[CentOS] [OT] ups advice

Thu Apr 14 17:06:05 UTC 2011
Bill Campbell <centos at celestial.com>

On Thu, Apr 14, 2011, Brunner, Brian T. wrote:
>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.

We have been using APC UPSs for decades now, and the only major
problem I've seen is batteries swelling in some of the rack-mount
chassis making them difficult to impossible to remove.  By
difficult I mean taking the cover off the UPS to get to the
batteries.  By impossible, taking the cover off reveals that the
construction is such that the batteries won't come out the top.

We lose power fairly frequently here, and need the UPSs to keep
things going long enough to get generator backup started.  I have
found that the APC UPSs really don't like cheap generators.  We
had a week long power outage after the 2001 Clinton Inaugural
windstorm, and I got an inexpensive generator from Sears which
didn't work at all with APC equipment.  We're now using Honda
generators which are very quiet, and have kept things going for
over a week at a time.

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