What is SAS and SATA drive?

What is SAS and SATA drive?

SAS and SATA are two technologies that computers use to transfer data from the motherboard to storage, and vice versa. SAS is generally more expensive, and it’s better suited for use in servers or in processing-heavy computer workstations. SATA is less expensive, and it’s better suited for desktop file storage.

What is a SAS disk?

In computing, Serial Attached SCSI (SAS) is a point-to-point serial protocol that moves data to and from computer-storage devices such as hard disk drives and tape drives. SAS offers optional compatibility with Serial ATA (SATA), versions 2 and later.

Is SAS compatible with SATA?

SAS controllers enable the use of SATA drives to expand the storage capacity with cost-effectiveness. The use of SATA hard drives on SAS controllers is made possible by the fact that both share the same infrastructure and have similar features. SAS drives cannot be plugged into SATA controllers.

What are the three types of SAS devices?

There are three types of SAS devices: initiators, targets and expanders. Initiators attach to one or more targets and form a SAS domain and a SAS domain can consist of up to 128 devices.

What’s the difference between a SATA and SAS drive?

NL-SAS. You see, NL-SAS is basically a merging of a SATA disk with a SAS connector. From Wikipedia: “NL-SAS drives are enterprise SATA drives with a SAS interface, head, media, and rotational speed of traditional enterprise-class SATA drives with the fully capable SAS interface typical for classic SAS drives.”.

Which is the best type of SAS hard drive?

Generally, the most popular SATA drive format is 7.2K, and SAS has two main types: 10K and 15K. SAS drives are commonly used in enterprise computing, such as bank transactions and e-commerce.

What is the data throughput of a SAS hard drive?

The data throughput defines the rate at which data can be read from or written to the hard disk. 15K SAS hard drives run at approximately 120 IOPS, and typical 10K SAS drives run at 180 IOPS. As for the capacity of SAS drive, it ranges from 300GB to up to 900GB.

What is the BER of a SAS disk?

With SAS disks, the BER is generally 1 in 10^16 bits. Read differently, that means you may see one bit error out of every 10,000,000,000,000,000 (10 quadrillion) bits. By comparison, SATA disks have a BER of 1 in 10^15 (1,000,000,000,000,000 or 1 quadrillion).