How HCM makes I/O configuration work easier

HCD is an interactive interface for defining I/O configurations provided on z/OS, and HCM is more intuitive and ease-of-use than HCD, as an example of creating I/O subsystems, by comparing the process of configuring the I/O subsystem with HCM and HCD, Highlights how HCM makes it more reliable and convenient for system operators to configure their work.

HCD is an interactive interface for defining I/O configurations provided on z/OS, and unlike HCD, HCM is a step closer to intuition, ease of use, reliability, and this article describes the process of configuring the I/O subsystem using HCD and HCM, Demonstrates how HCM makes it easier and more reliable to configure the system operators.

Suppose you want to configure a DS8000, which contains 16 of the 2107-type control Unit,control the starting value of unit number 9000, and the offset value is 80,device as shown in the following table:

Control Unit	Devices	Control Unit	Devices
9000	9000-903f 3390B 9040-907f 3390A	9400	9400-941f 3390B 9420-947f 3390A
9080	9080-90BF 3390B 90C0-90FF 3390A	9480	9480-949f 3390B 94a0-94ff3390a
9100	9100-913f 3390B 9140-917f 3390A	9500	9500-951f 3390B 9520-957f 3390A
9180	9180-91BF 3390B 91C0-91FF 3390A	9580	9580-959f 3390B 95A0-95FF 3390A
9200	9200-923f 3390B 9240-927f 3390A	9600	9600-961f 3390B 9620-967f 3390A
9280	9280-92BF 3390B 92C0-92FF 3390A	9680	9680-969f 3390B 96A0-96FF 3390A
9300	9300-933f 3390B 9340-937f 3390A	9700	9700-971f 3390B 9720-977f 3390A
9380	9380-93BF 3390B 93C0-93FF 3390A	9780	9780-979f 3390B 97A0-97FF 3390A

Table 1 Configuration Requirements

First, show the HCD configuration process.

Add a new control unit by using the Add or add like HCD, as shown in Figure 2:

Figure 2 Adding control unit

HCD Specifies one control unit number at a time, which needs to be added at least 16 times for the above configuration requirements.

Let's take a look at adding device:

Add one or more new device through the HCD Add or add like, as shown in Figure 3:

Figure 3 Adding device

When adding device with HCD, you can add multiple device number sequential device at a time by specifying the quantity of device, but when device numbers are discontinuous, you need to add them separately, with the configuration requirements for table 1 as an example, to add at least 32 times.

Specifies the control unit for each device, which can be specified while adding device.

The configuration process for HCM is shown below.

The advantages of HCM in completing this work are highlighted in the following three points:

1. Can quickly create multiple similar control unit with one key:

Specifies a starting value of 9000, an overlay value of 0080, and a number of additions specified as 16, as shown in Figure 4

Figure 4 Adding control unit