Dell SC400 Panduan Pemilik - Halaman 11
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Enclosure Failover when Two EMMs are Installed
Control and monitoring of the expansion enclosure elements can be transferred from one EMM to
another in the event of an EMM failure. A failover occurs whenever network communication stops
between an EMM and its peer.
In the event of an EMM failure, the functioning EMM activates the amber status LED of the failed EMM.
The functioning EMM then manages all aspects of the enclosure, including monitoring and controlling
the enclosure LEDs, power supply units, and fans.
SC400/SC420 Expansion Enclosure Drives
Dell Enterprise hard disk drives (HDDs) and Dell Enterprise solid-state drives (eSSDs) are the only drives
that can be installed in SC400/SC420 expansion enclosures. If a non-Dell Enterprise drive is installed, the
Storage Center prevents the drive from being managed.
The drives in an SC400 expansion enclosure are installed horizontally. The drives in an SC420 expansion
enclosure are installed vertically. The indicators on the drives provide status and activity information.
Figure 5. SC400/SC420 Expansion Enclosure Drive Indicators
Item
Name
1
Drive activity
indicator
2
Drive status
indicator
About the SC400/SC420 Expansion Enclosure
Indicator Code
•
Blinking green: Drive activity
•
Steady green: Drive is detected and there are no faults
•
Steady green: Normal operation
•
Blinking green (two times per second): Drive identification is
enabled
•
Blinking green, blinking amber, and then off: Hard disk drive
predicted failure
•
Blinking amber (four times per second): Hard disk drive failure
•
Off: No power to the drive
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