Managing Serviceguard 14th Edition, June 2007

Understanding Serviceguard Software Components
Volume Managers for Data Storage
Chapter 3 123
Base-VxVM • Software is supplied free with
HP-UX 11i releases.
• Java-based administration
through graphical user
interface.
• Striping (RAID-0) support.
• Concatenation.
• Online resizing of volumes.
• Supports multiple heartbeat
subnets.
• Cannot be used for a cluster
lock
• root/boot disk supported
only on VxVM 3.5 or later,
on HP-UX 11i
• Supports only exclusive
read or write activation
• Package delays are possible,
due to lengthy vxdg import
at the time the package is
started or failed over
Veritas Volume
Manager— Full
VxVM product
B9116AA (VxVM
3.5)
B9116BA (VxVM
4.1)
B9116CA (VxVM
5.0)
• Disk group configuration from
any node.
• DMP for active/active storage
devices.
• Supports exclusive activation.
• Hot relocation and unrelocation
of failed subdisks
• Supports up to 32 plexes per
volume
• RAID 1+0 mirrored stripes
• RAID 1 mirroring
•RAID 5
• RAID 0+1 striped mirrors
• Supports multiple heartbeat
subnets, which could reduce
cluster reformation time.
• Requires purchase of
additional license
• Cannot be used for a cluster
lock
• Using the disk as a
root/boot disk is only
supported for VxVM 3.5 or
later, when installed on
HP-UX 11i.
• Does not support activation
on multiple nodes in either
shared mode or read-only
mode
• May cause delay at package
startup time due to lengthy
vxdg import
Table 3-5 Pros and Cons of Volume Managers with Serviceguard
Product Advantages Tradeoffs