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September 2010
Introduction to Release Notes
This document provides the release notes for 3PAR VAAI Plug-in 1.1.0 for VMware vSphere 4.1.
Read this entire document before installing the Plug-in.
For the latest release of the user guide supporting VAAI Plug-in 1.1.0 for VMware vSphere 4.1, see
the Document Control System (DCS).
Supported Platforms
NOTE: For platform-specific release levels, see the 3PAR InForm OS Configuration Matrix, which can
be found on the Document Control System (DCS).
What’s New
The new 3PAR plug-in supports three features of vStorage APIs for Array Integration (VAAI):
•
Hardware Assisted Locking
•
Block Zero
•
Full Copy
The 3PAR Plug-in for VAAI delivers the following benefits:
Greater scalability by preventing VMs from competing for the same resources. Hardware
Assisted Locking reduces SCSI reservation contention that can impact performance in large
environments. Reducing conflicting resource requests removes a barrier to Virtual Machine (VM)
performance to enable greater VM density and scalability. 3PAR’s unique implementation of
Hardware Assisted Locking takes advantage of the 3PAR Gen3 ASIC to handle data comparisons in
silicon with significantly higher performance and throughput, which is especially beneficial in large-
scale VMware vSphere deployments.
Increased performance and efficiency by eliminating repetitive write commands. Block
Zero offloads large, block-level write operations of zeros to storage hardware, thus reducing server
workload. In addition, with the integration of zero-detection capability built into the 3PAR Gen3
ASIC, in combination with 3PAR Thin Persistence software, provisioning is further accelerated while
capacity consumption is reduced since zeros are prevented from being written to physical storage.
Enhanced agility with faster VM cloning and VMware Storage vMotion™. Full Copy
increases agility by minimizing the time required to perform common copy operations like virtual
machine cloning and storage workload migrations using VMware Storage vMotion™. This is made
possible by allowing the storage system to transparently manage large data movements, and by
320-200251 Rev A
3PAR VAAI Plug-in 1.1.0 for VMware vSphere 4.1 Release Notes
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