Setting Up The Command Device - Hitachi AMS2100 User Manual

Setting up the command device

5-6
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
CCI can be used in place of the Navigator 2 GUI and/or CLI to operate
SnapShot. CCI interfaces with AMS through the command device,
which is a dedicated logical volume. A command device must be
designated in order to issue SnapShot commands.
Prerequisites
• Setup of the command device is required only if using CCI.
• LUs assigned to a command device must be recognized by the
host.
• The command device must be defined in the HORCM_CMD
section of the configuration definition file for the CCI instance on
the attached host.
• The command device should be a minimum of 33 MB.
• 128 command devices can be designated per AMS array.
References
• RAID configuration for LUs assigned to SnapShot on page
• Appendix A, Specifications.
• Hitachi Adaptable Modular Storage Command Control Interface
(CCI) User's Guide for more information about command
devices.
To set up a command device
The following procedure employs the Navigator 2 GUI. To use CCI,
see Setting the command device on page C-2
1. In the Settings tree view, select Command Devices. The
Command Devices screen displays.
2. Select Add Command Device. The Add Command Device screen
displays.
3. In the Assignable Logical Units box, click the check box for the
LUN you want to add as a command device. A command device
must be at least 33 MB.
4. Click the Add button. The screen refreshes with the selected LUN
listed in the Command Device column.
5. Click OK.
Configuring SnapShot
2-10.