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A Journey to OCP

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1. OCP Meetup
 Amsterdam 20-Feb-2018 2. A Journey to Open Compute Kristian Köhntopp 3. Global Hotel Room Experience Market. 4. Current Situation ● 3 data centers.…
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  • 1. OCP Meetup
 Amsterdam 20-Feb-2018
  • 2. A Journey to Open Compute Kristian Köhntopp
  • 3. Global Hotel Room Experience Market.
  • 4. Current Situation ● 3 data centers. ● rent full rooms, ● tier-3 “uptime” spec.
 ● ~30k machines. ● too many configurations. 4
  • 5. On being boring ● We are a “REP STOSB” company. ● “We are not a technology company.”
 ● Moore’s Law also works backwards. 5
  • 6. Interesting times…
  • 7. Interesting times…
  • 8. A naive projection
  • 9. Incremental Buildout. ● Get space. ● Electrical buildout. ● Racks. ● Switches. ● Chassis. ● Blades. 9 Then finally, automation.
  • 10. Constraints. ● Small rooms. ● Power Limit per Rack. ● Build times. ● Trash issues. ● And plenty of LOM issues. 10
  • 11. Watts over Cores, resulting in 6.4kW/10U
  • 12. 32 machines (40 cores ea) Hadoop
  • 13. ● Underdocumented, multiple access paths.
 ● By default often insecure. ● Outdated Crypto
 (default: none). ● Insecure client requirements. ● Different access methods
 (partial fix: Redfish). ● Differences in feature sets.
 ● Way to many features.
 ● Unstable, slow. Bonus: LOM issues 13
  • 14. Going Rack Scale.
 Bring volume up. Getting Rooms to match.

  • 15. Going Rack Scale.
  • 16. ● Ordering by the 
 blade center chassis.
 ● Solves trash issues. ● Streamlines late provisioning phase. ● Limited in what goes into a chassis.
 ● Chassis to be discontinued. ● Ordering by the rack.
 → Rack Scale Designs, → Open Compute
 ● More design flexibility.
 ● “shared power/cooling” savings? Larger Scale - Chassis, Rack. 16
  • 17. ● Rackscale Design
 ● Integrated Rack Management. ● “Composeable Hardware”.
 ● Sometimes delivered including the DC. ● Open Compute
 ● “Less is more”.
 ● Value added at higher level software. ● For us, Kubernetes on top of it an important part of the equation. Alternatives 17 Even more
 bespoke. Bulk.
  • 18. Potential Benefits ● Clean bare server design w/o “value add”. ● Documented, we can integrate with our systems.
 ● Delivery by the rack.
 
 ● Potential operative and capital savings. 18 See “Getting Volume Up”
  • 19. Getting volume up.
  • 20. Too many profiles ● Goes to 11. ● 2 CPU, 2 Mem sizes. ● Lots of different local storage profiles. 20
  • 21. The answer is obvious: 21 Ban everything!
  • 22. Storage Disaggregation 22 Production Space per Rack Budget: 2 OU, 500W, 1 Port 50cm, 100 GBit Copper Link Uniform Production Compute East-West Replication Traffic, production-side East-West Data Access Traffic, production-side Kubernetes: Resiliency, Application Mobility, Capacity Size Adjustment No Local Persistence
  • 23. Storage Disaggregation ● 4 profiles or less. ● Disk “as requested”. ● Location independence. ● Independent HW upgrade. ● One single network.
 ● (Hadoop) 23 Production Space
  • 24. Getting rooms to match.
  • 25. Rack and Room as a System 25 OCP Gear
  • 26. Two Sided Markets ● “Anonymous Supply and Demand”
 ● Key: 
 A common spec 
 to build to. 26 OCP Gear
  • 27. DC Space availability ● Quick Availability. ● High Flexibility. ● Fewer Operative Distractions.
 ● Higher Cost. ● (Capacity Fragmentation.) 27 For smaller companies, this is essential.
  • 28. How does this work on smaller scales? “Rack and Room as a System”
 “Two Sided Market”
 Leverage documented machine interfaces for open integration and management systems. 28
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