Installation Guide

NOTE: The disk group version must be at least 160 to create and use the cdsdisk format
on disks of size greater than 1 TB.
IMPORTANT: VxVM uses the Global Partition Table (GPT) format to initialize disks of size
greater than 1TB in the cdsdisk format. HP Logical Volume Manager (LVM) and the
diskowner command do not recognize disks formatted with the GPT layout. So, LVM and
the diskowner command do not recognize disks of size greater than 1 TB.
For more information, refer to the “Known Problems and Workarounds” section of the Veritas
Volume Manager 5.1 SP1 Release Notes.
• Default format for auto-configured disks has changed
VxVM will initialize all auto-configured disks with the cdsdisk format, by default. To change
the default format, use the vxdiskadm command to update the /etc/default/vxdisk
file.
• Default naming scheme for devices is Enclosure Based Naming Scheme(ebn)
Starting with the VxVM 5.1 SP1 release, the default naming scheme for devices has changed
to the Enclosure Based Naming Scheme(ebn). The following example shows some
sample device names on a system running VxVM 5.1 SP1:
Example 1 Sample device names on a system using the Enclosure Based Naming
Scheme(ebn) (default in VxVM 5.1 SP1)
DEVICE TYPE DISK GROUP STATUS
disk_0 auto:cdsdisk c4t0d0 dg1 online
disk_1 auto:LVM - - LVM
disk_2 auto:LVM - - LVM
disk_3 auto:LVM - - LVM
disk_4 auto:hpdisk rootdisk01 rootdg online
To change the default naming scheme to the Legacy Device Naming Scheme, use the
following command:
# vxddladm set namingscheme=osn mode=legacy
The following example shows some sample device names on a system using the Legacy
Device Naming Scheme:
Example 2 Sample device names on a system using the Legacy Device Naming Scheme
DEVICE TYPE DISK GROUP STATUS
c0t6d0 auto:hpdisk rootdisk01 rootdg online
c3t6d0 auto:LVM - - LVM
c4t0d0 auto:cdsdisk c4t0d0 dg1 online
c4t3d0 auto:LVM - - LVM
c4t9d0 auto:LVM - - LVM
To change the default naming scheme to the Agile Device Naming Scheme, use the
following command:
# vxddladm set namingscheme=osn mode=new
Veritas Volume Manager (VxVM) 13