Chapter 1 Introduction
28
Storage Center SC8000 Controller Deployment Guide
EN-SASx6x12/24 SBB Module Features and Indicators
SAS
enclosures
include
two
Storage
Bridge
Bay
(SBB)
IO
modules
in
two
SBB
‐
compliant
interface
slots.
Each
SBB
IO
Module
includes
an
EEPROM
that
holds
data
describing
the
function
and
capability
of
the
SBB
module.
Each
SBB
module
can
discover
the
type
and
capabilities
of
its
partner
SBB
module
within
the
enclosure.
Incompatible
configurations
result
in
an
enclosure
system
alarm.
Each
port
has
four
separately
arbitrated
physical
lanes.
A
green
LED
indicates
the
status
of
each
lane.
The
IO
Module
and
Fault
indicators
provide
status
as
described
below.
Figure 27. IO Module Indicators
Item Name
Icon
Description
1
IO
Module
indicator
On
Steady
:
Normal
operation
2
IO
Module
fault
indicator
On
:
IO
module
error
3
SAS
port
A
(in)
Connects
to
other
enclosures
4
Lane
LEDs
—
•
Solid
Green
:
Connected,
No
activity
•
Flashing
:
Activity
5
SAS
port
B
(out)
Connects
to
other
enclosures
6
SAS
Port
C
The
C
‐
port
always
connects
to
the
controller.
1
2
4
6
3
5
