Item
Name
2
Status indicator
3
Identification
button
4
Unit ID display
5
Hard drives
SC4020 Storage System Back-Panel Features and Indicators
The back panel of the SC4020 contains the storage controller indicators and power supply indicators.
Figure 8. SC4020 Storage System Back-Panel View
Item
Name
1
Power supply/
cooling fan module
(PSU) (2)
2
Battery backup unit
(BBU) (2)
3
Storage controller
About the SC4020 Storage System
Icon
Description
•
On steady green: At least one power supply is providing
power to the storage system
Lights when at least one power supply is supplying power to
the storage system.
•
Off: No power
•
On steady blue: Power is on and firmware is running
•
Blinking blue: Storage system is busy booting or updating
•
On steady amber: Hardware detected fault
•
Blinking amber: Software detected fault
Lights when the storage system identification is enabled.
•
Off: Normal status
•
Blinking blue: Storage system identification enabled
—
Displays the storage system identification number. The default
value for a new storage system is 01.
—
Can have up to 24 2.5-inch SAS hard drives.
Icon
Description
—
Contains a 580 W power supply and fans that provide cooling
for the storage system.
—
Allows the storage controller to shut down smoothly when a
loss of AC power is detected.
—
Each storage controller contains:
•
Back-end ports: Two 6 Gbps SAS ports
17