- RECORD ENTRY TYPE - DDR   SOURCE - DDR   MODEL -  3090   SERIAL NO. 170802

MVS/370    V2 R1

                              DAY YEAR   HH.MM.SS.TH   JOB IDENTITY CPSB46

                              042  97    20 32 10 71                C3D7E2C2F4F64040

FROM UCB DEVICE TYPE        32108003                       TO UCB DEVICE TYPE        32108003
FROM CHANNEL UNIT ADDRESS     000580                       TO CHANNEL UNIT ADDRESS     000581  1 
FROM VOLUME SERIAL NUMBER     F22011                       TO VOLUME SERIAL NUMBER
FROM PHYSICAL ID                  00                       TO PHYSICAL ID                  00

RECORD DEPENDENT SWITCH           50

SECONDARY STORAGE RECONFIGURATION

RECONFIGURATION PERFORMED AS A RESULT OF A PERMANENT ERROR

   HEX DUMP OF RECORD
   HEADER    60890A50    00000000    0097042F    20321071        61170802    30900000

       0000  C3D7E2C2    F4F64040    C6F2F2F0    F1F10000        00000000    00000580    32108003    00000581
       0020  32108003

Figure 2. Dynamic Device Reconfiguration (DDR) Summary Report

SUMMARY OF DDR RECORDS               DEV 000580

                      DAY YEAR   DAY YEAR
RECORD DATE RANGE     042  97    042  97

MODEL - 3090     SERIAL NO - 170802

TOTAL NUMBER OF RECORDS=0001

1: For records created in 370XA mode, the device number (DEV) replaces control unit address (CUA).