How to reduce the size of winsxs in windows 7 ultimate x64

WinSxS (SxS for Side-by-side) is a technology built into Windows as a centralized storage location for installation files for Windows, updates and application conditions that they are compatible with this technology. The goals of this technology are:
* Improve or guarantee (including through other related technology) the integrity of the system, its outbuildings and additional components / optional
* Bearing the recurrent problems of DLL conflicts which affect Windows for years.

I want to know that how to reduce the size of winsxs in windows 7 ultimate x64.

Only the account "TrustedInstaller" (approved installer) has sufficient permissions to modify files and directories stored in these locations .. This account is actually a service account, primarily responsible for all facility upgrades, service pack, features ... etc. It is also the owner of most of these files. So, unless you change these permissions (Operation not supported), no way modify the contents of these directories, WinSxS included. WinSxS, at the same time, can also uninstall the service pack a clean and safe for the system, as long as the original files are preserved.

In fact, many files in the sub directories are WinSxS "hardlinks" a very low level link that points to the actual file and behaves exactly like him. Unable to recognize a hardlink using the DIR or Explorer. The command line tool "fsutil hardlink list" displays the hardlink for a given file, but not to list all those in a given directory. To my knowledge, only non-MS tool "finddup" allows you to list them via the "-hardlink".

WinSxS folder means Windows Side-by-Side, It is has been introduced in Win XP and used to contain different versions of system files (mostly DLL) to allow certain programs to operate, it prevents when installing a program it replaces the original DLL. This file is linked to the System32 folder in its use. VISTA Microsoft developed the concept of having multiple versions of a file to avoid conflicts by putting such resources. Net Frameworks ".The low volume folder in XP can be imposed on Vista by number of programs and therefore DLL that is installed, mine weighs 4.6 GB, It should never be changed.

Since Windows 7 we get a lot of questions about the new WinSxS folder (% systemroot% \ winsxs), and many of you are convinced that this is a big consumer of disk space - a simple consultation of its properties reveals that It contains over 3,000 files, and takes 3.5GB disk system recently installed. After use, the size of the file increases even more.

The WinSxS folder may also support offline, and provides a "snapshot" of Windows Vista. Before Vista, the deployment medium was accomplished by the installation software only. IT professionals install the system on a machine, then used tools for self stereotype image of an installed system, they retorted then all of their machines. Windows itself had no concept of "image". This means that over 80% of systems were deployed and updated using a technology that was not natively supported, which called for IT services to create their own custom solutions to effectively deploy and manage Windows.