FSP has launched its new Twins Series of PSUs. As indicated by the name, these PSUs contain dual hot-swappable power supply modules. They are said to be ideal for startup companies' web servers, mail servers, or home servers where you wish to benefit from the security of two independent PSU modules in one. Furthermore the Twins PSUs allow such users to avoid upgrading to more costly PC form factors.
The two models from the Twins Series differ only in wattage output. As indicated by their model names they are 500W and 700W rated units. Each PSU contains two independent power modules with its own power adaptor. In normal operation the Twins share the load between their two modules (for maximum efficiency and stability) but should one fail "the other automatically takes over as a clean fail safe". Thanks to the hot-swap functionality you can then easily swap the dud PSU module without any downtime.
FSP makes it easy to determine which, if any, PSU module fails. The LED Alarm Guard and control software alerts users to PSU problems. If a module fails its LED will flash in red to indicate which unit needs replacing and an alarm sound will make you aware of this issue. A PSU module with a flashing green LED is working fine, and a flashing yellow LED indicates a problem. Twins connect to a system USB header to work with the FSP Guardian software to monitor and control your PSU modules. Users can see input, output, efficiency, and other metrics in real time, or review up to seven days of past data. The PSUs are digitally controlled and provide low noise and ripple. They are rated for 24 hour operation even in environments as warm as 50°C. OCP, OVP, SCP, and FFP protections are implemented.
As indicated in the intro, the ATX PC chassis you currently own is OK for equipping with an FSP Twins PSU. There are both ATX 12V and EPS 12V connectors provided for maximum motherboard compatibility. Flat ribbon cables are provided to power other system components.
The "remarkable power density" on offer doesn't sacrifice efficiency. These PSUs are 230V 80PLUS Gold certified with 90 per cent peak efficiency at 50 per cent load.