Compaq 9900 - Manual (Page 73)

Hitachi Lightning 9900™ User and Reference Guide 59
4.2.2 Hardware Definition Using HCD (MVS/ESA)
The Hardware Configuration Definition (HCD) utility can be used to define the 9900
subsystem in an MVS/ESA environment. The HCD procedures for 3990 and 2105 controller
emulation types are described below. FICON™ support requires 2105-F20 emulation.
3990 Controller Emulation. To define a 9900 subsystem with 64 or fewer LVIs, use the same
procedure as for an IBM
® 3990-6, 3990-6E, or 3990-3 subsystem (see Table 4.4). The
hardware definition for a 9900 subsystem with more than 64 LVIs (see Table 4.5) is different
than that for an IBM
® 3990 subsystem.
Table 4.4 HCD Definition for 64 LVIs
Parameter Value
Control Frame:
Control unit number Specify the control unit number.
Control unit type 3990-6 or 3990-6E (using 3990-6 emulation)
3990-3 (using 3990-3 emulation)
Channel path IDs Specify ExSA™ or FICON™
Unit address 00 (ExSA™ or FICON™)
Number of units 64
Array Frame:
Device number Specify the first device number.
Number of devices 64
Device type 3390
Connected to CUs Specify the control unit number(s).
Table 4.5 HCD Definition for 256 LVIs
Parameter Value
Control Frame:
Control unit number Specify the control unit number.
Control unit type NOCHECK*
Use UIM 3990 for more than 128 logical paths
Use UIM 3990-6 for 128 or fewer logical paths
Channel path IDs Specify ExSA™ or FICON™
Unit address 00 (ExSA™ or FICON™)
Number of units 256
Array Frame:
Device number Specify the first device number.
Number of devices 256
Device type 3390
Connected to CUs Specify the control unit number(s).
*Note: The NOCHECK function was introduced by APAR OY62560. Defining the 9900 as a single control unit allows all channel
paths to access all DASD devices.