@girish thank you for the insight. If I am extending the existing drive then I'll make sure to keep it SSD as it already is, I may try HDD if going the first route though. I'll check, this isn't an easy task for extending the existing disk unfortunately, but this may be the better move. Of course the drawback there I guess is I'll be paying for way too much disk space and need to do it all over again if I for example lose one of the clients that are using so much email space (as email is the single biggest consumer on my server right now, by a lot). I'll have to run some tests.