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User Guide
1. Overview of the Disk Expansion Unit
This section describes the overview of the Disk Expansion Unit.
DISK EXPANSION UNIT SPECIFICATIONS
Item
External Interface
HDD Capacity
Physical dimensions
Weight
Power Voltage
Power Current (Maximum)
Power Consumption
Environmental
condition
DISK EXPANSION UNIT FEATURES
Support for up to 12 hard disk drives.
Serial-Attached SCSI interface support.
Hot-plug hard disk drives, fan modules, and power units can be replaced without
shutting down the Disk Expansion Unit.
High availability
Redundant fan configuration
The Disk Expansion Unit features a redundant fan configuration. This allows the
Disk Expansion Unit to be used as usual even if one of the fans is defective.
Redundant power unit configuration
To achieve a redundant power unit configuration, use the optional redundant power
unit. In this case, the Disk Expansion Unit can be used as usual if one of the
power units is defective.
In general, the Disk Expansion Unit does not feature the redundant power unit
configuration. In this case, the failure of the power unit makes the Disk Expansion
Unit unavailable.
Monitoring feature
Status LEDs indicate the status of the Disk Expansion Unit.
Serial Attached SCSI
12 (max)
444mm(w)×561mm(d)×88mm(h)
27.4kg (with 12 HDD)
21.4kg (without HDD)
100-240V AC (50-60Hz)
4A@100V AC, 1.6A@240V AC
400W
Temperature 10 - 35 degrees C
Operating
Humidity
Temperature -20- 60 degrees C
Non-operating
Humidity
Specifications
20 - 80 %
20 - 80 %
20
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Remarks
ANSI T10 SAS 1.0/1.1
Compliant.
2U of standard
19-inches rack
Under load
No condensation
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