<P> A reviewer guide published by the company describes several areas of improvement in R2 . These include new virtualization capabilities (Live Migration, Cluster Shared Volumes using Failover Clustering and Hyper - V), reduced power consumption, a new set of management tools and new Active Directory capabilities such as a "recycle bin" for deleted objects . IIS 7.5 has been added to this release which also includes updated FTP server services . Security enhancements include encrypted clientless authenticated VPN services through DirectAccess for clients using Windows 7, and the addition of DNSSEC support for DNS Server Service . Even though DNSSEC as such is supported, only one signature algorithm is available: #5 / RSA / SHA - 1 . Since many zones use a different algorithm--including the root zone--this means that in reality Windows still can't serve as a recursive resolver . </P> <P> The DHCP server supports a large number of enhancements such as MAC address - based control filtering, converting active leases into reservations or Link Layer based filters, DHCP Name protection for non-Windows machines to prevent name squatting, better performance through aggressive lease database caching, DHCP activity logging, auto - population of certain network interface fields, a wizard for split - scope configuration, DHCP Server role migration using WSMT, support for DHCPv6 Option 15 (User Class) and Option 32 (Information Refresh Time). The DHCP server runs in the context of the Network Service account which has fewer privileges to reduce potential damage if compromised . </P> <P> Windows Server 2008 R2 supports up to 64 physical processors or up to 256 logical processors per system . (Only the Datacenter and Itanium editions can take advantage of the capability of 64 physical processors . Enterprise, the next - highest edition after those two, can only use 8 .) When deployed in a file server role, new File Classification Infrastructure services allow files to be stored on designated servers in the enterprise based on business naming conventions, relevance to business processes and overall corporate policies . </P> <P> Server Core includes a subset of the . NET Framework, so that some applications (including ASP.NET web sites and Windows PowerShell 2.0) can be used . </P>

How to obtain the latest service pack for windows server 2008 r2