New hard drive technology to boost drive data density in 2014

Seagate logoA breakthrough technology by Seagate claims to be able to exceed the current 1TB per platter mechanical limit, hit at the end of last year. The technology, known as "Shingled Magnetic Recording" (SMR) is expected to boost drive data densities by the beginning of 2014 from the current 1TB maximum to 1.25TB per platter and possibly more, if the technology improves.

A drive's mechanical components consist of a read/write head, and the data-retaining spinning platters. Recently, data density on each platter has been limited to the size of the write head's "shadow" on the drive platter, plus a protective track to prevent the head from either writing erroneous data, or reading out-of-place data for a request.

The new Seagate technology reduces the protective space on the platter and allows for some overlap (like roofing shingles, hence the name). By allowing tracks to overlap, data density can increase without further shrinking the size of the heads, which are said to be at the smallest size physically possible now.

Anand Lal Shimpi of Anandtech discusses some potential benefits and pitfalls to the new technology. Shimpi writes that "the obvious downside of SMR is actually very NAND flash-like. When writing data sequentially to an empty platter, SMR is full of advantages. When you're writing to a series of tracks that already contains data, the SMR writing process is actually destructive. Since the writer remains full width and tracks now overlap, overwriting one track will actually harm the next track; those subsequent tracks will need to be overwritten as a result."

When a series of tracks already contains data, overwriting new data will impact the overlapping track, which will have to be moved by the drive. This happens transparently to the user, at the firmware level of the drive at the cost of some read/write speed.

Seagate claims to have already shipped one million SMR drives, so the technology has been in use in enterprise and elsewhere for some time, apparently. While the company has not used the technology to increase density yet, the company is planning on increasing the per-platter size to 1.25TB in 2014 in part due to the new technology. It is unknown which current Seagate drives use the SMR technology, or what effect the technology has on drive longevity.

Source: Electronista

Tags: HDDs, Seagate

Comments
Add comment

Your name:
Sign in with:
or
Your comment:


Enter code:

E-mail (not required)
E-mail will not be disclosed to the third party


Last news

 
The new mobile payment app offers simple checkout proces
 
It is also rumored to feature a larger 4.2-inch display
 
Will warn users when background apps access the camera
 
Windows Phone 8.1 and 10 users have been spared for now
 
The drive also includes a hefty 40GB of DDR4
 
The bug also affects Safari and the built-in Messages app on macOS and the Apple Watch
 
Now is a good time to check out other keyboards that the Android and iOS app stores have to offer
 
Old installer pulled, new version pointing to the Store
The Samsung Galaxy A5 (2017) Review
The evolution of the successful smartphone, now with a waterproof body and USB Type-C
February 7, 2017 /
Samsung Galaxy TabPro S - a tablet with the Windows-keyboard
The first Windows-tablet with the 12-inch display Super AMOLED
June 7, 2016 /
Keyboards for iOS
Ten iOS keyboards review
July 18, 2015 /
Samsung E1200 Mobile Phone Review
A cheap phone with a good screen
March 8, 2015 / 4
Creative Sound Blaster Z sound card review
Good sound for those who are not satisfied with the onboard solution
September 25, 2014 / 2
Samsung Galaxy Gear: Smartwatch at High Price
The first smartwatch from Samsung - almost a smartphone with a small body
December 19, 2013 /
 
 

News Archive

 
 
SuMoTuWeThFrSa
    123
45678910
11121314151617
18192021222324
25262728   




Poll

Do you use microSD card with your phone?
or leave your own version in comments (6)