Example: Modifying Dssi Device Parameters; How Openvms Axp Sees Unit Numbers For Dssi Devices - DEC 4000 600 series Owner's Manual

Figure 6–7 How OpenVMS AXP Sees Unit Numbers for DSSI Devices
Allocation Class=0
R7BUCC$DIA0
R7CZZC$DIA1
R7ALUC$DIA2
R7EB3C$DIA3
R7IDFC$DIA0
R7IBZC$DIA1
R7IKJC$DIA2
R7ID3C$DIA3
R7XA4C$DIA4
R7QIYC$DIA5
R7DA4C$DIA6
*
Nonzero allocation class examples with an asterisk indicate duplicate device names.
For one of the DSSI buses, the unit numbers need to be reprogrammed to avoid this error.
Example: Figure 6–8 shows sample DSSI buses and drive IDs for a sample
expanded DEC 4000 AXP system.
Modifying
DSSI Device
Following Figure 6–8 is an example in which the allocation class
Parameters
will be set to 1, the devices for Bus A (in the DEC 4000 AXP) will
be assigned new unit numbers (to avoid the problem of duplicate
unit numbers), and the system disk will be assigned a new node
name.
Setting and Examining Parameters for DSSI Devices
Nonzero Allocation Class
(Example: ALLCLASS=1)
*
Duplicate 0
$1$DIA0
*
$1$DIA1
$1$DIA2
$1$DIA3
$1$DIA0
$1$DIA1
$1$DIA2
$1$DIA3
$1$DIA4
$1$DIA5
$1$DIA6
Duplicate 1
*
Duplicate 2
*
Duplicate 3
LJ-02063-TI0
System Configuration 6–29