Managing Serviceguard 13th Edition, February 2007

Understanding Serviceguard Software Components
Volume Managers for Data Storage
Chapter 3116
For instructions on migrating a system to agile addressing, see the white
paper Migrating from HP-UX 11i v2 to HP-UX 11i v3 at
http://docs.hp.com.
NOTE It is possible, though not a best practice, to use legacy DSFs (that is,
DSFs using the older naming convention) on some nodes after migrating
to agile addressing on others; this allows you to migrate different nodes
at different times, if necessary.
CAUTION There are special requirements for migrating cluster lock volumes to
agile addressing; see “Updating the Cluster Lock Configuration” on
page 324.
For more information about agile addressing, see following documents at
http://www.docs.hp.com.:
•the Logical Volume Management volume of the HP-UX System
Administrator’s Guide (in the 11i v3 -> System Administration
collection on docs.hp.com)
•the HP-UX 11i v3 Installation and Update Guide (in the 11i v3 ->
Installing and Updating collection on docs.hp.com)
• the white papers
— The Next Generation Mass Storage Stack (under Network and
Systems Management -> Storage Area Management on
docs.hp.com)
— Migrating from HP-UX 11i v2 to HP-UX 11i v3
— HP-UX 11i v3 Native Multi-Pathing for Mass Storage
See also the HP-UX 11i v3 intro(7) manpage, and “About
Multipathing” on page 45 of this manual.
Examples of Mirrored Storage
Figure 3-20 shows an illustration of mirrored storage using HA storage
racks. In the example, node1 and node2 are cabled in a parallel
configuration, each with redundant paths to two shared storage devices.