Technical data

Figure C–2 VMS Operating System Requires Unique Unit Numbers for DSSI
Devices
Allocation Class=0
Nonzero Allocation Class
(Example: ALLCLASS=1)
R7CZZC$DIA1 $1$DIA1
$1$DIA2
$1$DIA3
$1$DIA0
$1$DIA1
$1$DIA2
$1$DIA3
$1$DIA4
$1$DIA5
$1$DIA6
R7ALUC$DIA2
R7EB3C$DIA3
R7IDFC$DIA0
R7IBZC$DIA1
R7IKJC$DIA2
R7ID3C$DIA3
R7XA4C$DIA4
R7QIYC$DIA5
R7DA4C$DIA6
Nonzero allocation class examples with an asterisk indicate duplicate device names.
For one of the DSSI busses, the unit numbers need to be reprogrammed to avoid this error.
*
Duplicate 1
*
Duplicate 2
*
Duplicate 3
*
TFDR1$MIA5 $1$MIA5
MLO-007176
R7BUCC$DIA0 $1$DIA0
Duplicate 0
*
Note
You should configure your system to have unique unit numbers even if
you have a standalone system using an allocation class of zero. That
practice will avoid problems with duplicate device names if you later
decide to form a cluster.
Programming Parameters for DSSI Devices C–5