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View Full Version : WD VelociRaptor


Crusader
05-29-2010, 07:57 PM
What do you think about it?
322

Engineered for maximum speed! WD VelociRaptor, the newest member of our unique class of 10,000 RPM SATA hard drives, combines a SATA 3 Gb/s interface and 16 MB cache to deliver performance that's up to 35% faster than its speedy older brother.

Key Features

Killer speed - Built on the performance bloodlines of WD Raptor, these 10,000 RPM drives, with SATA 3 Gb/s interface, and 16 MB cache deliver mind-bending performance. Not only are they 35% faster than the previous generation WD Raptor drives, but they also beat out all other competitors in the field.
Rock-solid reliability - Designed and manufactured to mission-critical enterprise-class standards to provide enterprise reliability in high duty cycle environments. With 1.4 million hours MTBF, these drives have the highest available reliability rating on a high capacity SATA drive.
Double the capacity - State-of-the-art technology packs twice the capacity per disk compared to its older brother WD Raptor resulting in up to 300 GB of high-performance storage space in this enterprise-class 2.5-inch drive.
Ultra-cool operation - WD VelociRaptor consumes 35% less power than the previous generation of WD Raptor.
IcePack mounting frame - The 2.5-inch WD VelociRaptor is enclosed in a backplane-ready 3.5-inch enterprise-class mounting frame with a built-in heat sink that keeps this powerful little drive extra cool when installed in high-performance desktop chassis.
Rotary Acceleration Feed Forward (RAFF) - Optimizes operation and performance when the drives are used in vibration-prone, multi-drive chassis.
NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
Ideal For

Performance enthusiast systems, workstations, and servers

Compatibility

Windows
?Windows? Vista/XP/2000
?SATA interface connector on motherboard or SATA host controller*
?Available 3.5-inch internal drive bay

*Compatibility may vary depending on user's hardware configuration and operating system.
Performance Specifications
Rotational Speed 10,000 RPM (nominal)
Buffer Size 16 MB
Average Latency 3.00 ms (nominal)
Load/unload Cycles 50,000 minimum

Seek Times
Read Seek Time 4.2 ms
Write Seek Time 4.7 ms (average)
Track-To-Track Seek Time 0.7 ms (average)

Transfer Rates
Buffer To Host (Serial ATA) 3 Gb/s (Max)

Physical Specifications
Formatted Capacity 150,039 MB
Capacity 150 GB
Interface SATA 3 Gb/s
User Sectors Per Drive 293,046,768

Physical Dimensions
English
Height 1.028 Inches
Length 5.787 Inches
Width 4.00 Inches
Weight 1.08 Pounds

Metric
Height 26.1 mm
Length 147 mm
Width 101.6 mm
Weight 0.489 kg

Environmental Specifications
Shock
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 300G, 2 ms

Acoustics
Idle Mode 29 dBA (average)
Seek Mode 0 36 dBA (average)

Temperature (English)
Operating 41? F to 131? F
Non-operating -40? F to 158? F

Temperature (Metric)
Operating 5? C to 55? C
Non-operating -40? C to 70? C

Humidity
Operating 5-95% RH non-condensing
Non-operating 5-95% RH non-condensing

Altitude (English)
Operating -1,000 feet to 10,000 feet
Non-operating -1,000 feet to 40,000 feet

Altitude (Metric)
Operating -305M to 3,050M
Non-operating -305M to 12,200M

Vibration
Operating
Linear 20-300 Hz, 0.75G (0 to peak)
Random 10-300 Hz, 0.008 g? / Hz

Non-operating
Low Frequency 0.05 g?/Hz (10 to 300 Hz)
High Frequency 20-500 Hz, 4.0G (0 to peak)

Electrical Specifications
Current Requirements
12 VDC
Read/Write 225 mA
Idle 200 mA
Standby 6 mA
Sleep 6 mA

5 VDC
Read/Write 675 mA
Idle 425 mA
Standby 70 mA
Sleep 70 mA

Power Dissipation
Read/Write 6.08 Watts
Idle 4.53 Watts
Standby 0.42 Watts
Sleep 0.42 Watts

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.

offical site link: http://www.wdc.com/en/products/products.asp?driveid=499

Biskquik
05-29-2010, 10:16 PM
I'm really curious about Seagate's Barracuda XT hybrid drives over the Velociraptors.

Instead of increasing the speed the drive, seagate puts 4gigs of SLC flash on the disk which act as a cache for frequently accessed files. From the benchies I've seen, it seems to exceed the performance of the Velociraptor in certain cases.

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=525&Itemid=60
http://www.anandtech.com/show/3734/seagates-momentus-xt-review-finally-a-good-hybrid-hdd

It looks like the hybrids are 2.5" drives at the moment requiring a bracket to fit in desktops. I believe there are Barracuda XTs for desktops but those are regular drives at the moment (running on Sata 6gbs which is superfluous for HDDs).

Newegg is selling them but looks like they're out at the time of this post:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148591&cm_re=hybrid_hard_drive-_-22-148-591-_-Product

Cosmic_Shame
05-30-2010, 12:40 AM
SCSI is faster RPM wise

Crusader
05-30-2010, 12:19 PM
I like it for notouch ramp technology and icepack moutin frame