help me choose qty=6 s/ATA disks for my multi node NAS

[DiTBho]

ok, after much thought on DataSheets and Manuals, I decided to invest in WD Red Pro, 2Tbyte!

{ SCSI, SAS, FC } HDDs are more expensive than "consumer-grade" s/ATA drives, and usually used in servers and disk arrays, where s/ATA drives were sold to the "home computer" and "desktop" and near-line storage market and were perceived to be less reliable.

This distinction is now becoming blurred, especially with the WD Red Pro line, which has an immense disk-cache, and I don't like it too much, but this model is the best possible compromise and it's also good for my next NAS.