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2U Twin
As a 2U Twin
configuration, the SuperServer 5028TK-HTR/HTTR is a unique server
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system. With four system boards incorporated into a single chassis acting as four
separate nodes, there are several points you should keep in mind.
Nodes
Each of the four serverboards act as a separate node in the system. As independent
nodes, each may be powered off and on without affecting the others. In addition,
each node is a hot-swappable unit that may be removed from the rear of the chassis.
The nodes are connected to the server backplane by means of an adapter card.
Note: A guide pin is located between the upper and lower nodes on the inner chassis
wall. This guide pin also acts as a "stop" when a node is fully installed. If too much
force is used when inserting a node this pin may break off. Take care to slowly slide
a node in until you hear the "click" of the locking tab seating itself.
System Power
Dual 2000 Watt power supplies are used to provide the power for all four
serverboards. Each serverboard however, can be shut down independently of the
other with the power button on its own control panel.
Hard Drive Backplane/Drives
As a system, the SuperServer 5028TK-HTR/HTTR supports the use of 12 hard
drives. A single backplane works to apply system-based control for power and fan
speed functions, yet at the same time logically connects a set of three hard drives to
each of the four nodes. Consequently, RAID setup is limited to a three-drive scheme
(RAID cannot be spread across all 12 drives). See the Drive Bay Installation/
Removal section in Chapter 6 for the logical hard drive and node configuration.
: System Notes
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Chapter 1: Introduction
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