[CentOS] [OT] ups advice

Thu Apr 14 16:49:40 UTC 2011
Brunner, Brian T. <BBrunner at gai-tronics.com>

centos-bounces at centos.org wrote:
> On Thu, Apr 14, 2011 at 5:06 PM, admin lewis
> <adminlewis at 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 ?

UPS and Power Supplies are not all the same.  
If the UPS has a stepped voltage output (not smooth sine wave like the
local public grid has) in large enough steps to mess up the power
supply, you wind up with no UPS in effect.

CLEARLY if there are enough steps to the stepped output of the UPS
(which depends on the UPS brand/model), the PC power supply happily will
see it as a sine wave input.  How many is "enough" depends on the power
supply and the load.

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