Dual-Path Connection; Figure 30. Dual-Path Connection - Intel JBOD2312S3SP Hardware Manual

Intel® Storage Server System JBOD2312S3SP Hardware Guide
7.5.3

Dual-path Connection

Dual-path means a host has redundant pathways to the storage device. When any part of the data pathway
to a SAS domain fails, data transfer will not stop. This is one advantage of dual-path connection. Dual-path
implementations cost less than dual-domain SAS implementations but do not provide the full redundancy
like a dual-domain SAS solution.
Figure 30 below shows the dual external mini-SAS HD connectors of the SAS HBA or RAID adapter
connecting to JBOD2000S3SP with two mini-SAS HD cables. Each single controller port incorporates four
SAS lanes for a total maximum throughput of 4800MB/s with SAS 3.0 technology. SATA or SAS hard drive
can be supported. The SAS HBA or RAID adapter can handle either mini-SAS cable disconnection and
maintain the data transfer between the host and JBOD2000S3SP.
4 4

Figure 30. Dual-path Connection

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