Data storage and next-generation non-volatile memory technology

December 19, 2012, Agency for Science, Technology and Research (A*STAR), Singapore

As digital information continues to accumulate, data storage facilities require new technologies to cope with supply and demand. Credit: iStockphoto/Thinkstock
(—Internet, computing and networking technologies are now integral to many people's lives, generating ever-increasing amounts of digital information. Data storage experts estimate that by 2020, 35 zettabytes—35 x 1021 bytes—of digital information will require storage that is safe, reliable and above all, quickly accessible. "Storage is the most likely issue to inhibit the capability and performance of a computing system," explains Yong Khai Leong at the A*STAR Data Storage Institute. "Current hard disk drives consume significant energy and release a lot of heat."

Most of the processing work in a computer is performed by random-access memory (RAM), which can access any part of its memory very quickly. However, this comes at a cost—information in RAM is not stored when the computer is off—so storage devices using non-volatile memory (NVM), such as ROM and flash memory associated with magnetic hard disks, are used for long-term storage. 

Yong and co-workers reviewed existing data center storage systems, and suggested ways to incorporate next-generation NVM, which can do the job of RAM as well as providing storage, into future data centers. They focused on the importance of scalable, affordable , and the need for devices that can quickly read files and metadata. Examples of metadata include the keywords stored alongside every webpage for the benefit of .

Data centers already use alternatives to hard disks such as solid-state drives (SSDs) that use less power than magnetic hard disks. However, SSDs are expensive and still slower than RAM. "We propose a new incorporating next-generation NVM technology in a hybrid form with magnetic disk drive technology," explains Yong. "This NVM has a longer than SSDs, and is quicker at reading metadata."

A conventional magnetic disk drive in hybrid with next-generation NVM can spin less quickly because the task of reading data is sent through the NVM first. As a result, less energy is consumed. Also, while the NVM is searching through files, the disk drive is free to carry out maintenance tasks such as file backups, reducing the potential for data loss.

Yong notes that future systems will need intelligent algorithms—software that knows which data tasks to prioritize in the NVM at different times according to user demand.

A*STAR is leading the global search for data solutions, with a three-year research program in place. "We are taking a holistic approach in investigating the optimal ways to integrate these new emerging technologies into current systems and data centers," Yong says.

Explore further: IBM buys flash memory firm

More information: Yong, K. L., Aung, K. M. M. & Alexopoulos, P. S. Storage system architecture for data centers of the future. International Journal of Advancements in Computing Technology 4, 184–192 (2012). … ml?jname=IJACT&q=866

Related Stories

IBM buys flash memory firm

August 16, 2012

IBM on Thursday announced a deal to buy a US firm specializing in high-performance solid state memory, which is fast replacing spinning disks used to store data in computer hard drives.

What Comes After Hard Drives?

October 23, 2009

( -- The ability to store and retrieve data is an important component of today's computers, as well as other modern electronic devices such as cell phones, video game consoles, and camcorders. Since their invention ...

Thin drives -- the next generation of portable memory

November 17, 2011

Tablets are fast becoming the media device of choice nowadays for work and play, particularly with the advent of iPads and the Samsung Galaxy Tab into the mobile device market. With a volume of 19.5 million of media tablet ...

Intel Ships Enterprise-Class Solid-State Drives

October 16, 2008

Intel Corp. has begun shipping its highest- performing solid-state drive (SSD), the Intel X-25E Extreme SATA Solid-State Drive, aimed at server, workstation and storage systems. Unlike mechanical drives, the SSDs contain ...

Recommended for you


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.