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SATA and SAS: which to choose?

SATA and SAS: which to choose? 20 July 2023

Looking at SATA and SAS from a consumer point of view, they are both universal interfaces that are used to connect hard drives to a server or computer. The basic function of these interfaces is the same, but they do have key differences.

SAS, or Serial SCSI, connects via a special SAS cable. It can be attached through a point-to-point or port-to-port connection. SAS uses the SCSI protocol to communicate between the software and the host controllers. In terms of scalability, SAS stands out with its ability to connect up to 128 devices. At the same time data transfer rate SAS drive can reach 12 gigabytes per second.

SATA, or Serial ATA, uses SATA cables to establish access between storage devices and charge controllers. This cable is distinguished by two pins that act as a data transfer. SATA can transfer data at up to 6 gigabytes per second.

Key differences between SATA and SAS

Many people in the field of computer technology, in particular universal interfaces, often ask about the differences between SAS and SATA. If we look at the key differences between these interfaces, we get this list:

  • Bandwidth: SATA transfer speeds are slower than SAS. SATA transfers at up to 6 gigabytes per second, while SAS transfers at up to 12 gigabytes per second.
  • Plenty of connectivity: SATA usually only connects to one port on one device, but SAS supports extended connectivity. In other words, SAS can connect multiple devices simultaneously.
  • Reliability: Compared to SATA, SAS is a simpler interface designed to be used in a variety of applications. Because of this, SAS is subject to advanced error detection and data recovery. SATA, on the other hand, is often used in home computers and small applications.
  • Cost: When looking at the price points of both interfaces, SATA devices and controllers are less expensive. SAS, on the other hand, requires more performance and security, which affects its cost.

When choosing between SAS and SATA, there is no one-size-fits-all interface. Each user has individual needs and criteria that must be considered when selecting an interface. However, SAS stands out on the balance of strengths and weaknesses due to its efficiency and specialization. If you still have questions after reading this material, you can always consult an expert.

SATA and SAS: which to choose?