NexentaOS is a complete GNU-based open source operating system built on top of the OpenSolaris kernel and runtime. So what’s the big deal?
It’s a “best of both worlds” kind of operating system gluing SunOS kernel with GNU software. SunOS kernel is the most sophisticated UNIX kernel, period. Even Google Inc. is experimenting with the open-source version of Sun Microsystems Inc.’s Solaris operating system as a possible long-term prelude to replacing its massive global network of Linux servers, according to sources. GNU software is what make Linux so popular among different class of users.
Nexenta’s Alpha 5 release is available as an installable ISO or LiveCD that is released on 15 June. NexentaOS currently requires 32- or 64-bit x86/x64 platform with at least 256MB RAM, and a CD-ROM drive. You can try out the OS using the Getting Started Guide (pdf) to install. LiveCD needs 512MB RAM for root partition’s ramdisk and kernel loaded together.
What is Desktop Virtualization and how is it different from Server Virtualization like Solaris Zone? Essentially the technology behind them is identical. The difference is in the problem it addresses.
Server Virtualization takes control of a sprawling number of servers that were sucking power and becoming tough to cool. It also addresses some aspect of security and manageability. However, the ultimate goal is about saving money and consolidation.
Traditionally tool like VMware Workstation is only useful for development and testing. Increasingly, enterprise customers are starting to look at slicing and dicing desktop CPUs, just as they are doing with server CPUs, to isolate and secure workloads on single physical systems. This approach to desktop virtualization goes beyond the more common practice, in which applications and workloads are hosted at a remote location for centralized management and remote access.