Western Digital Caviar Green WD20EADS (2 TB)
This is it: the world’s first 2 TB or 2,000 GB hard drive. It is not a high-performance 7,200 RPM drive, but a 5,400 RPM energy-efficient drive, according to Western Digital’s specifications for the Caviar Green WD20EADS. You may still remember our review of the 1 TB version, the WD10EADS, which remains the most energy-efficient terabyte hard drive we have tested. Therefore, our expectations are high.
Still, there are some things to consider. The WD10EADS, for example, is based on three platters, while the WD20EADS utilizes four platters for its full 2 TB of capacity. More moving parts translate into higher power consumption, which is why the new drive cannot beat its 1 TB brother. However, capacity per watt still is much better.
Specifications
All Western Digital desktop drives are based on SATA/300 interfaces with NCQ, and those with capacities of 1 TB or more have 32 MB cache. The operating temperature range was increased from between five degrees Celsius and 55 degrees Celsius to between zero degrees Celsius and 60 degrees Celsius, which is also the case for the two other drives.
Western Digital doesn’t talk about its actual spindle speeds and prefers to refer to IntelliPower, which is the marketing name for the balance between spindle speed, transfer rate, and caching algorithms, as part of its effort to design drives with the best balance between performance and power consumption. Insiders still say the speed is 5,400 RPM.
Power and Performance
The Caviar Green product portfolio is comprehensive, and it leaves out all of the little capacities that aren’t useful for end users, but system integrators seek. Western Digital’s Green drives start at 500 GB, while the high-capacity versions offer capacities of 1.0 TB, 1.5 TB, and 2.0 TB. The 1.5 TB and 2.0 TB drives are the new models, and only these were rated for the operating range stated above.
The WD20EADS is not one of the most efficient drives, as it is based on four platters. Therefore, its operating temperature reached 39.0 degrees Celsius (102.2 degrees Fahrenheit) after a long idle period, which is higher than the temperatures we observed with the other drives in this review. The throughput maxed out at 102 MB/s, which is a bit less than what Samsung’s Spinpoint F2 EcoGreen reaches. Access time, however, was surprisingly quick at only 13.2 ms. We double-checked our test results several times, but always found the same results: The WD20EADS has great access time and I/O performance despite being a low-power drive.
Latest Internal Storage News
- 09/02 – Laser Heat Used to Make HDD Write Transfers Faster
- 07/02 – Intel Introduces New 520 Series Line of SSDs
- 02/02 – Seagate Believes HDD Supply Disruption to Continue in 2012
- 01/02 – Other World Computing (OWC) Reveals Two New SSDs
- 28/01 – Cleversafe Announces 10 Exabyte Storage System Configuration
Latest Internal Storage reviews
- 09/02 – Momentus XT 750 GB Review: A Second-Gen Hybrid Hard Drive
- 06/02 – Intel SSD 520 Review: Taking Back The High-End With SandForce
- 01/02 – Upgrade Advice: Does Your Fast SSD Really Need SATA 6Gb/s?
- 26/01 – Install A Hard Drive Or SSD In Your Notebook's Optical Bay
- 24/01 – Best SSDs For The Money: January 2012
Speed Or Capacity = erm both. Speed for the OS - Capacity for the grot.
Speed Or Capacity = erm both. Speed for the OS - Capacity for the grot.
Why do people make such comments?
Get 2 drives or more...You should know that there is no single solution that fits all cases well.
Get a VelociRaptor for OS/Apps and a 2TB for the grot. I actually have 4 drives. OS/Apps in mirror raid on VelociRaptors, 1 drive for games and 1 drive for general data + my NAS etc. Or look at SSD for the OS. It is best to partition the data you have based on the usage of your system. If you want a single HDD then you must be suicidal. No offence =)
Regarding the review, WD once again are on top of the game =)
Always reliable, fast and I am surprised about the noise levels. I cannot hear my VelociRaptors and they are 10000rpm drives. (Ok I know they are not the drives in the review, but still WD).
VelociRaptors are premium drives, costs about 2~3 times the normal drives of the same capacity. I wonder if the VelociRaptors drives can outperform a pair of interleaved Raid drives.
What people dont realise is that Western Digitals are nearly impossible to do head swaps on, so if your drive fails, your pretty much buggered if its a heads/preamp problem.
