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2. Rack Installation Specifications
Rack Installation Requirements
■
Installing 15 DEs for Each Node
This section describes the required (estimated) length of cable for configuring 15 DEs connected to each node
with four CEs installed.
•
Make sure to use a 1.1m cable to connect between the FE and CE#0.
A 3m or longer QSFP cable and a 5m or longer management cable are required between the FE and CE#1 in
•
the first expansion rack (or Expansion Rack#0).
•
A 10m or longer cable is required between the FE, and CE#2 and CE#3 in the second and later expansion racks
(or Expansion Rack#1 and Expansion Rack#2).
Table 20
Required Cable Length/Quantity (When 15 DEs Are Connected per Node)
Cable length
Frontend cables (1.1m/3m)
Frontend cables (3m/5m) (*2)
Frontend cables (10m/10m) (*2)
*1: The required quantity varies depending on the number of CEs that are to be connected.
*2: This cable is required when racks are placed next to each other. Use a cable with the required length according to the rack arrangement
and the cabling.
Figure 43
Example of a Frontend Cable Connection (When 15 DEs Are Connected for Each Node in a 19-inch
Rack [for GS, 2000mm])
Base rack
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
CE#0
FE
SCCI
PDU#5
PDU#4
PDU#1
PDU#3
PDU#0
PDU#2
: QSFP copper cable (for FE to CE#0 connections, 1.1m)
: QSFP copper cable (3m)
: QSFP active optical cable (10m)
Quantity (*1)
One set
Up to one set
Up to two sets
Expansion rack#0
Expansion rack#1
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
CE#1
DE
DE
PDU#5
PDU#4
PDU#1
PDU#3
PDU#1
PDU#0
PDU#2
PDU#0
62
Connection destination
For CE#0
For CE#1
For CE#2 to CE#3
Expansion rack#2
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
DE
CE#2
CE#3
DE
PDU#5
PDU#5
PDU#4
PDU#4
PDU#3
PDU#1
PDU#3
PDU#2
PDU#0
PDU#2
: Management cable (for FE to CE#0 connections, 3m)
: Management cable (5m)
: Management cable (10m)
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