One of the most common implementations of multiple LVMs on a single system is the use of Solstice DiskSuite software to manage the boot disk and VxVM to manage all other disks. This system design is usually implemented because the following are perceived to be true:
VxVM is a hindrance for the boot disk, especially when attempting system recovery.
Solstice DiskSuite software is easier to remove and, therefore, it is easier to recover a system with a Solstice DiskSuite software-managed boot disk.
Solstice DiskSuite software is unsuitable for managing large systems, especially those with a large number of disks or large disks.
Each of these statements has some degree of truth and is examined in greater detail ...