Managing Serviceguard 13th Edition, February 2007

Understanding Serviceguard Software Components
Volume Managers for Data Storage
Chapter 3 127
VERITAS
Volume
Manager— Full
VxVM product
B9116AA (VxVM
3.5)
B9116BA (VxVM
4.1)
• 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