Sun Fire Cabinet Redundant Transfer Switch (RTS)
There may be up to two redundant transfer units (RTUs) in a Sun Fire™ cabinet.
The RTUs are located in the bottom of the cabinet in the front or rear. The Sun Fire
6800 will always have two RTUs and four RTSs (two each) mounted in its cabinet.
Each RTU assembly contains one pre-installed redundant transfer switch (RTS)
module. The second RTS is for redundancy and is optional.
Note – If two separate AC power sources (primary and secondary) are not
available, and a single AC power source is used, connect ONLY RTS0 to the power
source. Connecting RTS0 and RTS1 to a single AC power source (even if separate
circuit breakers are used) is not supported and will adversely affect reliability