BN1250LCD

Anonymous user · ‎2021-06-28

Is there any reason I should not use the Back-UPS model with a server. The wattage is at about 50% of the amount rated for this model.

BillP · ‎2021-06-28

Good day Matt, thank you for contacting the APC Discussion Forums.

There are many reason why we do not recommend using a server on a Back-UPS and I'll list everything that I knew. For the others please feel free to share your inputs.
* Power Factor Corrected Power Supplies - A PFC power supply utitlizes/uses all the power that is being fed into it, in other words whatever that comes in goes out making it a highly efficient device. Please take a look at this [APC Knowledge Base|http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=8883&p_created=1193079387&p...]
* Using an APC Smart-UPS, customers would have more choice when it comes to monitoring the UPS and configuring graceful shutdowns on their PCs.
* Step Approximated Sine Wave - For some servers the kind/type of sine wave is important, although the Back-UPS produces a pure sinewave while it is online once it transfer to battery it provide a step approximated sine wave in which some servers does not like. Smart-UPS provides a better voltage conditioning and pure sinewave whether online or on battery.
* Transfer Time - This is the amoount of time that a UPS needs to switch from one state to the other, Back-UPS takes about 4-8 milliseconds while for Smart-UPS depending on the model offers from 2-4 to 0 milliseconds of transfer time. Although this are just very quick transfer times, it can cause the load to reboot.
JonPro

See Answer In Context

BillP · ‎2021-06-28

Good day Matt, thank you for contacting the APC Discussion Forums.

There are many reason why we do not recommend using a server on a Back-UPS and I'll list everything that I knew. For the others please feel free to share your inputs.
* Power Factor Corrected Power Supplies - A PFC power supply utitlizes/uses all the power that is being fed into it, in other words whatever that comes in goes out making it a highly efficient device. Please take a look at this [APC Knowledge Base|http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=8883&p_created=1193079387&p...]
* Using an APC Smart-UPS, customers would have more choice when it comes to monitoring the UPS and configuring graceful shutdowns on their PCs.
* Step Approximated Sine Wave - For some servers the kind/type of sine wave is important, although the Back-UPS produces a pure sinewave while it is online once it transfer to battery it provide a step approximated sine wave in which some servers does not like. Smart-UPS provides a better voltage conditioning and pure sinewave whether online or on battery.
* Transfer Time - This is the amoount of time that a UPS needs to switch from one state to the other, Back-UPS takes about 4-8 milliseconds while for Smart-UPS depending on the model offers from 2-4 to 0 milliseconds of transfer time. Although this are just very quick transfer times, it can cause the load to reboot.
JonPro