Dell SC400 Owner's Manual - Page 10
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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
1
SAS port status
(1–4)
2
EMM status
indicator
3
SAS ports 1–4
(Input or
Output)
4
USB Mini-B
(serial debug
port)
5
Unit ID display
10
Icon
Description
•
Green: All the links to the port are connected
•
Amber: One or more links are not connected
•
Off: Expansion enclosure is not connected
•
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
Provides SAS connections for cabling the storage controller to
the next expansion enclosure in the chain. (Single Port,
Redundant, and Multi-chain Configuration).
Not for customer use.
Display the enclosure location in the SAS Chain.
About the SC400/SC420 Expansion Enclosure