Hi, 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? 1) APC Smart-UPS 1000 VA Black SMART UPS 1000 VA BLACK 1000 VA LINE-INTERACTIV [SUA1000I] 2) Power Supply Apc-ups 1500va Floorstand Incl Control Cable Usb And Com Port Output Power 980w Other suggestions are also welcome As long as they can talk to the apcd service of that centos 4.4 box. euroka -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20070529/a4a22318/attachment.html>
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
Euroka wrote:> Hi, > > 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? > > 1) APC Smart-UPS 1000 VA Black SMART UPS 1000 VA BLACK 1000 VA > LINE-INTERACTIV [SUA1000I] > 2) Power Supply Apc-ups 1500va Floorstand Incl Control Cable Usb And > Com Port Output Power 980w > > Other suggestions are also welcome As long as they can talk to the > apcd service of that centos 4.4 box. > > euroka > ------------------------------------------------------------------------ > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >Euroka, Generally, bigger is better. 1500 VA is certainly within the capability of a 15 AMP typical US wall outlet. Bob...
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?That probably depends on how many drives you have installed (along with how much run-time you want, and how much you want to pay for replacement batteries every few years). There's also the option of getting a 1500VA model (APC Smart-UPS 1500VA Silent Alarm SUA1500X413) with a silent alarm, and I'm not sure whether they make it in a 1000VA model. If you have alternate notification methods and dislike the noisy alarms, that might be an option. Our PE2800 is hooked up to a 1500VA unit, has 6 drives installed, and I think it lights up 2 out of 5 load indicators. I don't have current numbers on the amount of runtime that gives us. And there might be one or two other lightweight (KVMs) pieces of equipment attached.