Hitachi HUS VM, Руководство пользователя и справочник

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The following table shows the checking function combinations between the
precheck function and the transaction mode.
Table 1-2 Summary of the checking functions
Command syntax
Syntax
check
Context
check
Config
check
Execution
raidcom <command>
Executed Not
executed
Not
executed
Executed
raidcom <command> -checkmode precheck Executed Not
executed
Not
executed
Not
executed
raidcom -zt <script file>
Executed Executed Not
executed
Executed
raidcom get ldev -ldev_id -cnt 65280
-store<work_file>
raidcom -zt <script_file> -load <work_file>
Executed Executed Executed Executed
raidcom -zt <script file> -checkmode precheck
Executed Executed Not
executed
Not
executed
raidcom get ldev -ldev_id -cnt 65280
-store<work_file>
raidcom -zt <script_file> -load <work_file>
-checkmode precheck
Executed Executed Executed Not
executed
Command execution by the in-band and out-of-band methods
The two methods for issuing commands from a host are the in-band method
and the out-of-band method:
• In-band method
The method issues a command from a UNIX/PC host connected directly to
a storage system via Fibre Channel or iSCSI. Older CCI versions (that do
not support VSP) can only issue commands by using the in-band method.
In this method, when a command is issued, it is sent to the dedicated
LDEV (command device) of the storage system selected by the user via
Fibre Channel or iSCSI from CCI on the host.
• Out-of-band method
This method issues commands from a UNIX/PC host connected to the
storage system via LAN. As shown in the following figure, CCI supporting
VSP and later models can issue commands using the out-of-band method.
Client PCs that are not connected directly to storage systems can execute
the same scripts as the in-band method.
When a command is issued by using the out-of-band method, the
command is sent to a virtual command device via LAN from CCI on the
host. Virtual command devices are created when a command is executed
using the out-of-band method. A virtual command device can be created
by specifying the location to create a virtual command device in the
configuration definition file. For details on how to create command
devices, see HORCM_CMD (out-of-band method) on page 2-21 . Note,
however, that the location you can create virtual command devices varies
Overview
1-5
Command Control Interface User and Reference Guide