Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Understanding Serviceguard Software Components
Volume Managers for Data Storage
Chapter 3 117
Table 3-5 Pros and Cons of Volume Managers with Serviceguard
Product Pros Cons
Logical Volume
Manager (LVM)
• Legacy system is robust and
familiar to HP-UX users
• Existing packages do not need to
be changed
• Supports up to 16 nodes per
cluster
• Supports use of PV links for
multiple data paths
• Supports exclusive activation as
well as read-only activation from
multiple nodes
• Can be used to configure a
cluster lock disk
• Supports multiple heartbeat
subnets
• Lacks flexibility and
extended features of other
volume managers
• PV links are active/standby
only, with one link active at
a time
Base-VxVM • Software is free with HP-UX 11i
and later
• Simple basic features provided
• Supports multiple heartbeat
subnets
• Limited feature set
• Cannot be used as a cluster
lock device