I don't believe you looked at the pictures or the short video. The heads
are not reading the same platters.
Tony Thigpen
Joel C. Ewing wrote on 12/20/2017 09:15 AM:
I don't think so. Says each R/W head accesses same disk blocks, and
there would be zilch improvement in speed if they were simply seen by OS
as two independent disks. By electronically selecting which of the two
heads to use to read the track based on which sees the start of the
desired block first, you cut the rotational latency time in half. With
a single R/W head the only way to get the same reduction in latency
delay would be to double the rotational speed of the platter, which
might cause greater problems.
J C Ewing
On 12/20/2017 07:18 AM, Tony Thigpen wrote:
From reading the description, it really just appears to the OS as two
drives in one housing.
Tony Thigpen
John McKown wrote on 12/20/2017 08:08 AM:
It's not really a drum, but it is getting closer. Of course, for true
speed, one should go SSD.
http://www.theregister.co.uk/2017/12/19/seagate_disk_drive_multi_actuator/
[quote]
Seagate is increasing IO performance in disk drives by separating
read-write heads into two separate sets which can operate
independently and
in parallel.
The heads are positioned at one end of actuator arms which rotate
around a
post at their other end to move the heads across the platter surfaces.
Thus, with an eight-platter drive, each read-write head is positioned
above
the same cylindrical track on each platter and reads or writes to and
from
the same disk blocks on each platter's surface.
[\quote]
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