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

FSMO ROLES TRANSFER IN GUI AND SEZIE THE ROLES IN NUTDSTUIL COMMAND

http://www.youtube.com/watch?v=5W9SbH5UCr8

Backing Up Group Policy Objects

http://www.petri.co.il/backing-up-group-policy-objects.htm

Recovering Deleted Items in users Active Directory

How to Backup and Restore Active Directory on Server 2008

http://www.trainsignal.com/blog/backup-and-restore-active-directory-on-windows-server-2008
http://www.youtube.com/watch?v=FvRqoHXkBpA

Recovering Deleted Items in Active Directory

http://www.petri.co.il/recovering-deleted-items-active-directory.htm#

How to Search for Deleted Objects in Active Directory

http://www.petri.co.il/deleted-objects-in-active-directory.htm

Using the Active Directory Recycle Bin in Windows Server 2008 R2

http://www.petri.co.il/using-active-directory-recycle-bin.htm

Enable the Active Directory Recycle Bin in Windows Server 2012

http://www.petri.co.il/enable-active-directory-recycle-bin-windows-server-2012.htm

Windows Server 2012 Top Ten Features

http://www.youtube.com/watch?v=M9y4mhkQo50

Introduction to Active Directory Directory Services Structure in Windows Server 2012

http://www.youtube.com/watch?v=lFwek_OuYZ8

SEIZE AND TRANSFFER OF FSMO ROLES

http://www.youtube.com/watch?v=5W9SbH5UCr8

The best way to identify the 5 FSMO Roles in your Active Directory Environment

http://www.youtube.com/watch?v=-0bCwQC0pGo