[CentOS] wich apc ups?

[Stephen Harris]

On Tue, May 29, 2007 at 07:33:39PM +0200, Euroka wrote:
> I want to buy a UPS wfor a PE2800 but I'm mnot sure wich one to choose. is
> 1000 VA enough or do I need the 1500 VA version?

The size you want depends on two things:
  1) Must be powerful enough to drive all the equipment you want
  2) How long you want to survive on battery

I have a 1500VA UPS powering the following equipment

  Pentium D dual core 3Ghz, 5 hard disks, 2Gb RAM
  Pentium 4 2.4Ghz, 2 hard disks, 1 Gb RAM
  Pentium III 800Mhz, 4 hard disks, 1Gb RAM
  AMD 2500, 1 hard disk, 1Gb RAM
  Celeron 1200, 1 hard disk, 512Mb RAM
  Sun Ultra 5, 1 hard disk, 256 RAM
  19" LCD display
  router, cable-modem, switch etc etc
  KVM

The monitor is currently in standby mode.  "apcaccess" says
  LOADPCT  :  70.0 Percent Load Capacity
  BCHARGE  : 100.0 Percent
  TIMELEFT :   7.2 Minutes

Basically I'm using it to protect me from momentary outages, not from
long term failures.  7 minutes is long enough for APCupsd to shutdown
the machines.

Hmm... I might need to get a second one, soon!  Or else get my act
together and _use_ the Pentium D machine and virtualise some of the
others :-)

-- 

rgds
Stephen