Figure 31 Sample Data And Management Cabling Among 5U Controllers And Host System Switches - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

The maximum length of any SAS cable for any configuration is 2 m (6.56-ft).
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All SAS cables you connect to expansion modules must be mini-SAS HD cables with SFF-8644 connectors.
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CAUTION Do not create invalid closed loops anywhere along the SAS port cabling configuration. A valid cabling
configuration is directional and does not contain any loops between components already in that cabling configuration. An
invalid closed loop introduces a circular flow into the cabling configuration that can degrade performance or cause failure.
To route 5U enclosure and expansion data cables:
1. Route data and management cables from the host system to the best available controller module port for your
environment.
a. Connect SAS cables from the SAS ports to the host switch or HBA as shown.
b. (Optional) Connect an Ethernet cable from the management port to the host as shown.
4 3 2
0A
8 7
2

Figure 31 Sample data and management cabling among 5U controllers and host system switches

2. Take the following actions to connect Controller 0A to its related expansion modules. The example below has 3 expansion
enclosures directly below the storage enclosure.
IMPORTANT Best practice is to use the expansion Port A for input and Port C for output.
a. Insert a mini-SAS data cable into the left controller, Controller 0A, then connect the other end to SAS port A in the first
expansion enclosure, 1A.
b. Insert a mini-SAS data cable from SAS port C in the first expansion enclosure, 1A, and connect the other end to SAS
port A in the second expansion enclosure, 2A.
c. Insert a mini-SAS data cable from SAS port C in the second expansion enclosure, 2A, and connect the other end to SAS
port A in the third expansion enclosure, 3A.
3. Take the following actions to connect Controller 0B to its related expansion modules.
IMPORTANT Best practice is to use the expansion Port A for input and Port C for output.
a. Insert a mini-SAS data cable into the right controller, Controller 0B, and connect the other end to SAS port A in the
third expansion enclosure, 3B.
b. Insert a mini-SAS data cable from SAS port C in the third expansion enclosure, 3B, and connect the other end to SAS
port A in the second expansion enclosure, 2B.
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Chapter 5 Installation of 5U enclosures
0B
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