Sandbox solution is a new feature introduced in SharePoint 2010.When you are creating any SharePoint solution using Visual Studio, you
are select the solution which is either a
Sandboxed solution or a farm solution.
Sandboxed Solution
we should learn what is a
Sandbox. A sandbox is a testing environment that enables programs to
access only certain resources, and that keeps problems that occur
in the sandbox from affecting the rest of the server environment.
Basically what it does is sandbox isolates untested code from the
working environment.
So when we are deploying a solution as a sandboxed solution, the
solution cannot access content outside the site collection they are
deployed in. The sandboxed solution will not be able to use certain
computer and network resources. Since the sandboxed solution is scoped
to the site collection, we don’t really need a farm administrator to
deploy the solution. A site collection administrator can do the
deployment.
Farm Solution
In farm solutions can have scope as wide as the site
collection, web application, or the whole SharePoint farm. Since Farm
solutions can be scoped to Farm level, we need a Farm Administrator to
deploy the solution and the assemblies in the solution always run with
full trust.
Farm solutions are are hosted in the IIS worker process (W3WP.exe) and the code in the farm solutions can affect the whole farm. When you try to retract or deploy a farm solution, the whole application pool will be recycled.
Farm solutions are are hosted in the IIS worker process (W3WP.exe) and the code in the farm solutions can affect the whole farm. When you try to retract or deploy a farm solution, the whole application pool will be recycled.
Farm solutions should be used for customizations of SharePoint
administrative functions, such as custom timer jobs, custom Windows
PowerShell cmdlets, & extensions of Central Administration.
