If you are using SSIS 2012, you should also be aware of the new project deployment model. Some fairly detailed info here[/url].
If you use it, you don't get any choice about the location of the packages (they go into SQL Server - a new database called the SSIS Catalog). You will find lots of resources on-line regarding pros and cons of using it. For me, there aren't many cons, though it takes a while to get used to the idea that single packages can no longer be deployed in isolation, if you're familiar with the pre-2012 way of doing things.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.