There are certain "house keeping" tasks that a computer does when it shuts down in the "normal" way vs removing power per se. Read Martin's post:
mdyde wrote:I'd strongly advise against 'pulling the plug' on the computer. It's highly likely to lose your settings/combinations/etc. and fairly likely to result in corrupted installations/disks too (especially if you do it with any regularity).
Considering that most servers are carefully protected from any power loss which happens very seldom if ever. Within the protection scheme, the UPS, with battery backup, allows for the servers to shut down in a controlled way. This seldom (if all else fails method) differs from removing the power to shut the computer down routinely.
Powering down, etc via the "Hauptwerk method" should work just fine. But I know of some that do the "pull the plug method" which isn't the good way. Likewise, using a sequenced power start up and shut down is good for all components.
Rgds,
Ed