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2U Twin System Notes
As a 2U Twin configuration, the 2122TC-DL6RF4 is a unique server system. With
two system boards incorporated into a single chassis acting as two separate nodes,
there are several points you should keep in mind.
Nodes
Each of the two serverboards act as a separate node in the system. As independant
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.
System Power
Two redundant 1280 Watts power supplies are used to provide the power for both
serverboards. Each serverboard however, can be shut down independently of the
other with the power button on its own control panel.
Note: Redundant power availability varies by configuration.
SAS/SATA Backplane/Drives
As a system, the 2122TC-DL6RF4 supports the use of twenty-four SAS/SATA
drives. A single SAS/SATA backplane works to apply system-based control for
power and fan speed functions, and at the same time logically connects a set of
twelve SAS/SATA drives to each serverboard. Consequently, RAID setup is limited
to a twelve-drive scheme (RAID cannot be spread across all twenty-four drives).
See the Drive Bay Installation/Removal section in Chapter 6 for the logical hard
drive and node configuration.
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Chapter 1: Introduction
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