SCO UnixWare

The next version of UnixWare (dubbed version 7, bypassing 3 through 6, and building on the OpenServer numbering system) will introduce the System V Release 5 kernel. This kernel will contain some improvements to the stock System V Release 4.2 kernel, which many Unixes are based on. These improvements include a rewritten networking subsystem that boosts performance; integrated non-uniform memory access (NUMA) support; I ₂ O support; support for up to 64 GB o f main memory, 1-TB file systems and disks, and up to 512 disks; Compaq's PCI Hot Plug (for swapping controller cards); and a technology called Multi-path I/O, which enables you to have multiple I/O cards and disk mirroring. If any element fails, the system will fail over. At the API level, System V Release 5 will introduce some 64-bit features, including a 64-bit file system and 64-bit libraries, commands, and APIs. Developers will be able to write to the 64-bit APIs today, but when they want to access the 64-bit extensions they must turn them on through a compiler switch.

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And It's Getting Better, Growing Stronger

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A new, "significantly enchanced" SVR5 kernel gives SCO's UnixWare integrated NUMA support as well as some 64-bit functions.