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.
For
FlashSystem 9500, the system supports up to two 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
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.