SATA disks were introduced in 2005 with the Intel D915PGN desktop motherboard. SATA use 7 data pins while SAS use 14 data pins. Both use 15 power pins. The SFF-8482 connector makes it possible to connect disks to a backplane to simplify replacement.
SATA DISK RELIABILITY
Remember there are 8,760 hours in a year. In 5 years, disks rack up 43,800 operating hours.