
Further Considerations
Extended runtimes
Symmetra Extended Run Frames (SYRMXR4B4) can be added to the Symmetra RM UPS for up to 4
hours of runtime. These frames are 4U high and are easily added via a hot-installable connector. Up
to seven of these Extended Run Frames can be added to any Symmetra RM UPS. Each SYRMXR4B4
will provide an additional 30 minutes of runtime for the configurations described above.
Multiple switches
Many customer configurations will involve multiple switches in the same equipment room. There are
different methods of providing protection for this scenario including one UPS per switch or one UPS
for the entire room. To size one UPS for multiple switches, add up the total watt rating and APC’s
web-based sizing guide can specify the correct UPS configuration.
Other configurations
Symmetra RM UPS is only one possible choice for providing power protection. Symmetra’s scalable
N+1 redundant design and user-serviceability make it a good first choice for Catalyst Switches.
Certain customers may require different features from their UPS. Some customers for example may
insist on separate UPS and separate power feedsfor each Catalyst power supply. Others may not
require any redundancy and just want the most basic UPS that will support the load for five minutes.
HVAC
IP Telephony switches utilizing inline power port technology require much more power than usually
required in an equipment room for data switches. A direct result of this is a much higher heat loss.
This generates a need for good environmental control and ventilation.
Racks
Many of these switches will be replacing current data routers and other networking equipment. These
current devices are typically found in two post racks with small weight bearing capacity. The
Symmetra UPS with extended runtime combined with a couple Catalyst Switches would far exceed the
typical weight capacity of these racks. This plus the heat considerations make a two thousand pound
rated four-post open rack a consideration to replace the older racks.
If the customer insists on retaining the two-post racks, APC can provide this customer with two-post
mounting kits or floor mounting kits with casters for the Symmetra RM UPS Family.
Other voltage areas
Customers deploying Cisco equipment in areas with other voltage requirements (i.e. 230V, 50 Hz) will
need different Symmetra skus. The following table serves as a directreplacement for the Symmetra
RM UPS part numbers described in the document above.
Cisco Switch 208/120V 60 Hz 230V 50 Hz 200/100V 60 Hz
4006 SYH6KNRMT-P1 SYH6KNRMI SYH6KNRMJ-P1
6509 SYH6KNRMT SYH6KNRMI SYH6KNRMJ
6513 SY12K12RMT SY12K12RMI SY12K12RMJ
all SYRMXR4B4 SYRMXR4B4I SYRMXR4B4J
4006 SYTF2 N/A SYTF2J