Disaster Recovery in the Cloud -- A Failover Testing Case Study

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Yan Ness of Online Tech presents a slide show on disaster recovery in cloud computing as part of the seminar speaker series, 2 Cloud or Not 2 Cloud: The Business Case for Cloud Computing.

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Disaster Recovery in the Cloud -- A Failover Testing Case Study

  1. 1. Disaster Recovery & Private Cloud Our Real-World Example Yan Ness CEO, Online Tech Colocation Dedicated Servers Private CloudsCopyright © 2011 Online Tech. All rights reserved www.onlinetech.com 734.213.2020
  2. 2. Our Private Cloud • 23 Physical Servers • OT Private Cloud • 18 Windows, 5 CentOS – 2 Hardware Servers (N+1) • 2xQuad Core CPUs, 48GB RAM servers – 8TB SAN (SATA – RAID 10, 3TB usable) • 4 database servers – HA Configuration • Each ~10% utilized • Automatic Load Balancing Across Hosts • Automatic Failover to Single Server – Continuous Offsite Backup – Warm Site D/R in Ann Arbor • 4 Hour Recovery Time – Fully Tested Colocation Dedicated Servers Private Clouds 2Copyright © 2011 Online Tech. All rights reserved www.onlinetech.com 734.213.2020
  3. 3. Our World Everything is Mission Critical VS VS VS SAN VS VS Restore Colocation Dedicated Servers Private Clouds 3Copyright © 2011 Online Tech. All rights reserved www.onlinetech.com 734.213.2020
  4. 4. Lessons Fast, Effective but Manage or Die • 22 Servers restore and restart very quickly • 45 minutes • Exchange • 3.5 hours • Total Storage • 1.5 TB of server run files and data • Network • Maintain dual-network at production and DR site • DNS for failover • Backup • Assure success daily or even hourly • Database backups can require special care Colocation Dedicated Servers Private CloudsCopyright © 2011 Online Tech. All rights reserved www.onlinetech.com 734.213.2020

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