In MarsSI, workspace is the place where you put a selection of products (done from either the map or the search tabs) for futher sorting and, more importantly, request processing and copying to your home directory.

You can have multiple workspaces to manage different sets of data.

Where to manage your workspaces

To manage your workspaces, go to the workspace tab and go to the bottom of the page to select "Manage your workspaces", as shown on the screenshot bellow (you might need to scroll if your workspace has entries and/or your screen is a bit small):

Once the page is loaded, you will see a list of your workspaces. A workspace named "default" is created when you have no workspace (for example when you start using MarsSI or as a fallback if you deleted all your workspaces).