Advantech ASR-5300I Series, Руководство пользователя

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19 ASR-5300I Series Hardware User Manual
Chapter 2
H
ardware
Installation
MUX Board: As shown below, Controller A (1) and Controller B (2) are connected to
the backplane (3). With a MUX board (4) paired to the hard drive (5), data signals are
able to switch between the signal ports of Controllers A and B (indicated by the blue
arrow/dotted line). Under normal circumstances, the Controller B signal port is in
standby mode (6).
2.5.2 SAS Interface
The SAS interface features a dual-ported connectivity with pins on both sides of its
connector that include SAS primary links
(1) , a power link (2), and underneath that,
SAS secondary links (3) . The SATA drives have only one port that includes the SATA
physical links (4) and the power link (5) . In a redundant-controller system, the
MUX-enabled drive trays must be separately purchased and applied.
Single-controller JBODs do not require a MUX kit.