Another indicator that Linux is moving into the enterprise:
Stratus is a major player in the enterprise space, most notably in
the high-availability area.
"Development work is getting underway to port Linux to
fault-tolerant hardware architecture developed by high-end server
"Stratus is best known as a niche supplier of fault-tolerant
systems based on PA RISC chips, and running either HP-UX or its own
proprietary VOS operating system. The firm uses redundant hardware
components and approved software to offer high reliability servers
to telcos and financial services firms."