Data center network designs “Top of the Rack” vs “End of the Row”

Data center network designs “Top of the Rack” vs “End of the Row”

– Top of rack (ToR) : network access switch is placed on the top of the server rack so servers are connected to the network access switch inside same rack Then each switch is linked to the aggregation switch.

End of Row (EoR): No switch on each rack, so server in the rack connected directly to the end of row aggregation switch.

– In ToR each rack is an independent unit

– In EoR servers acts as a group within the data center. Any issue with the row aggregation switch impacts the complete row of servers.

– ToR design requires more switches but fewer numbers of cables

– EoR design requires fewer switches but more cables

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Source: LinkedIn

Credits: Mr. Hussam ELRawas RCDD®l DCDC®l PMP®l CCNA l DCCA l AOS® l ATD®’s Post