Fujitsu ETERNUS DX60 S3 Handbuch zur Standortplanung - Seite 33
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Chapter 2
Rack Installation Specifications
2.1
Rack Installation Requirements
2.1.2
Cable Connection
2.1.2.1
Cable Connection (Power)
When connecting the power cords (AC cables) of the enclosures to the power distribution units, make sure to
secure the necessary number of power outlets within the same rack. Avoid exceeding the power cord length
and connecting power cords to different racks.
Figure 2.1 AC Cable Connection
AC cable
:
CE:
Controller Enclosures
DE:
Drive Enclosures
PDU:
Power Distribution Unit
2.1.2.2
Cable Connection (Between Enclosures)
Reverse cabling can be used to connect enclosures in the ETERNUS DX when the ETERNUS DX is configured
with two controllers. For reverse cabling, the connection destination for controller 1 (CM#1) must be the last
drive enclosure.
Longer cables may be required according to the installation locations of enclosures that are used in the same
rack or the installation locations of enclosures that are used in multiple racks.
The cable lengths that are required between enclosures should be taken into consideration when enclosure
installation locations are being determined.
For drive enclosures, the length of the provided cables between enclosures is 0.75m.
For extended connections, 2.5m and 3.5m cables are available.
The following guideline shows how the mini SAS HD cables between enclosures should be used according to
their cable length.
Table 2.2 Usage of Cables for Connecting Enclosures
Cable length
0.75m
2.5m
3.5m
Base rack (rear)
CE
PDU
Usage
Provided with drive enclosures and used for connecting controller enclosures.
Used as extension cables when the lengths of the provided cables are not sufficient.
•
Used for reverse cabling when two or more drive enclosures are installed.
•
Used as extension cables for connections between the racks.
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Expansion rack
DE
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