HOW TO MAKE YOUR USB FLASH DRIVE BOOTABLE

http://www.vmwarearena.com/2013/10/how-to-make-your-usb-flash-drive.html

vmware 5.5 free licence activation procedure

http://www.vmwarearena.com/2013/10/vsphere-55-download-free-esxi-55.html

VMware vSphere Hypervisor 5.5 Download Center

https://my.vmware.com/web/vmware/evalcenter?p=free-esxi5&lp=default

vshpere 5.1 vs. vsphere5.5

http://www.vmwarearena.com/2013/09/difference-between-vsphere-51-and.html

Maximum number of supported nodes in a cluster

The following table outlines the maximum number of nodes that are supported in a cluster and the required shared disk configuration.

Operating System	Number of nodes	Storage
Windows NT 4.0 Enterprise Edition Windows 2000 Advanced Server Windows 2000 Datacenter Server Windows Server 2003, Enterprise Edition Windows Server 2003, Enterprise x64 Edition Windows Server 2003, Datacenter Edition Windows Server 2003, Datacenter x64 Edition	1-2	SCSI
Windows NT 4.0 Enterprise Edition Windows 2000 Advanced Server	1-2	Fibre Channel
Windows 2000 Datacenter Server	1-4	Fibre Channel
Windows Server 2003, Enterprise Edition Windows Server 2003, Enterprise x64 Edition Windows Server 2003, Enterprise Edition for Itanium-based Systems Windows Server 2003, Datacenter Edition Windows Server 2003, Datacenter x64 Edition Windows Server 2003, Datacenter Edition for Itanium-based Systems Windows Server 2008, Enterprise Edition Windows Server 2008, Enterprise Edition for Itanium-based Systems Windows Server 2008, Datacenter Edition Windows Server 2008, Datacenter Edition for Itanium-based Systems	1-8	Fibre Channel, iSCSI, or SAS
Windows Server 2008, Enterprise x64 Edition Windows Server 2008, Datacenter x64 Edition Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Datacenter Microsoft Hyper-V Server 2008 R2 Windows Server 2012	1-16 64	Fibre Channel, iSCSI, or SAS

Ref links: 

http://support.microsoft.com/kb/288778 

http://technet.microsoft.com/en-us/library/187d6191-4f92-4f98-9cae-c5e6d5b74e76#BKMK_SCALE

RAID LEVELS 1-6

Raid 1 - 6
http://www.youtube.com/watch?v=w7Ns4jGn7Tc

RAID 10,1,0

http://www.youtube.com/watch?v=eE7Bfw9lFfs

http://www.techiebird.com/raidh.html

Tombstone Lifetime in Active Directory in Windows Servers

Default Tombstone Lifetime for New Active Directory Forests
Operating System	Default Tombstone Lifetime
Windows 2000 Server	60 days
Windows Server 2003 no service pack	60 days
Windows Server 2003 SP1	180 days
Windows Server 2003 R2	60 days
Windows Server 2003 SP2	180 days
Windows Server 2008	180 days