How much disk space - adding OA

[elvinjones]

Hi, I have Arma 2 and am wondering if I install OA, if it installs everything afresh or if there is significant hard drive space/files overlap. I see specs say 10-20 gigs, but don't know if there's a difference between OA standalone vs already having Arma 2 installed.

I have about 1.5tb of disk space, but am left with 300gigs afters doing a few albums recording 12+ simultaneous audio tracks.

[tom3kb]

@<hidden>
OA need about 8-10Gb alone.
But if you wont CO=A2+OA you need ~15-20GB