Slide 6: "[Disk] throughput: 768 MB/sec on SATA 3" is misleading, consumer-grade rotating disks barely fill SATA 1 with ~70 MB/sec. SSD are faster in raw transfer, and if you have a RAID you are not limited by a single SATA channel any more.

Slide 13: "Laugh at MongoDB" is pretty stupid, mongo makes certain trade-offs that are not for everyone, but they are still meaningful.

The presentation doesn't explore the RAID options, which is a shame.