Collecting information about the I/O configuration

The Inquisitor can scan the input and output (I/O) configuration of a z/OS system to collect information about the use of hardware assets such as storage devices.

The SCANDEV command is used to request such a scan.

When you run the SCANDEV command, two additional types of records are generated which describe device groups and channel paths. Consideration of I/O devices is limited to those devices which are online at the time of the scan.

A device group is a contiguous block of device numbers, not including offline devices, where the device type, control unit type and serial number, and online channel path connectivity is the same. The channel path type is collected for each channel path used to connect to an online I/O device.

A channel that does not provide an online path to any online device is not reported even if the channel is configured online to the z/OS system.