Because of some engineering wizardry involving current applied sciences, Seagate has launched a brand new line of arduous disk drives that may match the throughput of a stable state drive.
The drives are a part of Seagate’s Mach.2 line, known as Exos 2X18. That is the second technology of the Mach.2, coming in 16TB and 18TB capability and assist both SATA3 6Gbps or SAS 12Gbps interfaces.
The drive is actually two drives in a single, with two units of platters served by two separate actuators, the arms with the drive heads, that work in parallel. So the 16TB/18TB capability is achieved via two 8TB/9TB drives packed into one 3.5-inch type issue. The Mach.2 line is full of helium to cut back friction.
Extra importantly the 2 drives are 7,200 rpm, the usual in HDD drives, quite than the ten,000 rpm or 15,000 rpm drives utilized in pre-SSD days. These drives have been sooner however achieved that velocity by spinning the disk platters sooner, thus producing higher warmth and having the next failure fee than the 7,200 rpmdrives.
The 2 actuators serve I/O requests concurrently through devoted knowledge channels. This permits the drive to attain most sustained switch charges of 524 MBs, which is on par with a SATA3 SSD drive. The SAS drive delivers 554 MBs sustained switch charges.
It needs to be famous that these are switch charges. Spinning media cannot match an SSD for random reads and writes. Learn/write IOPS for Exos 2X18 are listed at 304/560 whereas a SATA SSD’s learn/write IOPS can high 100k/90k.
Nonetheless, it clobbers the one actuator-based HDDs. Seagate’s 20TB Exos X20 additionally has a SATA3 interface and seven,2000 rpm spin velocity, however its most switch fee is simply 270MBs, half the velocity of the Exos 2X18.
HDDs nonetheless have a spot in enterprise storage for his or her capability, and the Exos 2X18 is right for chilly storage and disaster-recovery techniques the place giant quantities of information could must be retrieved. Doubling throughput will scale back restoration time significantly.
Seagate hasn’t set a worth or launch date for the drives.
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