I have read a few other similar questions here but am hoping to learn other peoples opinion and experience.
My iMac is just over year old and I have nearly used all of my 8GB of memory (I've been so creative this year!). I need to do something asap. I know my problems could be solved with the MacPro. I can't buy one right now--but I do need to get a lot of my hard drive space back. I have hired someone to untangle my Lightroom twice over the years and don't want to run into any self-inflicted problems again if at all possible! So my questions are: How can I free up a lot of space as painlessly as possible? And 2) how best to do that? Note: I am using Time Machine for all backups (this failed recently and the whole thing emptied), I am using a WD external drive and cloud backups for my image-oriented work, but need something much bigger than my current WD external drive for this move and new destination. I did some research and wonder if something like a Drobo or G-Tech Raid drive might suffice? My biggest concerns are messing up my Lightroom (again) and having lots of disconnected images--and the possibility of setting it up in the wrong way--and watching my hard drive fill up again. Any thoughts, experiences, or suggestions would be appreciated. Thank you.
The instructions are here: Adobe Lightroom - Find moved or missing files and folders (scroll down to the section entitled "Updating Folder Location")
Basically, using your operating system, COPY (not MOVE) the photos to the external HD. Then open Lightroom, right click on the top level folder and select Update Folder Location, and point to the top level folder that contains your photos on the external HD. Once you are sure this has worked properly, you can then delete the photos from your internal HD.
Thank you, @dj_paige -- that sounds easy enough...