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3.75
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It is a 1.8" Micro SATA internal Solid State hard drive that is available in 15GB, 30GB and 60GB capacities.

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Pros

WD PowerArmor and SiSMART technology extends the lifespan by monitoring voltage and possible drive failure

3 agree

Extended temperature version available with -40 C to 85 C operational range from the standard 0 C to 70 C

3 agree

1.8" Micro SATA compact design. Perfect for laptops, or even smaller devices

3 agree

1000G shock resistance

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lower power draw than standard drives - improves device battery life

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3 million hour life span

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100MB/s read, 80MB/s write

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trusted manufacturer - well known in the storage industry

2 agree

generally much faster than standard disk drives - low latency random reads and writes

1 agrees
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Cons

low capacities compared to mechanical drives

2 agree

poor for the everyday consumer - extra reliability, extended temperatures, etc... is not worth the cost for everyday applications

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Price / GB ridiculous when compared to standard hard drives

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very little data security - unrecoverable in the event something goes wrong with the controller / flash memory (unlike standard disk drives)

1 agrees
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Edit

 

The Western Digital SiliconDrive III 1.8 is a 1.8" Micro SATA internal Solid State hard drive that is available in 15GB, 30GB and 60GB capacities. Read and write speeds are average for SSD at 100MB/s and 80MB/s respectively but what sets this series apart is it's reliability and lifespan, which has been rated at 3 million hours mean time between failure(MTBF). This is more than twice the rated life of the typical SSD, which can be attributed to a few of WD's own technologies. PowerArmor monitors the drives' voltage ahead of time in case of an otherwise drive-corrupting power failure(3 out of 4 drive failures are due to brownout, power spike or unstable voltage levels). SiSMART is an endurance monitor which keeps an eye on the write/erase cycles of each block, replacing them with spare blocks when they become worn out and sending that information to the host system to keep a record of remaining spare blocks. Announced in June 2009, this series is Western Digital's first attempt at SSD drives, which are a quickly expanding sector. They have been marketed to the business and also military professional who require top system stability and reliability, even offering an extended temperature version for use in more extreme conditions.

Features
  • Read: 100MB/second
  • Write:  80MB/second
  • Seek Time: 0.25ms
  • 15GB, 30GB and 60GB capacity
  • MLC (multi-level cell) NAND technology
  • Dimensions: 3.081 X 2.126 X 0.197 inches
  • Weight: 43g
  • Shock resistant to 1000G
  • Standard temperature version: 0° C to 70° C
  • Extended temperature version: -40° C to 85° C
  • Non-operating temperature: -55°C to 125°C
  • Altitude: 80 000 feet max
  • 3 million hour MTBF (mean time before failure)
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