Managing HP Serviceguard A.12.00.00 for Linux, June 2014

Figure 26 Physical Disks Combined into LUNs
NOTE: LUN definition is normally done using utility programs provided by the disk array
manufacturer. Since arrays vary considerably, you should refer to the documentation that
accompanies your storage unit.
3.6.2 Monitoring Disks
Each package configuration includes information about the disks that are to be activated by the
package at startup. If monitoring is used, the health of the disks is checked at package startup.
The package will fail if the disks are not available.
When this happens, the package may be restarted on another node. If auto_run is set to yes,
the package will start up on another eligible node, if it meets all the requirements for startup. If
auto_run is set to no, then the package simply halts without starting up anywhere else.
The process for configuring disk monitoring is described in “Creating a Disk Monitor Configuration”
(page 209).
3.6.3 More Information on LVM
Refer to the section “Creating the Logical Volume Infrastructure” in Chapter 5 for details about
configuring volume groups, logical volumes, and file systems for use in Serviceguard packages.
For a basic description of Linux LVM, see the article, Logical Volume Manager HOWTO on the
Linux Documentation Project page at http://www.tldp.org.
3.6.4 Veritas Volume Manager (VxVM)
Veritas Volume Manager (VxVM) by Symantec is a storage management subsystem that allows
you to manage physical disks and LUNs (Logical Unit Numbers) as logical devices called volumes.
A VxVM volume appears to applications and the operating system as a physical device on which
file systems, databases, and other managed data objects can be configured.
NOTE: VxVM and VxFS are supported on HP Serviceguard A.12.00.00 with Veritas Storage
Foundation™ 6.0.1 and later.
70 Understanding Serviceguard Software Components