LPAR Logical partition:
IBM Mainframe: (Sytem Z , System i)
IBM midrange iSeries and pSeries
IBM PowerVM, Power Hypervisor: provides industrial-strength virtualization for AIX®, IBMi,and Linux environments on IBM POWER®processor-based systems.
Solaris LDOMs virtualization on SPARC: (Oracle VM Server for SPARC, now)
Sun Logical Domains or LDoms is a full virtual machine that runs an independent operating system instance and contains virtualized CPU, memory, storage, console, and cryptographic devices. This technology allows you to allocate a system resources into logical groupings and create multiple, discrete systems, each with their own operating system, resources, and identity within a single computer system.
Supported Guest OS:
- Solaris 10 11/06 or later
- OpenSolaris 2009.06 release
- Ubuntu Linux Server Edition
- OpenBSD 4.5 or later
- Wind River Platform for Network Equipment, Linux Edition
HP vPAR at VSE (Virtual Server Environment) HPUX on HP9000 and HP Integrity
vPars are separate operating system instances on the same nPartition or server. This offering lets you dynamically move either CPU or memory resources between partitions as the workload requirements change. They also give you the ability to run multiple copies of HP-UX on the same hardware.
nPar partitions are electrically isolated from other nPar partitions within the same chassis. Cells (a unit of processors/IO/memory) make up nPar partitions. Being electrically isolated means that if a nPar partition were to fail due to hardware failure, then the other nPar partitions would continue to work. This is contrasted with vPar partitions which exist within nPar partitions in which a failure at the hardware level for a nPar would affect all vPars within that nPar.
It's important to note that while nPartitions support HP-UX, Windows®, VMS, and Linux, they only do so on their Itanium processor, not on their HP9000 PA Risc architecture.
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