Difference between sata and sas
Table of contents:
- SATA
- What are the greatest virtues of SATA disks?
- SAS
- What are the greatest strengths of SAS disks?
- Which to choose?
In this article we are going to tell you what the differences are between a disk with a SATA interface and a SAS drive, to try to determine which one would be the best for us to buy in case we are building a computer for X reason or we need to add more capacity. to our PC.
Index of contents
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SATA
The SATA interface is the most widespread in the PC world, practically all the hard drives that we find in stores use this type of interface and it has evolved over time. The first SATA cable could transfer up to 150 MB / s, SATA-II at about 300 MB / s, and the SATA-III interface currently allows data to be transferred at a speed of 600 MB / s.
Compared to SAS interface disks, these are cheaper and are generally not prepared for intensive data loading 24 hours a day (although there are special disks that, if they are, such as WD Purple , among others). Next we will see what are the greatest virtues of having a record like this.
What are the greatest virtues of SATA disks?
- Storage capacities tend to be higher Lower power consumption Cheaper
SAS
The disks in this category are considered electromechanical and are specially designed for servers, thanks to higher speeds than SATA disks and being prepared for an intense 24-hour workload, with the technology necessary to survive shocks or brownouts.. SAS disks are usually manufactured in such a way that the interior is free of dust and air, thus ensuring that no dirt particles enter, which may in some way damage the plates or other components.
Modern SAS cables can transfer information at a speed of up to 1500MB / s and the disks can rotate at a speed of up to 15, 000 RPM, double what we usually find on a SATA hard drive. The advantages of SAS disks in terms of speed and reliability are quite clear, but there is a drawback, they are also more expensive.
To give you an idea, a 300GB disk with a speed of 15K RPM may be costing more than 100 euros, although there are also more modest versions with 7200 or 10, 000 RPM but that are close to the specifications of a SATA disk.
What are the greatest strengths of SAS disks?
- Higher transfer speed Ready to run 24 hours a 'full' load Guarantees data integrity
Which to choose?
If you are going to use your computer for common tasks such as surfing the Internet, editing a video or playing video games, you should not leave the comfort zone offered by a SATA disk, for price and for the performance they offer, which should be enough for it.. In case you want a higher speed, you can opt for SSDs, which are also very reliable since they do not have mechanical and mobile parts inside.
SAS disks are very useful in environments where data integrity is crucial, at the enterprise and server level, where the workload is 24/7 and the usage is practically 100%. If you are planning to create a home server, a SAS disk is a highly recommended option.
I hope this article has resolved your doubts and we will see you next time.
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