VMware vSphere 5.1 will support 64 vCPU’s and 16 Gbps Fibre Channel

VMware will announce the  latest release of its server virtualization solution vSphere 5.1 at VMworld.  While VMware has not published any confirmation or information on the release itself, let alone its features, some details have become available. In a whitepaper of Emulex some details of vSphere 5.1 have appeared.

See a complete overview of what is new in vSphere 5.1 in this posting,

Mind this is probably not a complete overview of new features!

According to the Emulex whitepaper:

  • vSphere 5.1 will support 64 virtual CPU’s in a VM. That is an increase of 2 times compared to vSphere 5.0
  • vSphere 5.1 will also support 16 Gbps Fibre Channel

Some other enhancements are:

Storage DRS
vSphere 5.1 enables more granular latency measurement for I/O load balancing called “VMobservedLatency”. This is achieved
by measuring the I/O request-response time between a VM and the datastore. In vSphere 5.0, latency was measured as the
I/O request-response time between the host and the datastore.

Storage I/O Control (SIOC)
vSphere 5.1 improves SIOC functionality by automatically computing the best latency threshold for a datastore in lieu of using
a default or user selected value. This latency threshold is determined by modeling, when 90% of the throughput value is

Advanced I/O Device Management
vSphere 5.1 introduces new commands for troubleshooting I/O adapters and storage fabrics. This enables diagnosis and
querying of FC, and Fibre Channel over Ethernet (FCoE) adapters, providing statistical information that allows the administrator
to identify issues along the entire storage chain from the HBA to the ESXi, fabric and storage port.

Efficient storage
vSphere 5.1 introduces Flexible Space Efficiency (Flex-SE), a disk format to achieve the right balance of space efficiency
and I/O throughput. This balance can be managed throughout the life cycle of a VM, from storage allocation (controlling the
allocation block size) to how the blocks are managed after they are allocated (deleted blocks can be reclaimed). This feature
enables the user to determine the right level of storage efficiency for a deployment. For example, you can use Flex-SE to
optimize storage efficiency for virtual desktop infrastructure (VDI).

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