More than half of companies that use clustering intend to increase their cluster spending over the next two to three years. Meanwhile, Linux server shipments are to outpace all other operating system platforms over the next few years. With more money being spent on clustering, Linux cluster suppliers see the opportunity, and interest in Linux cluster technology is heating up. Some Linux cluster technology is already here. More is on the way.
High availability is a key focal point in commercial clusters .
Out of at least a dozen suppliers of Linux cluster products, many focus on high-availability cluster technology. Some suppliers also tout their product's ability to scale and increase performance, and sometimes it actually can. As for high availability, Linux cluster offerings have lacked some of the robustness and sophistication of the more mature implementations available on proprietary Unix operating systems . That won't be the case for long. While none of today's Linux cluster products supports SSI, one or two of the Linux cluster suppliers are expected to support SSI functionality.