casmang is there any performance benefits in having a Double Stack and host both applications or get two individual Single Stacks?
There's no benefit at all to having 2 Singles compared to 1 Double. The only time I'd recommend 2 Singles is if you need a Single on 2 separate servers.
casmang For what reason would I choose the VPS option over a Double Stack? I am familiar with the stacks but am not sure what the pro/cons are for the VPS instead?
WIth the shared hosting Stack plans, the advertised specs are quotas of resources shared on a very powerful server. So, when you get a Double Stack with 2GB of RAM and 200GB of storage, that full amount of RAM and storage is available for you to use for your applications, databases, and mail.
With the VPS plans, the advertised specs are the total capacity of the server resources. The operating system and hosting infrastructure use some of those resources (typically 750MB-1GB of RAM and ~10GB of storage but it can go up or down depending on server conditions). This means that there are fewer resources available for your own applications.
The low-end VPS are OK if a) you need your own IP address and b) you've got highly optimized apps that don't need a lot of CPU, RAM, and storage. Also, on VPS we're able to install packages that are available in the OS package repositories but are not part of our normal managed buildout.
The three tiers of shared hosting (ie the Stack plans) offer the best choice for high performance when your total RAM usage is <2GB.
The higher tiers of VPS are the best choice for when you need more than 2GB of RAM.
The dedicated plans are the best choice for when you need a ton of RAM and storage along with bare-metal performance.
