Wednesday, July 30, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung And Apple See Their Smartphone Market Shares Plunging
Twitter Says Its User base Increased
Microsoft Details Windows Phone 8.1 Update, Brings Cortana To New Markets
Facebook to Shut Down Gifts Service
Netflix To Pay AT&T For Smooth Video Delivery
Lite-On To Showcase New Enterprise Storage Solutions
Sharp Develops Brighter LED for LCD Backlights
Microsoft Releases The Sharks Cove, A Raspberry Pi Alternative
Active Discussions
help questions structure DVDR
Made video, won't play back easily
Questions durability monitor LCD
Questions fungus CD/DVD Media, Some expert engineer in optical media can help me?
CD, DVD and Blu-ray burning for Android in development
IBM supercharges Power servers with graphics chips
Werner Vogels: four cloud computing trends for 2014
Video editing software.
 Home > News > Optical Storage > Seagate...
Last 7 Days News : SU MO TU WE TH FR SA All News

Wednesday, May 05, 2004
Seagate claims SATA with NCQ can beat 10K SATA


Seagate today at WinHEC demonstrated in head-to-head tests using Intel's IOMeter benchmark that its Barracuda 7,200-rpm Serial ATA (SATA) hard drive with Native Command Queuing (NCQ) technology equals or exceeds the performance of the latest 10,000-rpm SATA hard drives on the market.

Seagate also announced it is shipping its Barracuda 7200.7 SATA hard drives with NCQ technology to direct OEM customers next month. The demonstration can be seen this week at Booth 411 at WinHEC in Seattle.

Today's demonstration shows the power of NCQ by comparing a Barracuda 7200.7 SATA hard drive with NCQ to a current-generation 74-Gbyte 10,000-rpm SATA drive. Using Intel's IOMeter benchmark, the test transfers a four gigabyte random read/write file to both drives at the same time to exercise the full 32 queue depth capability of NCQ. The Barracuda 7200.7 with NCQ shows equivalent or higher I/Os per second compared to the 10,000-rpm drive. Customers no longer need to sacrifice capacity for performance with Serial ATA and NCQ.

NCQ technology will provide a new advantage in today's systems with Hyper-Threading Technology, which allows multiple applications to send I/O requests at the same time. NCQ will boost performance still more when applications take advantage of Asynchronous I/O. In addition, NCQ increases drive reliability in heavy workloads by eliminating much of the mechanical wear and tear that a non-NCQ drive must endure to transfer the same amount of data.

Native Command Queuing (NCQ) is a command protocol in Serial ATA that can only be implemented on native Serial ATA hard drives like Seagate's. It allows multiple commands to be outstanding within a drive at the same time. Drives that support NCQ have an internal queue where outstanding commands can be dynamically rescheduled or re-ordered, along with the necessary tracking mechanisms for outstanding and completed portions of the workload. NCQ also has a mechanism that allows the host to issue additional commands to the drive while the drive is seeking for data for another command.

NCQ allows the drive to set up the direct memory access (DMA) operation for a data transfer without host software intervention. This is also called first party DMA - it means that the device is capable of complex sequences of operations without CPU intervention. The drive itself knows the current angular and rotational position of the drive head. The drive then selects the next data transfer to minimize both seek and rotational latencies.


Previous
Next
Sony launches online music distribution service in U.S.        All News        ATI, Nvidia seen close in graphics battle
Sony launches online music distribution service in U.S.     Optical Storage News      ATI, Nvidia seen close in graphics battle

Get RSS feed Easy Print E-Mail this Message

Related News
Seagate Launches Channel On Roku
Seagate Delivers New Network Storage Portfolio
Seagate to Acquire LSI's Flash Businesses
Seagate Announces the Wireless Plus Storage Solution
LaCie Showcases Latest Thunderbolt 2 Storage Solutions Based on New 6TB Seagate Hard Disks
Seagate, WD Announce Latest Surveillence HDDs
Hitachi HDDs Have The Lowest Failure Rate: report
Seagate, LaCie Showcase Their Storage Technologies at CES
Seagate to Acquire Xyratex For $374 mln
Seagate Offers Windows Storage Server To Small- And Medium-Sized Businesses
Seagate Ships World's Thinnest 2TB Hard Disk
Seagate Q1 FY2014 Profit Falled

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .