1 / 10

GridPP Tier1 Review Fabric

GridPP Tier1 Review Fabric. 20 June 2012 Martin Bly – Fabric Team Leader. Rôle. Fabric Team ‘runs the hardware’ Look after and develop fabric of the Tier: Networks and SANS Servers ( storage, CPU, Virtualisation, core ) Configuration Management Tape Robotics Maintenance & Spares.

howe
Télécharger la présentation

GridPP Tier1 Review Fabric

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. GridPP Tier1 ReviewFabric 20 June 2012 Martin Bly – Fabric Team Leader

  2. Rôle • Fabric Team ‘runs the hardware’ • Look after and develop fabric of the Tier: • Networks and SANS • Servers ( storage, CPU, Virtualisation, core ) • Configuration Management • Tape Robotics • Maintenance & Spares Fabric - Tier1 Review, June 2012

  3. Highlights • CVMFS • Solved the problem of serving software directories • MagDB • Integration of hardware information sources • Solving disk issues • Finding fixes for hardware problems enabling continued use of older hardware • Continued rollout of Quattor Fabric - Tier1 Review, June 2012

  4. Configuration Management • Configuration Management system is used to control all aspects of the state of a machine from installation to production and eventually decommissioning • Using Quattor with Puppet for two years • Hybrid system • Quattor for bare metal provisioning and in most cases full configuration control • Puppet for some service configuration files, notably for Castor • Moving towards integrating Puppet functions into Quattor • Some services still raw kickstart: • Oracle database servers running RedHat • Migration to Quattor planned this year • Overall works well Fabric - Tier1 Review, June 2012

  5. Current Tier1 Network • Star configuration • Single Force10 C300 ‘core’ switch with 32 x 10GbE ports • Several Force10/Arista/Fujitsu switches providing access at 10Gb/s to storage servers and switch stacks. • Nortel/Avaya switches in stacks providing 1Gb/s access. • Mostly dual 10Gb/s uplinks, some direct, some via Force10/Arista/Fujitsu switches • Uplinks to ULKR (20Gb/s) and Router A (10Gb/s) • Issues: • Core is single point of failure though a resilient configuration • Spare switch components available • No path to higher bandwidths • Limited expansion capability Fabric - Tier1 Review, June 2012

  6. Tier1 Network - Current Fabric - Tier1 Review, June 2012

  7. Network plan - Requirements • Resilient configuration • Against unit and link/path failures • Future-proof • Higher bandwidth on switch links and in ‘core’ • Room for bandwidth expansion • Higher bandwidth to RAL Site network • Affordable Fabric - Tier1 Review, June 2012

  8. Network Plan - Designs • Core with ‘Star’ topology • Same design as now, simple • Duplicate ‘core’ switch to add resilience • Expensive to upgradeto higher bandwidth links • Higher load on individual elements • Element failures impair bandwidth • Mesh topology • More complex • More but cheaper elements • Upgrade paths cheaper • Lower load on elements • Failures have less impact on overall bandwidth Fabric - Tier1 Review, June 2012

  9. Network Plan - Mesh New design will use a mesh Routing layer between Tier1 and Site Aggregation layer: Force10 Z9000 - 32x40GbE switches 10Gb/s access layer: Force10 S4810 - 48x10GbE + 4x40GbE 1Gb/s access layer: Force10 S60, Avaya 56xx, Arista 7124 Aggregation and 10Gb access layer linked a 4x40Gb/s Access layers linked at 2 or 4x10Gb/s Fabric - Tier1 Review, June 2012

  10. Future Network Topology Fabric - Tier1 Review, June 2012

More Related