Red Hat Enterprise Linux 6.3 has been
. The release notes are
. From a review
at The H: "RHEL 6.3 officially supports allocating up to 160 processor cores and 2TB of working memory to guest systems; previously, the distribution only supported 64 cores and 512GB of RAM. Spice, which is involved in virtualising desktop PCs, can now pass through USB 2.0 devices from the system that is displaying the desktop to a local or remote virtualised guest operating system. Another new feature is support for SR-IOV-capable (Single Root I/O Virtualisation) networking hardware which can present a single physical card as multiple, separate virtual network cards; this support allows these virtual network cards to be allocated to guest systems.
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