HP XP7 Storage - Manual (Page 197)

8 Examples of using RAID Manager commands
This chapter provides examples of typical tasks performed using 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 (for example, 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 cannot 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 (for
example, 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 62 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
cannot 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 63 (page 198) .
Group version control for mixed storage system configurations 197