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SUPERSERVER 2027PR-DC0R/DC0FR/DC0TR USER'S MANUAL
1-5 2U Twin: System Notes
As a 2U Twin confi guration, the 2027PR-DC0R/DC0FR/DC0TR 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 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 1280 Watt power supply is 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.
SAS Backplane/Drives
As a system, the 2027PR-DC0R/DC0FR/DC0TR supports the use of twenty-four (24)
SAS/SATA drives (twelve per serverboard). A single SAS/SATA controller card works
to apply system-based control for logically connecting a set of eight SAS3 and four
SATA3 drives to each serverboard. Consequently, RAID setup is limited to a twelve
drive scheme for each node (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 confi guration.
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