Mach.2 drives can even be RAIDed internally, though Seagate cautions against relying on one drive for redundancy, given that dual actuators donвЂ™t mean the entire physical drive is duplicated/protected.Дual actuators arenвЂ™t going to give HDDs the performance or responsiveness of SSDs, because no magnetic spinning disc can ever match the performance of a solid-state drive. The two actuators are fully independent and Seagate claims the measured, real-world performance improvement of a dual actuator is consistently in the 1.85x вЂ“ 2x range. The first-generation Mach.2 drive is expected to nearly saturate the SATA bus, which makes SAS 12Gb/s a better option for the long term. SAS 12Gb/s was used over SATA for several reasons. Seagate is marketing this drive as a solution to short stroking, so you arenвЂ™t going to see them talking about the 2X14 in that configuration. There is no reason why the Seagate Exos 2X14 couldnвЂ™t be short-stroked as well to maintain a higher level of performance, though we donвЂ™t know how large the gain would be. Short stroking a drive stores data only on the outer edges of the platter, reducing seek times and improving transfer rates. ThereвЂ™s a fourth way to improve HDD performance worth mentioning, though it isnвЂ™t really related to any technological advances. Now, in 2021, weвЂ™ve got dual actuator drives. Hard drives hit 7200 RPM with SeagateвЂ™s Barracuda 1 in 1992, drive caches were popularized by drives like the WD800JB in 2002, and Seagate introduced Native Command Queueing (NCQ) support for HDDвЂ™s in 2004. Hard drives have typically gotten faster in three ways: Increased spindle speeds, the integration of drive cache, and command queueing. Seagate actually goes into some detail on why it brought dual actuator drives to market. The 524MB/s for the Exos 2X14 is high enough to match or exceed the performance of early SATA SSDs, though these, of course, are scarcely the competition. The companyвЂ™s higher capacity enterprise Exos HDDs claim up to 270MB/s in sequential transfer rates. SeagateвЂ™s Exos 15E900 is a 2.5-inch 900GB HDD with lower claimed latency (2ms compared with 4ms) but a sequential transfer rate of 210-300MB/s.

Seagate st30000u2 specs