VMware-vSphere5.5-Platform-Whats-New(16)

vSphere 5.5最新资料

What’s New in VMware vSphere 5.5 Platform The performance enhancements are introduced to virtual machines based on the placement of the

vSphere Flash Read Cache, which is situated directly in the virtual machine’s virtual disk data path.

vSphere Flash Read Cache enhances virtual machine performance by accelerating read-intensive workloads

in vSphere environments.

The tight integration of vSphere Flash Read Cache with vSphere 5.5 also delivers support and compatibility with vSphere Enterprise Edition features such as vSphere vMotion, vSphere HA and vSphere DRS. vSphere Networking Enhancements

vSphere 5.5 introduces some key networking enhancements and capabilities to further simplify operations, improve performance and provide security in virtual networks. VMware vSphere Distributed Switch™ is a centrally managed, datacenter-wide switch that provides advanced networking features on the vSphere platform. Having one virtual switch across the entire vSphere environment greatly simplifies management. The following are some of the key benefits of the features in this release:

–The enhanced link aggregation feature provides choice in hashing algorithms and also increases the limit on number of link aggregation groups.

–Additional port security is enabled through traffic filtering support.

–Prioritizing traffic at layer 3 increases quality of service support.

–A packet-capture tool provides monitoring at the various layers of the virtual switching stack.

–Other enhancements include improved single-root I/O virtualization (SR-IOV) support and 40GB

NIC support.

Link Aggregation Control Protocol (LACP) Enhancements

In vSphere 5.1, LACP is supported. LACP is a standards-based method to control the bundling of several physical network links together to form a logical channel for increased bandwidth and redundancy purposes.

It dynamically negotiates link aggregation parameters such as hashing algorithms, number of uplinks, and so on, across vSphere Distributed Switch and physical access layer switches. In case of any link failures or cabling mistakes, LACP automatically renegotiates parameters across the two switches. This reduces the manual intervention required to debug cabling issues.

The following key enhancements are available on vSphere Distributed Switch with vSphere 5.5:

–Comprehensive load-balancing algorithm support – 22 new hashing algorithm options are available.

For example, source and destination IP address and VLAN field can be used as the input for the

hashing algorithm.

–Support for multiple link aggregation groups (LAGs) – 64 LAGs per host and 64 LAGs per

VMware vSphere VDS.

–Because LACP configuration is applied per host, this can be very time consuming for large deployments.

In this release, new workflows to configure LACP across a large number of hosts are made available

through templates.

T E C H N I C A L W H I T E P A P E R/16