Sun Microsystems has released the OpenSolaris 2009.06 operating system, with significant improvemepts in networking, storage and virtualisation, in addition to performance enhancements and developer productivity updates. Central to the new release is the inclusion of Project Crossbow. As a follow on to the ZFS technology, Project Crossbow's complete rearchitecture of the network stack becomes the new standard for how networking at the operating system level is done. It delivers the networking capability designed for virtualisation in combination with highly scaled, multiple-core, multi-threaded processors connected with extremely fast network interfaces.

New, fully integrated Flash storage support in ZFS helps in optimising large-scale pools of storage by designating Flash devices as write accelerators and read accelerators. These pools are automatically managed by ZFS to achieve extreme levels of performance across many workloads, making the need for small caches on RAID controllers obsolete.

Native support for Microsoft CIFS has been added as a full peer to NFS, as a high performance kernel with integrated features and support for Microsoft Windows semantics for security, naming and access rights, allowing transparent use and sharing of files across Windows, Linux and Solaris environments. In addition to this, the OpenSolaris platform delivers key server virtualisation technologies in the form of Solar is Containers, Logical Domains (LDoms) for Sun CMT systems and the Xen-based hypervisor to give users a complete virtualisation platform built directly into the OpenSolaris OS.

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