HP XP RAID Manager Software - Manual (Page 174)

8 Examples of using RAID Manager commands
Examples are provided to help you perform RAID Manager commands.
Group version control for mixed storage system configurations
Before executing each option of a command, RAID Manager checks the facility version of the
storage system internally to verify that the same version is installed on mixed storage system
configuration. If the configuration includes older storage systems (e.g., XP1024/XP128 Disk Array),
this method may not meet the requirements for the mixed storage system environment, because the
older storage system limits the availability enhancements in later facility versions. If the facility
versions of the storage systems are different, you can not use XP12000 Disk Array/XP10000 Disk
Array-specific facility, because RAID Manager applies the minimum version to all storage systems.
To expand the capability for mixed storage system configurations and avoid problems such as
this, RAID Manager supports the following group version control to manage a version for each
group.
•
RAID Manager (HORCM daemon) makes a facility version for each group based on a
configuration file at the startup of HORCM.
•
In a mixed storage system configuration, if the facility version of the storage systems (e.g.,
XP24000/XP20000 Disk Array and XP12000 Disk Array/XP10000 Disk Array) is different
on a group, RAID Manager will apply the minimum version for each group (see the following
figure).
Figure 64 Definition of the group version
LDM volume discovery and flushing for Windows
Windows systems support the Logical Disk Manager (LDM) (such as VxVM), and a logical drive
letter is typically associated with an LDM volume (\Device\HarddiskVolumeX). Therefore, you can
not know the relationship between LDM volumes and the physical volumes of the RAID storage
system. Therefore, you need to create the RAID Manager configuration file, and you need to know
the relationship that is illustrated in
Figure 65 (page 175) .
174 Examples of using RAID Manager commands