Data Centric Network (Unit 1)

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 Data-Centric Network (Unit 1)

Data Center Types

  • Enterprise - Built, owned, and operated by organizations.
  • Managed Services - Managed by a third party on behalf of an organization
  • Colocation -  Rented space for infrastructure within a data center owned by another organization.
  • Cloud - Services are hosted on the cloud and are off-premise.

Data Center Design

  • Robust - Must be reliable
  • Modular - Modules must work effectively & independently
  • Flexible - Must be easy to scale & use.
  • Standardize - Following protocols & standards
  • Good Habits - Accessible, simple, blueprinted, humane. (Ergonomics)

Data Center Design Criteria

  • Availability - Must not have too much downtime. Frequency of access to data.
  • Infrastructure Tiers - Decides the level of availability of your data center to clients.
  • Rooms - Server room, storage unit room, cabling room, cooling systems room, etc.
  • Life Span - Expected time of availability possible of a data center.
  • Budget - Better to outsource or to build your own data center costing millions of dollars.

Data Center Components

  • Physical Space - The blueprint or design of the data center. Space utilization of every sector.
  • Raised Floor - Cooled air circulation, electrical whips & data cabling routed through these.
  • Electrical Unit - All power-related facilities.
  • Standby Power - Back-up power systems to take the immediate load.
  • Cabling - Cabling involving fire systems, data center servers, fiber cable channels, etc.
  • Cooling - Chiller, air handlers, & cooling systems to regulate ambient temperature.
  • Fire Suppression - To detect and extinguish the fire.

Content-Centric Network

Components
  • Reliability & Flow Control - Each packet is independent & a balance is maintained at each hop.
  • Naming Content -  Hierarchical naming content with flexible format. Can be components or registers.
  • Routing - OSPF or BGP for communication but no spanning trees with loops and multipathing.
  • Content-Based Security - Part of the content that authenticates the bindings by signing.
  • Network Security - Cue to the content-oriented & interest-based data movement, it's safe.

CDN



CDN deals with content passing from the cache rather than directly accessing the server. The most frequently requested content of a region is stored in the region cache, this way, the users directly access the cache which reduces latency. If this did not exist, then the users would have to access the server which would go through too much load and a lot of latency is possible,



Modern Data Center - Requirements

  • Flexibility
    • Space - Ample space between servers and rooms.
    • Temperature - Maintaining ambient and standardized temperature.
    • Power - Load balancing between servers.
    • Cables - Proper cabling with the properly documented manual.
    • Standards - Protocols for flexibility management.
  • Scalability
    • DC Modularity - Long-term sustainability solution.
    • Elastic Capacity - Add or remove virtual processors and memory.
    • Object Storage - Traditional File Storage.
  • Environment Controls
    • Temperature
    • Humidity
    • Electricity
    • Security
  • Electrical Systems
  • Backup - Recovering stored data in case of disaster or server breakdown.
    • Data Retrieval - Possess multiple copies of the data.
    • Disk-to-tape and cloud - Manual backup process keeps from hacking & data access.
    • Recovery - Mobile devices backup and recovery.
  • Flooring - Raised floor or overhead floor for cabling, air currents & fire detection systems.

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