Smart-UPS Series protects your data by supplying network-grade battery backup when power fails. With PowerChute plus software the uninterruptible power supply (UPS) will safely store data and shut down your network operating system before the battery is fully discharged, whether you're there or not.
APC SU2200RMXLNET UPS Overview
Smart-UPS XL 2200VA allow for expanding runtime by simply plugging in additional battery packs.