Kevin Thorpe wrote:

On Thu, Apr 14, 2011 at 5:06 PM, admin lewis adminlewis@gmail.com wrote:

...

Hi I have a Dell PowerEdge T310 *tower* server.. I have to buy an ups by

apc... anyone could help me giving an hint ?

...

a simple "smart ups 1000" could be enough ?

It depends on how long you want it to run. Your choice is a small UPS to

give your server just enough time to shut down or a big UPS to allow you to

carry on working for some time.

And it depends on what you're trying to deal with: if it's occasional brown or blackouts, or power flickers (let's not talk about Chicago, for example), then you need enough power to provide all it will draw for a couple minutes at most. If you're looking at longer power outages, you'll need something a lot bigger, though one suitable for the above purpose would usually allow it to shut down gracefully; it's not like Linux takes a long, long time to shutdown. <snip>

people have laptops. If you're running big processes on the server then

you need long enough to let them complete or shut down gracefully.

Heh. Depends on your definition of "big processes", says the guy whose users normally are running jobs that run for *days*, if not weeks.

mark