Once upon a time, Stephen Morris <steve.morris...@gmail.com> said: > If that is the case why does the specs for that device under > performance say it will support speeds of 1Gb/s, 3Gb/s and 6Gb/s.
Because that is the speed of the link between the drive and the controller/motherboard. It's possible for an individual sector to be sent to the controller at that data rate (short burst of data, especially if the requested sector is in the drive's cache), but that's not what can be sustained, due to the mechanical process of spinning platters. Also, don't forget that SATA speeds are rated in bits, while drive performance is typically rated in bytes... so 156 MB/s is 1.25 Gb/s (really more than that because of link overhead). SATA connections were upgraded to 3 Gb/s as hard drives approached the 1.5 Gb/s speed (especially for short bursts), and then SATA was upgraded to 6 Gb/s to handle SSDs (and then NVMe replaced SATA for much faster SSDs). Basically... nobody gets spinning hard drives for high performance. SSDs, especially NVMe, are the high performance target. Spinning drives are for bulk storage, backups, and certain write patterns like video recordings (monitoring systems and DVRs). -- Chris Adams <li...@cmadams.net> -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
