1. Jeremy Zawodny jzawodn@craigslist.org http://blog.zawodny.com Craigslist.org

2.  Too few IOPS  Seek and wait, seek and wait  Glass ceiling in some operations  Too many disks  Need many spindles, not capacity  Even our SAN isn't cost effective here Craigslist.org

3.  Too many servers  Lots of "wasted" CPU  Too much maintenance  RAID controller a singe point of failure – we’ve had an insane number of RAID failures on our 3U hardware  Always re-cloning databases Craigslist.org

4.  Performance  Amazing! 10X faster in benchmarks  We're assuming 5X as a conservative figure  Consolidation to follow  Power  ~180 watts vs. nearly 1,000 per box  Reliability  Too soon to tell, but we have no RAID controllers Craigslist.org

5.  Fusion-io  Looked into Intel Extreme SSDs Great, but PCI bus has MUCH more bandwidth (and no RAID controllers)  Deployment in process now  Dual cards using Linux Software RAID-0 Craigslist.org

6. Thank You Craigslist.org