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Samsung 850 Pro 256GB Three-Drive SSD RAID Report

By: Jon Coulter | RAID in Storage | Posted: Jan 9, 2015 3:14 pm

Specifications

 

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Samsung's 850 Pro SATA III SSD is available in four capacities, 128GB, 256GB, 512GB, and 1TB. Specifications list the 256GB 850 Pro SSD as capable of 550MB/s sequential reads, and 520MB/s sequential writes. Max random read/write speed is listed at 100,000/90,000 IOPS. Samsung's 850 Pro comes in a 2.5" x 7mm z-height form factor, and ships with proprietary software for drive management, and free migration software is available for download. The 850 Pro supports AES 256-bit hardware encryption that meets TCG Opal 2.0 and IEEE-1667 standards. Samsung backs the 850 Pro with an industry leading ten-year warranty with a 150 TBW (Terabytes Written) limit.

 

Because this is a RAID review, we are going to focus on performance rather than features. For a more in-depth look at the Samsung 850 Pro's feature set, I will refer you to Chris Ramseyer's extensive review of Samsung's 850 Pro 256GB SSD.

 

 

Drive Details - Samsung 850 Pro 256GB SSD

 

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Samsung packages their 850 Pro in an attractive black box. There is a picture of the drive on the top of the box. The drive's capacity is listed on a sticker placed on the top right corner of the front of the box.

 

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The rear of the box lists the drive's performance specifications, its ten-year limited warranty, model number, and UPC code.

 

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The drive comes cradled in a plastic tray for protection. A software CD, printed warranty statement, installation guide, and a pair of "Samsung SSD Activated" stickers are all included.

 

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The top and sides of the 850 Pro's enclosure are formed from piece of cast, glass-beaded aluminum that has been painted black. Beveled edges and rounded corners give it a nice touch.

 

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The bottom of the drive's enclosure is formed from a piece of stamped sheet aluminum painted dark gray. Centered on the rear face of the enclosure is a manufacturer's sticker that lists the drive's part number, serial number, and capacity. Three pentalobe screws, two of which are hidden by the sticker, secure the bottom of the enclosure.

 

Typically, we open up a drive to show you what is inside, but not this time (can't find my pentelobe driver). To view the internals of this drive, you can click HERE.

 

 

Test System Setup

 

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- Drive Properties

 

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The majority of our testing is performed with our test drive/array as our boot volume. Our boot volume is 75% full for all OS Disk "C" drive testing to replicate a typical consumer OS volume implementation. We are using 64k stripes for all of our three-drive arrays. Cstates and Speed stepping are both disabled in our system's BIOS, High Performance power plan is enabled in Windows, Write-back caching is enabled via Intel's RST control panel, and Windows' buffer flushing is disabled. We are utilizing Windows 8.1 64-bit for all of our testing.

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