ISPCP working with more machines ?

[kilburn]

Hehe, I didn't see your post asking "WhyTo". There may be a couple of reasons:

- Splitting the database to be on its own host makes sense for two main reasons, especially if your websites use it a lot. First, heavy queries will be processed by the MySQL host, without overloading the webserver's CPU. Second, and usually most important, databases impose a high number I/O operations to the disk. Since rotational disks suffer greatly from this kind of workload, relieving the webserver's disk from these tasks will probably yield a noticeable performance gain.

- The reasoning behind mail processing is similar. Mails also impose a high number of I/O operations. Nevertheless, in this case the gains are even further if you use any kind of antispam/antivirus solution. This is because antispam/antivirus are CPU intensive too, so making them run out of your main server will also free a noticeable amount of computation from it.

- Separating the DNS service doesn't make that much sense for me, as it is typically a low-overhead service (unless you serve thousands of domains). Most stuff is cached (and doesn't even take much ram), so IMHO the only reason to separate the DNS service is if your server's bottleneck is the network itself.

- As I said, separating the actual websites makes no sense at all for me