Specifications

7–28 CLI Commands
In transparent failover mode, adding unit D0 creates a logical unit and presents it as
D0 to the host on port 1. Adding unit D100 creates a logical unit and presents it as
D100 to the host on port 2. Units must be on a single port. Do not split partitioned
units across ports.
In multiple-bus failover mode, adding unit D0 creates a logical unit that is presented
to both ports on that controller. However, the other controller’s ports can also access
that unit if given permission by the host.
The LUN number a host connection assigns to a LUN is a function of the
UNIT_OFFSET qualifier in the ADD (or SET) connections command: LUN number
= unit number - offset
If no value is specified for the UNIT_OFFSET qualifier in the ADD (or SET)
CONNECTIONS command, then host connections on controller port 1 have an offset
of 0 and host connections on controller port 2 have an offset of 100. These are the
default offset values.
container-name
Specifies the name of the container (disk drive, device, storageset, or partition) that is
used to create the unit.
A maximum of 48 devices can make up one unit.
Switches
Table 7–2 lists all switches for the ADD UNIT command and identifies which
switches may be used with each type of device or storageset. Descriptions of each
switch follow the table.