There has been a lot of ill-considered press coverage about the “death” of UNIX and coverage of the wholesale migration of UNIX workloads to LINUX, some of which (the latter, not the former) I have contributed to. But to set the record straight, the extinction of UNIX is not going to happen in our lifetime.
While UNIX revenues are not growing at any major clip, it appears as if they have actually had a slight uptick over the past year, probably due to a surge by IBM, and seem to be nicely stuck around the $18 - 20B level annual range. But what is important is the “why,” not the exact dollar figure.
UNIX on proprietary RISC architectures will stay around for several reasons that primarily revolve around their being the only close alternative to mainframes in regards to specific high-end operational characteristics:
Performance – If you need the biggest single-system SMP OS image, UNIX is still the only realistic commercial alternative other than mainframes.
Isolated bulletproof partitionability – If you want to run workload on dynamically scalable and electrically isolated partitions with the option to move workloads between them while running, then UNIX is your answer.
Near-ultimate availability – If you are looking for the highest levels of reliability and availability ex mainframes and custom FT systems, UNIX is the answer. It still possesses slight availability advantages, especially if you factor in the more robust online maintenance capabilities of the leading UNIX OS variants.
OK, out of respect for your time, now that I’ve caught you with a title that promises some drama I’ll cut to the chase and tell you that I definitely lean toward the former. Having spent a couple of days here at Oracle Open World poking around the various flavors of Engineered Systems, including the established Exadata and Exalogic along with the new SPARC Super Cluster (all of a week old) and the newly announced Exalytic system for big data analytics, I am pretty convinced that they represent an intelligent and modular set of optimized platforms for specific workloads. In addition to being modular, they give me the strong impression of a “composable” architecture – the various elements of processing nodes, Oracle storage nodes, ZFS file nodes and other components can clearly be recombined over time as customer requirements dictate, either as standard products or as custom configurations.