I hear lots about SATA being slower than SAS but I've only found 1 decent benchmark.
http://blog.whitesites.com/SAS-RAID-0-VS-SCSI-RAID-0-VS-SATA-Benchmarks__633689244191943184_blog.htm
In this, SAS comes out on top until you read that the SAS drives are 10K and the SATA drives are 7200 RPM.
Has anyone seen any good benchmarks/comparisons with equivalent speed disks?
Has anyone seen any real-world loads (DB loads/searches, media streaming, etc?
Best Answer
The "SATA = 7.2K RPM, SAS = 10/15K RPM" mind-set is strong, and (in my opinion anyway) where most of the "SAS is faster than SATA" thinking comes from. There are some slight differences between SAS and SATA drives, notably in their on-board caching algorithms (NCQ vs. TCQ). However, the performance difference of equivalently specced hard-drives will be fractional percentage points in most use-cases.