Supero 2U Twin3 2015TA-HTRF, User Manual

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Chapter 1: Introduction
1-5
1-4 2U Twin 3 : System Notes
As a 2U Twin
3
con fi guration, the 2015TA-HTRF is a unique server system. With
eight system boards incorporated into a single chassis acting as eight separate
nodes, there are several points you should keep in mind.
Nodes
Each of the serverboards act as a separate node in the system. With two nodes
housed in each of four hot-swap trays, two may be powered off and on without af-
fecting the others. In addition, each tray with its two nodes 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 720W 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 2015TA-HTRF supports the use of 24 SATA drives. A single back-
plane works to apply system-based control for power and fan speed functions, yet
at the same time logically connects a set of three drives to each serverboard. Con-
sequently, RAID setup is limited to a three-drive scheme (RAID cannot be spread
across all 24 drives). See the
Drive Bay Installation/Removal section in Chapter 6
for the logical hard drive and node con fi guration.