SC400/SC420 Expansion Enclosure EMM Features and
Indicators
The SC400/SC420 includes two enclosure management modules (EMMs) in two interface slots.
Figure 4. SC400/SC420 Expansion Enclosure EMM Features and Indicators
Item
Name
Icon
Description
1
SAS port status
(1–4)
•
Green
: All the links to the port are connected
•
Amber
: One or more links are not connected
•
Off
: Expansion enclosure is not connected
2
EMM status
indicator
•
On steady green
: Normal operation
•
Amber
: Expansion enclosure did not boot or is not properly
configured
•
Blinking green
: Automatic update in progress
•
Blinking amber (two times per sequence)
: Expansion
enclosure is unable to communicate with other expansion
enclosures
•
Blinking amber (four times per sequence)
: Firmware update
failed
•
Blinking amber (five times per sequence)
: Firmware versions
are different between the two EMMs
3
SAS ports 1–4
(Input or
Output)
Provides SAS connections for cabling the storage controller to
the next expansion enclosure in the chain. (Single Port,
Redundant, and Multi-chain Configuration).
4
USB Mini-B
(serial debug
port)
Not for customer use.
5
Unit ID display
Display the enclosure location in the SAS Chain.
10
About the SC400/SC420 Expansion Enclosure
