Since SAS is designed with reliability and concurrent data in both directions, it is more frequently installed in large-scale data center servers. The key way to tell the difference between the two is SATA drive will have a split between the data and power, whereas the SAS connector will have more of a single edge.ĭue to their physical similarities, there are some cross-compatibility features between SAS and SATA (more on that below). What is the physical difference between the ports?Īt first blush, SAS and SATA ports look very similar – they both use fifteen-pin power and seven-pin data connections. There are other differences between SAS and SATA backplane servers if you want to deep-dive into the full technical specifications, Intel provides this helpful server guide comparison chart. Those devices are expected to handle a lot of data with a very high level of reliability for several end users. It is for these reasons that SAS drives are mainly designed for Enterprise servers. The higher rate is achieved through the “full-duplex” functionality of SAS – the ability to send and receive data at full speed concurrently (SATA drives can only send or receive data at one time). In a nutshell, SAS Hard Disk Drives are more reliable than SATA, having a longer Mean Time Between Failure (MTBF), while also having faster data transfer speeds than SATA drives. SAS, considerations you want to make in regards to which is best for your server, as well as any compatibility concerns with server backplanes. In this post, we’ll cover the key differences between SATA vs. While the majority of desktops use SATA (or Serial ATA) hard drive connectors, SAS is an Enterprise-class hard drive connector that allows for greater reliability and faster data transfer speeds. If you are new to the world of servers, a term that you may be hearing is “SAS” (Serial-Attached SCSI).
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