HP XP Data Shredder Software - Manual (Page 6)

1 Overview of Virtual LVI/LUN and Volume Shredder
This chapter provides a brief description of Virtual LVI/LUN and Volume Shredder.
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“Virtual LVI/LUN (VLL)” (page 6)
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“Volume Shredder” (page 6)
Unless otherwise specified, the term storage system in this guide refers to the following disk arrays:
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HP StorageWorks XP24000 Disk Array
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HP StorageWorks XP20000 Disk Array
The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer
browser. Actual windows may differ depending on the operating system and browser used. GUI
contents also vary with licensed program products, storage system models, and firmware versions.
Virtual LVI/LUN (VLL)
Virtual LVI/LUN (VLL) allows you to configure variable-size volumes, which are usually smaller than
normal (fixed-size) volumes. Virtual LVI/LUN improves data access performance by reducing logical
device contention and host I/O queue times, particularly when several frequently accessed files
are located on the same volume. Virtual LVI/LUN enables better utilization of the physical storage
capacity of the storage system, and reduces the amount of administrative effort required to balance
I/O workloads. It also boosts remote copy performance by eliminating the need to copy large
volumes of information that are only partially used.
Virtual LVI/LUN used in conjunction with Cache Residency Manager can achieve greater
performance improvements than when either of these options is used individually. For more
information on Cache Residency Manager, see the HP StorageWorks XP24000/XP20000 Cache
Residency Manager User Guide.
Volume Shredder
Volume Shredder is a component of Virtual LVI/LUN. Volume Shredder enables the shredding of
sensitive data once the prescribed retention period ends.
6 Overview of Virtual LVI/LUN and Volume Shredder