Скачать с ютуб A brief introduction to SAS Drives, Controller and Cables в хорошем качестве

A brief introduction to SAS Drives, Controller and Cables

Mechanical SAS Hard Drives were amongst the last non solid state storage solutions. They were mighty fast for their time around the year 2014. Today, the rising speeds of SSDs and falling costs have made even 15,000 RPM SAS drives undesirable. These drives and their SAS controllers also consume far more energy than SSDs. In this video, I'm showing a HGST 600 GB 15k RPM C15K600 and Seagate Cheetah 300 GB 15k RPM hard drive. The controller that I'm using is an LSI SAS 9217-4i4e that has both an Internal SFF-8087 and External SFF-8088 connectors. Since each SAS connector supports up to 4 x SAS or SATA drives, this controller card can support up to 8 drives. As such, it uses PCI-e 8x interface rather than just 4x. The SAS drives can be powered by SATA or Molex power connectors, depending on the type of cable purchased. The maximum sustained Read Speed I'm getting is about 250 MB/sec, which is identical to modern 12+ TB Helium filled SATA drives that spin and just 7,200 RPM (less than half the speed)