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2
1-4
2U Twin
: System Notes
2
As a 2U Twin
confi guration, the 5026Ti-HTRF is a unique server 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 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
The server has an additional 920W power supply module (two total) for power
redundancy. If a power supply module fails the other backup module will keep the
system running until it can be replaced.
SATA Backplane/Drives
As a system, the 5026Ti-HTRF supports the use of twelve SATA drives. A single
backplane works to apply system-based control for power and fan speed func-
tions, yet at the same time logically connects a set of three SATA drives to each
serverboard. Consequently, RAID setup is limited to a three-drive scheme (RAID
cannot be spread across all twelve drives). See the Drive Bay Installation/Removal
section in Chapter 6 for the logical hard drive and node confi guration.
Chapter 1: Introduction
1-5
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