I recently moved my multisite network to a VPS server. I am just in the development phase, but I bought the minimum 2 nodes with 1.2GHz, 752MB RAM, 20GB Storage and 2TB Bandwidth.
Recently I was being told that I am out of memory and I had to buy 512MB RAM. I had concentrated on Storage and Bandwidth and I have no idea about RAM.
They told me my 752 MB RAM finished because I have CPanel installed (around 500 MB) and Wordpress multisite with many plugins and stuff.
Is this normal. What is exactly RAM. When I asked what happens when I have 4 cPanel instead of one, they said extra cPanels wont affect the RAM. So what is this exactly. If a multisite has many subsites, how much affect does this have on RAM. Or is is a constant about the initial software installed. Also I wonder if there is need for more RAM when the amount of visitors rise, as for now the websites were not even online.
This question is becoming quite long, but I really would like to learn if 1264MB RAm, 20GB Storage, 2TB Bandwidth server enough for a one Multisite network with 100 multisites client websites little content. Also how much page visits is approximately possible with 2 TB bandwidth.
Thanks a lot.