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Server Virtualization Platforms & Software Vendors

Various forms of partitioning and virtualization have been around since the mid 1960s when IBM started shipping the S/360 mainframe series. Later, the CP67 operating system allowed multiple users to share the hardware resources. By the mid 1970s, virtual storage was available on IBM's S/370 and Amdahl 470Vs. In the mid 1980s, Amdahl introduced MDF (Multiple Domain Facility) which allowed hardware partitioning and was followed several years later by IBM's PR/SM LPAR hypervisor and then HDS's MLPF hypervisor. These partitioning and dynamic reconfiguration facilities started showing up in UNIX platforms in the late 1990s with Sun's E10k, HP 9000s and IBM RS6000s. Intel and AMD x86 Windows platforms didn't start to implement hardware virtualization assists until 2006.

There are currently three types of server virtualization as implemented by the major vendors:

  • Hardware and hypervisor based
  • Software based
  • Operating system based
 
Hardware Vendor
Product
Operating System(s)
Partitioning & Dynamic Reconfiguration
Fujitsu
Solaris UNIX
PPAR, XPAR
Linux & Windows
PPAR

HP

HP-UX UNIX, Linux & Windows
VSE: nPAR, vPAR
IBM
i5/OS
AIX UNIX & Linux
LPAR, mPAR
Windows & Linux
z/OS, OS/390, MVS, z/VM, VM/ESA, zVSE, VSE/ESA, Linux
Sun
Solaris UNIX
PPAR
Solaris UNIX, Linux, Windows
 
x64 Vendor
Hardware Assist

Operating System(s)

Available
AMD
Windows, Linux, Solaris
1H 2006
Intel
Windows, Linux, Solaris
3Q 2006
 
Software Vendor
Product

Operating System(s)

Available
CRN Tech article of Aug 2007Ranking
Microsoft Virtualization
Windows Server 2003, Linux
12/2006
 
Windows Server 2008 with and without Hyper-V
 
2/28/2008
3Q/2008
 
Oracle
Windows, Linux
11/2007
 
Phoenix Technologies
 
2008
 
Sun
Windows, Linux, Solaris
2Q/2008
12/2007
 
SWSOFT Server Virtualization
Windows, Linux
8/2006
#3
VMware
Windows, Linux
2000
 
1H/2008
 
Windows, Linux
7/2006
#1
Xen Source
Windows, Linux
8/2007
#2

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