The Meaning of SATA and SAS
SATA, also known as Serial Advanced Technology Attachment, is a bus interface that connects a host bus adapter to a hard drive. In 2001, the Serial ATA Committee, composed of major manufacturers such as Intel, APT, Dell, IBM, Seagate, and Maxtor, officially established the Serial ATA 1.0 specification, which is the mainstream trend for hard drives today and in the future.
SAS, also known as Serial Attached SCSI, is a new generation of SCSI technology that uses serial technology to achieve higher transmission speeds and improves internal space by shortening connection lines. SAS is a brand new interface developed after parallel SCSI interfaces. This interface can improve the performance, availability, and scalability of the storage system, and provide compatibility with SATA hard drives.
Many users are not very familiar with SAS hard drives and Sata hard drives. In fact, mechanical hard drives can be mainly divided into SATA hard drives and SAS hard drives according to their interfaces.
The SAS hard drive is a brand new interface developed after the parallel SCSI interface. The Sata hard disk storage node consists of a memory control interface MCI and a SATA hard disk controller. 2. Different characteristics: The SAS hard drive adopts serial technology, resulting in higher transmission speed. ATA hard disk communication adopts the SATA protocol, which is divided into physical layer, link layer, transmission layer, and command layer according to its functions.
The difference between SATA and SAS
1. Main difference: SAS hard disk is a brand new interface developed after parallel SCSI interface. The Sata hard disk storage node consists of a memory control interface MCI and a SATA hard disk controller.
2. Different characteristics: SAS hard drives use serial technology to achieve higher transmission speeds and improve internal space by shortening connection lines. ATA hard disk communication adopts the SATA protocol, which is divided into physical layer, link layer, transmission layer, and command layer according to its functions.
3. Purpose difference: SAS hard drive: to improve the efficiency, availability, and scalability of the storage system, and to provide compatibility with SATA hard drives. The Sata hard drive adopts a serial connection method, and the serial ATA bus uses embedded clock signals, which has stronger error correction ability and the advantages of simple structure and support for hot swapping.
In application scenarios, SATA hard drives are generally used for high-capacity storage. Compared to home grade SATA, enterprise grade SATA hard drives already have sufficient data integrity and data protection, but there is still a gap in IO processing compared to SAS. SAS hard drives are mostly used in enterprise level applications, which can meet high-performance and high reliability applications.
Post time: May-25-2023
