SSDs are Awesome
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SSDs are Awesome

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SSD Presentation from WordCamp NYC 2009

SSD Presentation from WordCamp NYC 2009

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  • 1. Why SSDs are Awesome WordCamp NYC 2009 Barry Abrahamson
  • 2. Me • Systems Wrangler at Automattic • Sysadmin, systems architect, DBA • Used to live in NYC, now live in Ft. Worth, Texas
  • 3. WordPress.com • Over 9 million blogs and 11 million users • 50+ million page views/day • 1.2 billion queries/day just for post and comment data • 300+ database servers
  • 4. Queries per hour
  • 5. Before • 4 x 15k RPM SAS drives • RAID 0 • RAID Controller with BBWC • $1200
  • 6. Road to SSDs • January 2008 - Mtron experiment (FAIL) • April 2009 - Intel experiment (SUCCESS) • May 1, 2009 - Production deployment • May 15, 2009 - Critical bug found • May 30, 2009 - Start over w/ prod deploy • July 2, 2009 - Migrations complete!
  • 7. After • 1 x Intel X25-M SSD 80GB • No RAID controller • $300 http://www.flickr.com/photos/xuoan-dailies/3235208908/
  • 8. Awesome • 75% cheaper than fast HDDs + RAID controller • 6x real-world performance/capacity improvement • Reliability: 150+ drives in production for 6+ months, only 1 failure.
  • 9. Less than Awesome • Saves money and your user’s time, but likely not your (sysadmin’s) time • Lots of research, tweaking, benchmarking, hacking necessary to achieve maximum performance • Most software is designed to reduce disk seeks
  • 10. Contact me! • barry [ at ] automattic [dot ] com • http://barry.wordpress.com
  • 11. Questions! (about whatever you want to ask)