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HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes: HP-UX 11i v3 September 2008 (B.11.31) > Logical Volume Manager and MirrorDisk/UX Release Notes

LVM and MirrorDisk/UX Overview


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Logical Volume Manager (bundle BaseLVM™) is the HP-UX default Volume Manager. It provides the user with flexibility in configuring and managing mass storage resources. In HP-UX 11i v3, the LVM kernel and commands are bundled with the core HP-UX product.

MirrorDisk/UX (bundle B2491BA™) is an optionally purchased HP-UX product to enable LVM mirroring functionality.

Overview of Changes

The initial HP-UX 11i v3 release of LVM and MirrorDisk/UX was integrated with the new mass storage stack, delivering significant performance, scalability, availability, and usability enhancements. LVM was enhanced to support larger logical volumes, temporary quiescing of volume groups, and striping with mirroring. Volume group availability was improved: resizing a LUN and modifying volume group characteristics no longer required the volume group to be recreated, and replacing a disk could be done online.

The September 2008 release of LVM and MirrorDisk/UX continues to extend the limits of mass storage, supporting a larger number of volume groups, logical volumes, and physical volumes. This release also allows a volume group to take advantage of LUN expansion online, detects and corrects problems with the boot disk's hardware path, and displays additional information.

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