Thanks to @HoneyBadger iX Systems updated the old resource by fixing the errors and further improving it. I have thus removed the option to download the old PDF from this resource, and uploaded at this link for posterity.

Show : OLD VERSION's ERRATA

While the resource is valid there are a few mistakes, namely:

• page 4, Storage space efficiency formula
  • correct: 1/N​
• page 5, 6x 2-way mirror
  • correct Read IOPS: 3000​
  • correct Write IOPS: 1500​
• page 6, 4x 3-way mirror
  • correct Streaming read speed: 1200 MB/s​
• page 11, Scenario 3​
  • a SLOG is not a write cache​

While the resource is valid there are a few mistakes, namely:

• page 4, Storage space efficiency formula:
  • correct: 1/N​
• page 5, 6x 2-way mirror
  • correct Read IOPS: 3000​
  • correct Write IOPS: 1500​
• page 6, 4x 3-way mirror
  • correct Streaming read speed: 1200 MB/s​
• page 11, Scenario 3​
  • a SLOG is not a write cache​