Enclosures are rack-mounted hardware that contain several components
of the system. Enclosures can be used to extend the capacity of the system. The term enclosure is also used to describe
the hardware and other parts that are plugged into the enclosure.
When enclosures are cabled together to form
the system, each enclosure is assigned a unique enclosure ID. However, you can change an enclosure
ID at a later time.
The system has two different types of
enclosures: control enclosures and expansion enclosures. A control enclosure manages
your storage systems, communicates with the host, and manages interfaces. In addition, a control
enclosure can have multiple attached expansion enclosures, which expand the available
capacity of the existing control enclosure. The
system supports up to four control enclosures and up to two chains of SAS expansion enclosures per
control enclosure.
On
each SAS chain, the systems can support up to a SAS chain weight of 10. Each 5U
expansion enclosure adds a value of 2.5 to the SAS chain weight. Each 2U
expansion enclosure adds a value of 1 to the SAS chain weight. For example, each of the following
expansion enclosure configurations has a total SAS weight of 10:
- Four
5U
enclosures per SAS chain
- Ten
2U
expansion enclosures per SAS chain
- Two
5U expansion enclosures and five
2U expansion enclosures
per SAS chain
Enclosure objects report the connectivity of the
enclosure.
To access information about the enclosure in
the management GUI, select . On the System - Overview page, click the directional arrow
next the enclosure that you want to display. From the Enclosure Details page,
select Enclosure Actions to complete tasks for that enclosure. To display information about the canister in the command-line interface, use the
lsenclosure command.