Red Hat users invited to test RHEL 5

Red Hat Inc. has pushed out the first public beta of Red Hat Enterprise Linux 5, an upgrade to its operating system that includes virtualization technologies intended to help companies get more use from their hardware.

The company had said it would ship the final version of the product by year's end, although it's unclear now if Red Hat will meet that target. RHEL 5 Beta 1, which was released Friday, was originally due to ship in July, with a second beta expected in September.

The beta slipped because the company decided to wait for a later version of the Linux kernel, 2.6.18, to be finalized, according to Joel Berman, product management director for RHEL. He said it wasn't due to a memory management issue, as had been rumored, although there may have been a few memory bugs as well, he said.

The final product will come ship around the end of the year, "maybe a month before or after," he said. A second beta will be released before that, probably in about a month. "For Red Hat the most important thing is that it works," he said.

The beta is aimed primarily at existing subscribers to the Red Hat Network. Non-customers can try out the software but they have to contact a local Red Hat office or apply at http://www.redhat.com/rhel/details/eval/ (The page says RHEL 4 but Red Hat says it's for RHEL 5 as well).

The beta is for testing purposes and Red Hat emphasized that it's not intended for production use. It's asking for feedback to hone the final version, and wants to hear about how it is implementing the open-source Xen virtualization technology in particular.

Xen allows companies to run multiple operating systems on a server at the same time, making better use of computing power that's often otherwise left idle. Virtualization on mainframes has been around for a long time, but it's now being adopted on lower-end servers as well as they become more powerful.

Novell Inc. has already incorporated Xen into its Linux distribution, Suse Linux 10 Server, released in July. And Microsoft Corp. has said that Windows Longhorn Server will be compatible with Xen-enabled versions of Linux, allowing customers to run Linux and Windows side by side on the same server.

Red Hat has developed its own Xen management tools for installing guest servers and other tasks. Today the tools are only for the Xen hypervisor, but the company is backing an open-source project called libvert that could lead to tools for managing other virtualization environments as well, such as VMware Inc.'s. The project is described at http://www.libvert.org/.

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