Jim Pinkerton, a partner architect in Microsoft's File Server Technologies development group, compared the ability to use RDMA over Ethernet or InfiniBand to that of the high-speed storage protocol Fibre Channel, in that a network interface card is used to offload network protocol traffic from a server's CPU.
"Think about going over the network for storage to get better performance, but your CPU [use] doesn't go up," said Pinkerton
SMB 2.2 has a multi-channel feature that enables the use of multiple physical network interfaces in an SMB 2.2 client and server.
For example, Microsoft
has tested a SQL database running across four 10GbE channels.
said a SQL database his
team ran achieved 6.5GB/sec total throughput or 280,000 I/Os per second using 8K writes with SMB 2.2.
Windows Server 8, which will replace Windows Server 2008, will also feature Live Migration
, a tool that allows administrators to move stored copies of virtual machines from one storage server to another without taking down the virtual machine.
The migration feature could allow data to be moved while a bad hard drive or array is replaced, or it could be used for SAN upgrades or just to migrate data from one storage platform to another.
said the Live Migration upgrade will also remove downtime on Patch Tuesdays by allowing admins to migrate virtual machines and applications onto another server node, upgrade the original server and then migrate the applications back.
And, we're also using SSDs to get performance without having to tune the disks," Pinkerton
said, referring to the practice of short-stroking Fibre Channel hard drives to achieve peak performance, which also greatly reduces available storage capacity.
also upgraded its access list control (ALC) to enable users to specify who can read and write to documents based on their business unit or the sensitivity of the data itself.
For example, documents can be classified as business critical, as containing personal employee data, or they can be classified by business, such as legal, finance or marketing.
said Windows Server 8 will help companies with regulatory compliance and civil litigation by offering document classification.