Lenovo D1212, Hardware Installation And Maintenance Manual

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Figure 36. A Disk Drive In Carrier (DDIC)
The 2.5" SAS solid-state drive with 3.5" adapter is supported.
The drive carrier has a single amber LED which is lit when the drive has a fault.
Enclosure Management
SBB ESMs actively manage the enclosure. Each module has a SAS expander with its own storage enclosure
processor (SEP) that provides a SES target for a host to interface to through the ANSI SES Standard. If one
of the modules fails, the other module continues to operate.
Refer to a module’s specification or the SES interface specification for definitions of the module’s functions
and its SES control.
Management of the enclosure is also performed by GEM firmware through the Ethernet port (10/100Base-TX)
of each ESM. The GEM firmware provides a built-in command line interface (CLI) for interacting with the
enclosure. See “Overview of GEM” on page 97 for more information.
Chapter 2
.
System Overview
31