By David Marshall
This ebook was once first released 3/17/2006, on account that then, virtualization has developed, new models have been published and new applied sciences have emereged. The booklet talks approximately VMware GSX which was once discontinued over a 12 months in the past, ESX 2.5 (Current model is 3.5 with 4.0 round the nook) and MS digital Server that is being changed with Hyper-V on home windows Server 2008. No point out of any opensource choice (Like Xen) which wasn't mainstream in '06 but. a great learn if you are attracted to the background of virtualization.
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Additional resources for Advanced Server Virtualization: VMware and Microsoft Platforms in the Virtual Data Center
7). 7 Service Partitioning. 4/13/2006 11:28:48 AM 24 Advanced Server Virtualization Each instance of the service usually appears to consumers of that service to be a dedicated application instance (and often a dedicated server instance). Abstraction between the service application and the operating system is not required. The abstraction occurs on top of the application instance, which allows multiple instances of the application’s service to coexist. The level of isolation between service instances can vary greatly between implementations of service partitioning, and in some systems can even be controlled, providing complete isolation at one extreme and no isolation at the other extreme of the isolation conﬁguration settings.
The set of virtualization technologies used in enterprise server systems are collectively referred to as partitioning technologies. Although this book is primarily focused on server virtualization by means of software partitioning, for completeness, the diﬀerences between hardware, software, application, resource, and service partitioning are explained as well as other types of virtualization including operating systems and runtime environments. Physical Partitioning Physical partitioning refers to the separation of execution environments by literally using physically separate hardware devices or by using physical hardwarebased partitioning.
This limitation exists because 32-bit x86 architecture systems support a maximum memory size per process of 4GB and the virtualization platform consumes some of that memory as overhead. Currently, there is no virtual physical address extensions feature (or virtual PAE) designed to overcome this limitation on 32-bit systems. The virtual memory allocated to a virtual machine usually maps directly to physical memory of the host server. The term virtual memory in this context should not be confused with virtual memory as in a paging or swap ﬁle as used by many operating systems to extend the amount of physical memory available by using hard disk storage as additional memory.
Advanced Server Virtualization: VMware and Microsoft Platforms in the Virtual Data Center by David Marshall