Veritas Volume Manager 5.0.1 Release Notes, HP-UX 11i v3, First Edition, November 2009

1 Veritas Volume Manager 5.0.1 Release Notes
This chapter discusses new features, licenses, system requirements, compatibility with previous
releases, and known problems with Veritas Volume Manager 5.0.1 which is supported on systems
running HP-UX 11i v3.
This chapter addresses the following topics:
• “Product Description”
• “New Features in This Release”
• “System Requirements”
• “Product Licensing”
• “VEA Graphical User Interface and System Management Home Page (SMH)”
• “Coexistence with HP Logical Volume Manager (LVM)”
• “Unsupported Features” (page 15)
• “Limitations of VxVM 5.0.1 on HP-UX 11i v3”
• “Known Problems And Workarounds”
Product Description
Veritas Volume Manager is a storage management tool that removes the physical limitations of
disk storage so that you can configure, share, manage, and optimize storage I/O performance
online without interrupting data availability. VxVM also provides easy-to-use, online storage
management tools to reduce planned and unplanned downtime.
Currently, VxVM 5.0.1 is available on independent media only but may later be integrated into
the HP-UX 11i v3 Operating Environment, replacing the currently available 5.0 version.
New Features in This Release
The following new features are supported in VxVM 5.0.1 on the HP-UX 11i v3 operating system:
• The SmartMove™ Feature
SmartMove reduces the time and I/O required to attach or reattach a plex to an existing
VxVM volume, in the specific case where a VxVM volume has a VxFS file system mounted
on it. The SmartMove feature uses VxFS information to detect free extents and avoids copying
them.
SmartMove provides the following benefits:
— Less I/O is sent through the host, through the storage network, and to the disks or LUNs.
— Faster plex creation results in faster array migrations.
— Ability to migrate from a traditional LUN to a thinly provisioned LUN. This removes
unused space in the process.
In this release, the SmartMove feature is turned off by default. You can enable this feature
by specifying the usefssmartmove=on option in the /etc/default/vxsf file. To use
the SmartMove feature, VxVM and VxFS version 5.0.1 or later is required.
NOTE: The Smartmove feature is available only with the SG-SMS license.
• Dyname Disk Addition, Removal, and Replacement Operations
During dynamic reconfiguration (DR) operations, such as disk addition, removal, or
replacement, you must enable the dmp_cache_open tunable. However, this tunable is
turned off by default.
To enable the dmp_cache_open tunable, use the following command:
Product Description 5