Hello I am thinking of buying a 256mb vps would Ispconfig 3 with apache work ok on a 256mb vps without causing any problems? I will be using Debian 6 32bit OS Thanks in advance.
It's a bit light but would work better with nginx instead of apache. Also depends on if want to run "everything" or can do without certain features like no bind for DNS and offload that else where.
256 MB will not work for a full ispconfig 3 setup with mail, dns and web server. The recommended min. RAM size for a full setup is 1GB, personally I would use 2GB+ for a full perfect server setup.