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. Insert spiffy .sig here: Life is complex: it has both real and imaginary parts. //me ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.Hubbell.com - Hubbell Incorporated**