What people dont realise is that Western Digitals are nearly impossible to do head swaps on, so if your drive fails, your pretty much buggered if its a heads/preamp problem.
And does the head swap cost less or is more successfull than a mirrored drive? That is why there is RAID =)
VelociRaptors are premium drives, costs about 2~3 times the normal drives of the same capacity. I wonder if the VelociRaptors drives can outperform a pair of interleaved Raid drives.
THAT is the main issue !!! PRICE !!! One of my drives could have got me 4 normal WD drives. But usually what you pay for is what you get. I don't think that a single drive would outperform raid-0 on the other hand you can do raid-5 instead of raid-0 etc. I think it is really hard to decide what is the best choice cause we don't all have the same use of our data and computers. You got to think or power consumption too and, overall heat in the case etc. However I was pleasantly surprised with the VR's regarding heat, noise and speed.
where's Miles? has he not got anything pointless to say about this article?
Just a comment that will help newbies understand what they are looking at. For the benchmark graphs add somewhere that lower numbers are better/higher numbers are better or something like that. I would put it either access times or at the bottom of the graph. Just my two cents for someone who is new but wants to learn something.
VoiceGuard™ Border Controller(VGBC) bypass ISP blocking VoIP
For political & economic reasons, ISP may block VoIP in your country. How to solve it using VoiceGuard™ Border Controller(VGBC)?
Due to unique architecture, when deploying VGBC at customer CPE side, VGBC can work in the way similar to that of soho router, but it only encrypts and decrypts SIP and RTP packets on link layer, not to hand-up these packets to IP stack for forwarding while bypassing other data packets originating from SIP terminals. In this scenario, peak throughput and minimal CPU overhead can be easily achieved.
Key Benefits:
Minimal Overhead and High Call Quality
Easy to Use and Cost-effective
Unlimited Call Session Number
Highly Interoperable with any Third-party Products and Services, e.g.: Linksys PAP2
Support termination server blockade
***************************************************************************
VoicePass™ Service Plan for Residential and Home User
VoicePass™ is new kind of service specially for bypassing VoIP blocking imposed by ISP for residential and home user. It allows subscriber to use VoIP freely in blockage region such as Middle East and Africa without compromising of voice quality. Outgoing and incoming call is always available dependent upon what ITSP or service provider supplies. With VoicePass™ subscription, zero configuration setup is at your finger. What you do only is to enjoy cheap VoIP rate and crystal voice. 24x7 support assures communication anytime and anywhere.
Key benefits:
Work with any ITSP and service provider
Minimal overhead and crystal voice quality
Easy-to-use and cost-effective
Zero configuration setup
Surpass conventional VPN scenario
Regarding comparison between VoicePass™ and VPN, please refer to
http://www.voicepassnet.com/vgclie [...] ison.html.
***************************************************************************
VoIP Anti blockage SIP softphone/Dialer ---- VGCommunicator
Fully SIP based PC softphone service.
Features:
• Supports branding with custom skin and logo
• Compatible with Windows 98/Me/2000/XP/2003/Vista
• NAT/Firewall traversal support
• Work with any 3rd party SIP Server
• SIP outbound proxy support
• Display caller account balance
• Display call credit time
• Embed Flash advertisements
• DTMF tones can be integrated with voice mail or other tone driven systems
• Multilanguage user interface
• Integration with customer website
• Voice Activity Detection
• Automatic Echo Cancellation
• Automatic jitter buffer adjustment
• Last number Redial
• History of 10 last dialed numbers
• Quick dial list
• Quick provision for customers, only user name and password required
• Auto software update
• VoiceGuard™ VoIP anti-blocking engine embedded, widely used in UAE , Asia & Africa ISP blocking VoIP market
And we provide customzation Softphone/Dialer service to the VoIP providers.
