3Com SuperStack 3, User Manual

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18 C
HAPTER
1: I
NTRODUCING THE
A
DVANCED
RPS
Figure 7 Type 3 DC ‘Y’ Cable (3C16077)
Using the Advanced RPS
There are several ways you can use the Advanced RPS to benefit your
network and protect against internal PSU failure on your SuperStack
units. These are detailed below.
Standard Usage
Connect your SuperStack unit directly to the power module using the
standard DC cable supplied with the module (see Figure 8). The
power module acts as a highly reliable power supply that can be
swapped in the event of a failure.
CAUTION: Do not connect your SuperStack units to the AC mains
supply.
Figure 8 Advanced RPS Standard Usage Configuration
Managed Redundancy
Managed Redundancy can only be used with a SuperStack unit that
has the auto-enable feature. For units that support this feature, see
Appendix C.
16070ug4.bk.book Page 18 Thursday, December 14, 2000 12:17 PM