information on separate lines might cause syntax parsing issues, and failover
might not occur unless the HORCM startup script is restarted on the UNIX
system.
When two or more storage systems are connected, CCI identifies each
storage system using unit IDs. The unit ID is assigned sequentially in the
order described in HORCM_CMD of the configuration definition file. For a
command device alternative configuration, a special file for multiple
command devices is written.
Caution: When storage systems are shared by two or more servers, unit IDs
and serial numbers must be consistent among the servers. List serial
numbers of the storage systems in HORCM_CMD of the configuration
definition file in the same order. The following figure illustrates unit IDs when
multiple servers share multiple storage systems.
Figure 2-12 Configuration and unit IDs for multiple storage systems
For Windows 2000, 2003, 2008, and 2012
Normally, physical drives are specified for command devices in storage
systems. However, CCI provides a method that is not affected by changes of
physical drives in Windows 2000, 2003, 2008, and 2012 by using the
following naming format to specify the serial number, LDEV number, and port
number in that order:
\\.\CMD-Ser#-ldev#-Port#
Note:
For VSP G1000, G1500, and VSP F1500, add a "3" to the beginning of
the serial number (for example, enter "312345" for serial number "12345").
The following example specifies 30095 for the storage system's serial
number, 250 for the LDEV number, and CL1-A for the port number:
CCI software environment
2-19
Command Control Interface User and Reference Guide
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