UIMs
Unit information modules (UIMs) contain the information and rules that HCD uses to process I/O device definitions. When you update an IODF, HCD uses UIMs to validate the device definitions you enter.
UIMs are provided with HCD for devices that z/VM supports. For a non-supported device, you may be able to use a generic UIM or a UIM from a similar IBM device. For information about providing a UIM, see z/OS MVS Device Validation Support. To use with z/VM HCD, see Using UIMs with z/VM HCD.
Through the Supported Hardware Report, you can view a list of devices that are supported on your system.
Note: The unit-information modules (UIMs) needed
for z/OS software-configuration support are not in the z/VM® version
of HCD. Therefore, you cannot define a z/OS software configuration
using HCD on z/VM. If you have a mixed environment with z/VM and
z/OS systems on a single server, use HCD on a z/OS system as the central
place for I/O configuration definition both for the hardware and for
the z/VM and z/OS software definitions. You must then export the resulting
production IODF to any other z/OS systems and to the z/VM systems
for activation (or, alternatively, for some or all of the z/OS systems,
you can share the IODF via shared disk).