SC200/SC220 Expansion Enclosure EMM Features and Indicators
The SC200/SC220 includes two enclosure management modules (EMMs) in two interface slots.
Figure 18. SC200/SC220 Expansion Enclosure EMM Features and Indicators
Item
Name
Icon
Description
1
System status
indicator
Not used on SC200/SC220 expansion enclosures.
2
Serial port
Not for customer use.
3
SAS port A (in)
Connects to a storage controller or to other SC200/SC220
expansion enclosures. SAS ports A and B can be used for either
input or output. However, for cabling consistency, use port A as
an input port.
4
Port A link
status
•
Green
: All the links to the port are connected
•
Amber
: One or more links are not connected
•
Off
: Expansion enclosure is not connected
5
SAS port B
(out)
Connects to a storage controller or to other SC200/SC220
expansion enclosures. SAS ports A and B can be used for either
input or output. However, for cabling consistency, use port B as
an output port.
6
Port B link
status
•
Green
: All the links to the port are connected
•
Amber
: One or more links are not connected
•
Off
: Expansion enclosure is not connected
7
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
About the SC4020 Storage System
27