For more info, pls refer to http://www.voiceguardnet.com/vgcommunicator.htmlOther members of VoiceGuard for VoIP anti-blocking as follows:
• VoiceGuard™ Standalone Client(VGSC) for Windows – Perform encryption for any brands of ATA/Softphone, such as Linksys PAP2 & X-lite
• VoiceGuard™ Client SDK(VGSDK) - Incorporate voip anti-blocking capability into existing legacy softphone and dialer running on Windows(Softphone/Dialer customization service is also available with VGSDK)
• VoiceGuard™ SPE VoIP Adapter(VGSPE) – VoIP anti-blocking ATA device which is available in 1 - 4 FXS & FXO ports
• VoiceGuard™ Border Controller(VGBC) – Support any brands of ATA/Softphone for existing legacy ATAs, such as Linksys PAP2
***************************************************************************
VGSCLite released for VoIP Anti-Blockade, get free trial
For political & economic reasons, ISP may block VoIP in your country. To protect your VoIP business & profit, SpeedVoIP Communication Technology Co., Ltd. is providing Security VoIP software solution, VGSCLite, which installed on the PC at the client side. And it’s specifically for softphone such as X-Lite.
Key Features:
Maximum call completion rate and maximum voice service duration SIP core standards and a variety of drafts supported Proprietary link layer protocol for controlling Any 3rd-party Softphone/ATA/Gateway/IPPhone/IAD and SIP Proxy/Registrar/SBC supported The most comprehensive codec including g.711/g.723/g.729ab/iLBC/gsm/speechX supported Bypassing Narus and Verso platform detection Flexible user-customized encryption policy driven Strict call path protection and security up to termination Only simultaneous signaling/media/T.38 fax packet support across any firewall. No network or firewall modification is required. Excellent voice quality without any latency and performance compromise Small footprint terminal SDK Available on all major platforms.
Pls review: http://www.voiceguardnet.com for details & get free trial at http://www.voiceguardnet.com/download.html
***************************************************************************
VoiceGuard™ VoIP Adapter/ATA VGSPE for VoIP Anti-Blockade
VoiceGuard™ is versatile and powerful VoIP anti-blocking solution for ITSP and VoIP Reseller which can protect call completion and lead to maximum service duration while prevents revenue leakage for ITSP, which can work with any 3rd-party SIP proxy or softswitch.
VoiceGuard™ VoIP Adapter/ATA(VGSPE)for security & anti-blocking is available in 1-, 2-, 4-port FXS & FXO models
VGSPE Comparison Matrix:
VGSPE Model Ethernet Ports FXS Port FXO Port PSTN pass-through Port USB-B Port
VGSPE-1.1 2RJ45 (LAN/WAN) 1 0 Yes Yes
VGSPE-1.1 Pro 2RJ45 (LAN/WAN) 1 1 Yes Yes
VGSPE-2.1 2RJ45 (LAN/WAN) 2 0 Yes Yes
VGSPE-2.1 Pro 2RJ45 (LAN/WAN) 2 1 Yes Yes
VGSPE-4.0 2RJ45 (LAN/WAN) 4 0 No Yes
VGSPE-4.2 Pro 2RJ45 (LAN/WAN) 4 2 Yes Yes
Key Benefits:
Minimal Overhead and High Call Quality
Easy to Use and Cost-effective
Any 3rd party SIP proxy/Registrar/SBC supported
Termination trunking gateway supported
We also provide anti blockage hardware for existing legacyATA from other vendors.
• VoiceGuard™ Border Controller(VGBC) –hardware, support any brands of ATA/Softphone, such as Linksys PAP2
Other members of VoiceGuard for VoIP Anti blockage as follows:
• VoiceGuard™ Communicator(VGCommunicator) – Fully SIP compatible Softphone/Dialer for PC2Phone and PC2PC services
• VoiceGuard™ Standalone Client(VGSC) for Windows – Perform encryption for any brands of ATA/Softphone, such as Linksys PAP2 & X-lite
• VoiceGuard™ Client SDK(VGSDK) - Incorporate voip anti-blocking capability into existing legacy softphone and dialer running on Windows(Softphone/Dialer customization service is also available with VGSDK)
Due to the effective work we have done, our website http://www.speed-voip.com has been blocked by ISP. Please visit our website via VPN or turn to other website http://www.voicepassnet.com www.voiceguardnet.com
Candy
Email: candy@voicepassnet.com
MSN: svoipsalesgold@hotmail.com
Website:www.voicepassnet.com www.voiceguardnet.com
www.speed-voip.com (This web may has been blocked in some Middle East area)
Technical supporter Guru MSN: jlsnmp@163.com