* DEFINE 2107-9A2 LOGICAL CONTROL UNIT 5 *
* *
**********************************************************************
CNTLUNIT CUNUMBR=7005,PATH=(74,75,FC,FD),UNITADD=((00,256)), *
LINK=(24,2D,34,3D),CUADD=5,UNIT=2107
**********************************************************************
* DEFINE 3390-3 BASE AND ALIASES ADDRESS ON LOGICAL CONTROL UNIT 5 *
* 32 BASE ADDRESS, 3 ALIASES PER BASE *
* *
**********************************************************************
IODEVICE ADDRESS=(9500,032),CUNUMBR=(7005),STADET=Y,UNIT=3390B
IODEVICE ADDRESS=(95A0,096),CUNUMBR=(7005),STADET=Y,UNIT=3390A
**********************************************************************
Guidelines for defining the logical control unit for the DS8000
You can use these guidelines to define the logical control unit for the DS8000.
You need the following information in order to define the logical control unit (LCU):
v Which devices (arrays) are 3380 format, and which are 3390 format
v Which devices have PAVs, and which do not
v How many devices you define to a given LCU
Note:
1. An LCU is equivalent to a logical subsystem (LSS). Like an LSS, an
LCU can have a maximum of 256 logical devices or volumes.
2. Every device has a single unit address (in range 00 - FF).
3. An LCU can manage a maximum of 256 devices and identifies a
device based on the unit address.
Update
the I/O configuration with the appropriate devices, using the following
guidelines:
v Three device types are possible for 3380: 3380, 3380B, and 3380A.
v Three device types are possible for 3390: 3390, 3390B, and 3390A.
v Any non-PAV 3380 is a 3380, regardless of model.
v Any non-PAV 3390 is a 3390, regardless of model.
v Any 3380 PAV base is a 3380B.
v Any 3390 PAV base is a 3390B.
v Any alias of a 3380B, regardless of model, is a 3380A.
v Any alias of a 3390B, regardless of model, is a 3390A.
v Only define the actual base and alias devices to IOCP or HCD to avoid
unnecessary definition of processor subchannels.
v Only define the unit address range to IOCP or HCD as necessary for the
installed devices in an LCU (64, 128, or 256). Defining the unit address range
enables you to put more LCUs and devices on a channel path.
IBM
recommends that you document the configuration you define for the DS8000.
With the exception of the 3380 and 3390 models, the DS8000 configuration and the
IOCP input must match.
Note: The CU device is a 2107 for any DS8000 device type. In HCD you can use
3990 as a control-unit type for 3380 and 3390 devices. However, you must
use 2107 as the control-unit type for 3380B, 3380A, 3390B, and 3390A
devices.
Chapter 8. Optional feature codes for the DS8000 103
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