Just wanted to come back and touch base on this topic. I compressed a large number of games and it made a HUGE difference. Like… MASSIVE amounts of data has been saved here. Also ran into some interesting issues as well.
First off, the problem systems:
NEC TurboGrafx-CD - Initially told by RocketLauncher that this core doesn’t support CHD. I edited the AHK file for it’s module, which fixed that problem. However, I wasn’t able to get CHD compressed games to work with the core. (Though, since then I switched to the SuperGrafx core instead as I FINALLY got it to run Arcade CD-ROM^2 games… I’ll have to try this system again.
Panasonic 3DO - Not compatible with CHD’s, far as I can tell. (4D0 Core)
Sega Dreamcast - Was never able to find out if you can just convert the CHD format from old to new, or if you’d need to extract, then reconvert again. Also, and more importantly even, if it’s worth switching from Reicast to ReDream for this process anyway.
Arcade - MAME files… I have removed this system temporarily from my system. The files backed up on my 8TB desktop drive. I just don’t care that much for these titles. Given their complex structure and the fact that most of the games worth playing have ‘acceptable’ console ports using better emulators made them more or less ‘excessive’. I’ll revisit in the future so I can clean up and move just what I need over… but good god. I don’t need this headache lol
Secondly, the systems that received compression…
Sega CD - Compressed from 70.9GB to 37.2GB
Sega Saturn - I actually added a WHOLE BUNCH of JP games to the system, but even so… Compressed from 120GB to 80.3
Sony Playstation - CHD easily made the largest impact here, went from 461GB to 266GB
Sony PS2 - Not CHD, but since we discussed compression… I compressed to CSO using the methods discussed previously. I have only compressed the DVD games however. CD still needs to be converted to ISO before compressing to CSO. That aside, this system went from 2.74TB to 1.55TB
In it’s current state I have the entirety of HyperSpin, RocketLauncher, RetroArch, and the games from every major console release (barring JP Only systems) [Every cartridge title ever, and no disc-based shovelware] ALL taking up about 2.95TB on a “4TB” portable drive (It’s really 3.63, you know how it goes) Portable also means I can play this on any PC I hook it to (I’m using it at work as I write this hahahaha)
So, barring the emergence of a wonderful Xbox emulator? I’d say I’m all set on space here now.
Thanks to everyone for their input and help. I hope this kind of gives a good template for others considering compression as well. CLEARLY it makes a massive difference.