"RHEL 6 offers greatly enhanced scalability and is well equipped
to handle future technological advances. The switch to KVM
virtualisation and server subscription tweaks may not be
universally popular, but existing Red Hat customers and new Linux
converts should still consider it.
"Major new versions of Red Hat Enterprise Linux (RHEL) don't
come along that often — which is the way the platform's
corporate buyers generally like it. Still, the relentless march of
technology means that new versions are needed from time to time,
and with RHEL 6 Red Hat is both playing catch-up on advances since
the last big overhaul and looking to future-proof its platform.
"To be fair, there have been interim updates since RHEL 5 was
introduced back in 2007 — the most recent, RHEL 5.5, was just
under a year ago. However, that did little to address the
underlying scalability of the Red Hat Linux distro — a charge
that can't be levelled at its successor, which is designed to take
full advantage of the latest developments in multi-core and other
hardware technologies, and then some."