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2. Rack Installation Specifications
Rack Installation Requirements
■
Installing Three DEs for Each Node
This section describes the required (estimated) length of cable for configuring three DEs connected to each node
with 12 CEs installed.
•
Be sure to use a 1.1m cable to connect between the FE and CE#0.
A 3m or longer cable is required between the FE and CE#1 to CE#3 that are installed in the same rack.
•
A 10m or longer cable is required between the FE and CE#4 to CE#B in the expansion rack (or Expansion
•
Rack#0).
Table 16
Required Cable Length/Quantity (When Three DEs Are Connected per Node)
Cable length
Frontend cables (1.1m/3m)
Frontend cables (3m/3m)
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 40
Example of a Frontend Cable Connection (When Three DEs Are Connected for Each Node in a 19-
inch Rack [2000mm])
Base rack
CE#3
DE
DE
DE
CE#2
DE
DE
DE
CE#1
DE
DE
DE
CE#0
FE
PDU#7
PDU#6
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 three sets
Up to eight sets
Expansion rack#0
Expansion rack#1
DE
DE
DE
DE
CE#A
DE
DE
CE#6
DE
DE
DE
DE
DE
CE#9
DE
DE
CE#5
DE
DE
DE
DE
CE#8
DE
DE
CE#4
DE
DE
DE
DE
CE#7
DE
PDU#7
PDU#6
PDU#5
PDU#4
PDU#1
PDU#3
PDU#1
PDU#0
PDU#2
PDU#0
56
Connection destination
For CE#0
For CE#1 to CE#3
For CE#4 to CE#B
Expansion rack#2
DE
DE
DE
CE#B
DE
PDU#7
PDU#6
PDU#5
PDU#4
PDU#3
PDU#1
PDU#2
PDU#0
: Management cable (for FE to CE#0 connections, 3m)
: Management cable (3m)
: Management cable (10m)
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