Size of a sharepoint web application

Question

How do you figure out the current size of the sharepoint web application? Better yet, the size of a site collection or a subsite.

I am planning to move a site collection from one farm to another. I need to plan the storage capacity first.

Answer 1

Providing you are using SharePoint 2007 then open Site Actions / Site Settings / Storage Space Allocation.

Or from the command line:

STSADM.exe -o enumsites -url http://path_to_site

STSADM is located in C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN\

More on Google.