Table 2: Reference data center configuration.

Parameter Value

Number of servers per rack ( ) 48
Number of ToR per HOS edge node ( ) 64
Number of HOS edge nodes ( ) 32
Number of wavelengths per fiber ( ) 64
Number of servers in the data center ( ) 98,304
Intrarack traffic ratio (IR) 40%
Traffic distribution Lognormal
Network load 65%, 80%