Veritas Volume Manager 5.0 Release Notes HP-UX 11i v3 (5992-1952, August 2011)

• Disk Tags
Disks can be tagged with an arbitrary tag name and optional tag value. Multiple tags can
be associated with a single disk. Such tags are used by features such as Remote Mirror,
Intelligent Storage Provisioning (ISP), and importing cloned disks.
• Data Migration
The vxassist, vxevac, and vxsd commands have been enhanced to allow data to be
migrated at the volume, disk, or subdisk level respectively. Once the data migration is in the
tentative state, it can either be committed or cancelled.
• Raw I/O access to volume components of a volume set
A mechanism is provided to allow access to the raw device files of the component volumes
of a volume set. This is intended to allow the component volumes to be backed up and restored
individually.
• Maximum number of component volumes in a volume set
The maximum number of component volumes in a volume set has been increased to 2048.
• Importing cloned disks
Disks that have been duplicated outside the VxVM environment (usually using specialized
hardware) are referred to as cloned disks. The vxdisk and vxdg commands have been
enhanced to allow such cloned disks to be identified, tagged, and more easily managed. For
example, a subset of the disks in a disk group that are similarly tagged can be imported
together in a single operation.
NOTE: This feature requires an additional license and is not available with Base-VxVM and
Full VxVM bundle.
• ISP enhancements
The following enhancements have been made to the ISP feature:
◦ The vxassist command can now be used instead of the vxvoladm command to create
ISP volumes as well as non-ISP volumes. Any vxassist specification attributes are
converted into equivalent ISP rules.
◦ The creation of a large number of volumes in a single operation, and retrieval of
information have been speeded up.
◦ Annotation of storage devices can now be performed by assigning tags and optional tag
values to disks and LUNs.
◦ The vxassist print rules or vxvoladm print rule commands can be used to display the
raw set of ISP rules that were used to allocate storage to a volume.
◦ A specified number of volumes with a given intent can be created at the same time.
◦ The vxtemplate listtemplate command can be used to support queries such as:
Given a template, return all template sets that refer to that template.–
– Given a template, list all the templates on which the specified template is dependent.
◦ The linked break-off snapshot volume feature allows ISP to support fast resynchronization
(FastResync) with snapshot operations such as refresh and restore.
◦ The ISP intent version number has been increased to 30.
◦ Migration between non-ISP and ISP volumes is supported.
New Features in This Release 9