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Why SSDs are
 Awesome
 WordCamp NYC 2009
  Barry Abrahamson
Me

• Systems Wrangler at Automattic
• Sysadmin, systems architect, DBA
• Used to live in NYC, now live in Ft. Worth,
  Te...
WordPress.com

• Over 9 million blogs and 11 million users
• 50+ million page views/day
• 1.2 billion queries/day just for...
Queries per hour
Before
• 4 x 15k RPM
  SAS drives
• RAID 0
• RAID
  Controller
  with BBWC
• $1200
Road to SSDs
• January 2008 - Mtron experiment (FAIL)
• April 2009 - Intel experiment (SUCCESS)
 • May 1, 2009 - Productio...
After
• 1 x Intel X25-M
  SSD 80GB
• No RAID
  controller
• $300
                        http://www.flickr.com/photos/xuoan...
Awesome

• 75% cheaper than fast HDDs + RAID
  controller
• 6x real-world performance/capacity
  improvement
• Reliability...
Less than Awesome
• Saves money and your user’s time, but likely
  not your (sysadmin’s) time
• Lots of research, tweaking...
Contact me!


•   barry [ at ] automattic [dot ] com
•      http://barry.wordpress.com
Questions!
(about whatever you want to ask)
SSDs are Awesome
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SSDs are Awesome

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SSD Presentation from WordCamp NYC 2009

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Transcript of "SSDs are Awesome"

  1. 1. Why SSDs are Awesome WordCamp NYC 2009 Barry Abrahamson
  2. 2. Me • Systems Wrangler at Automattic • Sysadmin, systems architect, DBA • Used to live in NYC, now live in Ft. Worth, Texas
  3. 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. 4. Queries per hour
  5. 5. Before • 4 x 15k RPM SAS drives • RAID 0 • RAID Controller with BBWC • $1200
  6. 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. 7. After • 1 x Intel X25-M SSD 80GB • No RAID controller • $300 http://www.flickr.com/photos/xuoan-dailies/3235208908/
  8. 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. 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. 10. Contact me! • barry [ at ] automattic [dot ] com • http://barry.wordpress.com
  11. 11. Questions! (about whatever you want to ask)
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