System Summary Part 2

The second part of the system summary is a condensed report of every permanent and temporary error recorded for the I/O devices in your installation, listed under the CPU associated with the error.

When your CPUs share I/O devices, you must use SHARE control statements for the system summary if you want to see I/O errors combined for all the possible paths to a device that is common to different systems. See SHARE Control Statements for details.

The temporary errors appearing in part 2 of this report are totals of temporary read/write errors and statistical data.

The temporary and permanent I/O errors are listed by product or device groups. Table 1 shows the product groups in the order they appear in part 2 of the system summary and the trends reports.

Table 1. The Order of Product Groups in the Reports
ORDER PRODUCT GROUP
1 Console and unit record devices:
  1. Operator’s console
  2. Card reader
  3. Card punch
  4. Printer
  5. OCR/MICR
2 Direct-access storage devices:
  1. Disk
  2. Drum/fixed-head file
  3. Mass storage system
  4. Optical
3 Tape devices
4 Displays (channel-attached)
5 Teleprocessing (TP) communications controllers
6 Terminals
7 Other devices:
  1. Channel-to-channel adapter
  2. Cryptographic unit
  3. Dynamic pathing availability (DPA)
8 Unknown/unrecognized devices

Errors are presented by control unit or device address for each device type:

Record type Control unit or device address
For 370 records The device address is the CUA.
For 370XA records The device address is the device number.
For both 370 and 370XA records The errors are combined.
DASD is presented as follows:

The I/O error data is summarized by the control unit⁄device address or number of the device reporting each error.

Physical ID identifiers appear in the combination format of SCUID-CTLID-DEVID.

System Summary Report, Part 2 shows an example of the system summary part 2.

Parent topic: Description of the System Summary Report