Table 18 Frontend Cable Connection Usage (19-Inch Racks [2000Mm] With Unix/Industry Standard Server Connec- Tions) - Fujitsu ETERNUS DX8100 S3 Site Planning Manual

2. Rack Installation Specifications
Rack Installation Requirements
For 19-inch Racks (2000mm) with UNIX/Industry Standard Server Connections
This section explains how the frontend cables should be used and how many frontend cables are required ac-
cording to the cable length.
This section describes the connection application when a rack for an ETERNUS DX is used.
The required cables may differ depending on the racks that are used.
The installation location for each enclosure differs depending on the number of controller enclosures, and the
number of drive enclosures on a single node. The required cable length changes since the distance between the
frontend enclosure and the controller enclosure is proportional to the number of controller enclosures, and the
number of drive enclosures on a single node.
In this section, the frontend enclosure is referred to as "FE", the controller enclosure is referred to as "CE", and the
drive enclosure is referred to as "DE".
Table 18 Frontend Cable Connection Usage (19-inch Racks [2000mm] with UNIX/Industry Standard Server Con-
nections)
Cable length
(Supplied as standard)
1.1m (QSFP copper cable)
3m (management cable)
(For extensions)
3m (QSFP copper cable)
3m (management cable)
(For extensions)
3m (QSFP copper cable)
5m (management cable)
(For extensions)
10m (QSFP active optical cable)
10m (management cable)
(For extensions)
30m (QSFP active optical cable)
30m (management cable)
FUJITSU Storage ETERNUS DX8100 S3/DX8700 S3/DX8900 S3 Hybrid Storage Systems Site Planning Guide
Usage
The cable used to connect with CE#0 is provided with the base unit.
Make sure to use the supplied cable to connect between the FE and
CE#0.
Used for connections between the FE and the CEs that are installed in
the same rack when following the standard installation rules.
Cannot be used for connection with CE#4 or later. (Make sure to use
the 10m or longer cable.)
Used for connections between the racks when following the standard
installation rules.
Cannot be used for connection with CE#4 or later. (Make sure to use
the 10m or longer cable.)
Used for connections between the FE, and the CE#4 to CE#B when fol-
lowing the standard installation rules.
Used as extension cables when the connection length is more than
10m.
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