SATA (Serial ATA):-
from these days Most commonly using this hardware storage type. have replaced the quality parallel ATA or commonly called IDE drives. IDE stands for Integrated Drive Electronics which suggests that the disk control electronics are located on the drive itself. this enables newer hard drives to be ready to be switched out more easily or maybe utilized on different computers and still allow access to the info. SATA drives spin at max 5400-7800 RPM speed up to 3/GS (gigabits per second) with data transfer rates with some newer drives have up to 6/GS transfer rates. SATA drives are the foremost common drive within the market today and offer the most important drive capacities available. SATA drives today range up to 2 (2) Terabyte capacities and continues to grow.
SSD (A solid-state drive):-
can also be mentioned as a solid-state disk, maybe a data memory device that uses electronic circuits as a memory to store data persistently or during a non-volatile manner. such when electricity is faraway from the drive, the info is left intact. SSD drives use compatible interface technologies almost like traditional block I/O hard drives like SATA/SAS drives. A key difference between traditional SAS/SATA hard drives is that SSD drives don’t have any moving mechanical components, which distinguishes SSD drives from traditional spinning magnetic disks. Compared to traditional hard drives SSD drives are less vulnerable to physical shock, are silent, and have greater performance characteristics for reading/write access. the most drawback is that the value per gigabyte is far greater than traditional disk drives, and current SSD drives don’t have the massive capacities as traditional SAS/SATA drives have available today.
SAS (Serial Attached SCSI):-
SAS drives have replaced traditional SCSI drives. They use the enterprise SCSI method to provide advanced functionality. The SAS drives usually have much higher spin rates usually 10,000 to 15,000 rpm also as faster access times. The main Key differences between SATA and SAS include better device reliability and increased performance for data access reads and writes is most. Drive reliability may be a major difference as SAS drives have a way greater mean solar time between failures (MTBF). this suggests that SAS drives fail far less frequently than SATA, IDE, and Near Line SAS drive. This and therefore the greater speed on data throughput make SAS the well-liked hard drives for server and mission-critical devices albeit the value is far above SATA or NL-SAS drives.
NL-SAS (Near Line SAS) :-
NL-SAS drives are basically enterprise SATA drives with SAS interface Technology, R/W head, and media (platters). additionally, they need the rotational speed (spin) of traditional enterprise-class SATA drives (7800 or slower RPM) with the fully capable SAS interface command sets. Compared to SATA, NL-SAS drives have additional benefits like the power to attach a tool to multiple computers, slightly faster interface, up to 30%, compared to SATA, no STP (Serial ATA Tunneling Protocol) overhead. Reliability ratings fall within the same range as SATA drives so although they need many characteristics of SAS drives, they’re not SAS drives.