I am running out of space on my ssd from photoscenery and a few other larger files. I was thinking of getting an external hd to keep all of my scenery on that and to have p3d load the scenery from the external drive. Is this possible? Are there any recommended drives or things I should avoid?

Yes, this is very possible - this is how I have all my Photoreal scenery set up. I have a separate 4TB WD Black HD with all scenery by state (USA) or country (Ireland) in my case. Then I add each one from the Scenery screen in P3D. I have all areas set in the scenery screen but only activate the state(s) I plan to fly over for any flight.

This has worked without issues for me.

 

Lyn

When OP says external drive does he mean USB drive or SATA drive? If first - forget about it. If the latter, then it makes sense offcourse, although the best solution is always SSD as they're faster.

I was thinking USB or sata. I wasn't sure what would be better.

I have a USB 3.0 drive and it loads stuff so slow that I would probably die if I would have scenery there, yet again maybe with newer USB controllers its better.

I'd go with another SSD or two as well if you have the slots available. I just installed FSGlobal NG which is 80Gb, 9 DVD's.  It took just 1/4 of the time compared to 18 hours when installed onto an HDD.  Your sim will run much smoother with an internal drive which is setup properly.

Just add another SSD or if you dont have space just get a larger SSD, I would only use an external HD for backup purposes.