Connecting SAS cables to cascaded disk enclosures
To cascade additional disk enclosures from the disk enclosure that is connected to the server or
controller enclosure, use standard mini-SAS cables.
As additional disk enclosures are connected to the first disk enclosure, they are assigned a box
number. The assigned box number is displayed on the 7-segment display on the rear of the disk
enclosure.
IMPORTANT:
•
When connecting this disk enclosure in a single-domain environment, only the top I/O module
(I/O module A) in the disk enclosure is supported for use.
•
The number of supported cascaded disk enclosures varies per disk enclosure model and
installation environment. For more information, see the QuickSpecs for the disk enclosure,
controller, or controller enclosure, available on the Hewlett Packard Enterprise storage
website:
http://www.hpe.com/info/storage
Observe the following guidelines:
•
Only use supported SAS cables with mini-SAS connectors.
•
Use provided color clues on the disk enclosure when cabling cascaded disk enclosures; for
example, connect “green” ports to “green” ports (connect I/O module A on one disk enclosure
to I/O module A on the additional disk enclosure).
Note the following when connecting cables:
•
P1 on the disk enclosure I/O module is treated as the SAS “in” port.
•
P2 on the disk enclosure I/O module is treated as the SAS “out” port.
•
In single-domain configurations, one cable path is created between the host, the primary
disk enclosure, and additional cascaded disk enclosures. (Shown)
•
In dual-domain configurations, two cable paths are created between the host, the primary
disk enclosure, and additional cascaded disk enclosures.
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Installation
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