Hitachi COMPUTE BLADE 500 SERIES Management Module Setup Manual page 96

Server blade in LP mode
When switching N+M cold standby in LP mode, the standby server blade
inherits the LPAR manager configuration (LPAR configuration, LPAR status,
and WWN information that LPAR manager managed) from the active server
blade. The standby server blade restarts in LP mode. Therefore, the standby
server blade can be built the same LPAR configuration as the active server
blade. Based on the LPAR manager configuration information, the server
blade OS is booted from the same disk (logical unit [LU]), and the standby
server blade can restart the same OS environment as that of the active
server blade. These inheriting contents called "configuration information of
server blade" or "configuration information".
Note:
• The same LPAR manager firmware version must be installed on the active
server blade and the standby server blade. If the LPAR manager firmware
version is different, N+M cold standby failover may fail. See
for N+M cold standby on page
• The active server blade and the standby server blade must have the same
hardware configuration and firmware version as in basic mode.
Tip: The active server blade is switched to the standby server blade when a
hardware fault occurs in the active server blade.
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Hitachi Compute Blade 500 Series Management Module Setup Guide
Figure 2-10 Server blades in LP mode
2-76.
Functional detail
Precondition