The difference between hard disk sas and sata and ssd

One, the main body is different

1, sas: that is, the serial connection SCSI, is a new generation of SCSI technology.

2, sata: also known as serial hard disk, is the future trend of PC hard disk, has basically replaced the traditional PATA hard disk.

3, ssd: that is, solid-state electronic storage array hard disk.

Second, the characteristics of different

1, sas: each SAS port can be connected to up to 16,256 external devices, and SAS to take a direct point-to-point serial transmission mode, the transmission rate up to 3Gbps.

2, sata: the storage node by the Memory Control Interface MCI and SATA hard disk controller.

3, ssd: the main body is actually a PCB board, and the most basic accessories on this PCB board is the control chip, cache chip and flash memory chip used to store data.

Three, the advantages of different

1, sas: is a parallel SCSI interface after the development of a new interface. This interface is designed to improve the performance, usability and expandability of the storage system and provide compatibility with SATA hard disks.

2. sata: effectively filters out noise from normal signals, and the good noise filtering capability allows SATA to operate at low voltages.

3, ssd: control data writing, error correction, erase, etc., can achieve performance optimization, data encryption and write protection function, data security erase mode, self-destruct function.

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