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SanDisk Extreme II 240GB 6-Drive SSD RAID Report

By: Jon Coulter | RAID in Storage | Posted: Apr 1, 2014 2:00 pm

Specifications and Pricing




SanDisk's Extreme II is available in three capacity sizes: 120GB, 240GB, and 480GB. Specifications list the 240GB Extreme II SSD as capable of up to 550MB/s sequential reads and up to 510MB/s sequential writes. Random read/write speed is listed at up to 95,000/78,000 IOPS at 4k QD32.


The Extreme II has a 7mm z-height allowing for more compatibility with newer laptops. The Extreme II is an affordable Hyper-Class SSD featuring premium 19nm, eX2 ABL MLC, 3k P/E toggle mode NAND. The Extreme II is powered by Marvell's 8 channel "Monet" 88SS9187 SSD processor.


Since this is a RAID review, we are going to focus on performance rather than features. For a more in-depth look at the SanDisk Extreme II's feature set, I will refer you to Chris Ramseyer's extensive review of the SanDisk Extreme II 240GB SSD.


SanDisk's Extreme II is the recipient of TweakTown's prestigious Best of Computex 2013 award in the SSD category.



PRICING: You can find the SanDisk Extreme II (240GB) for sale below. The prices listed are valid at the time of writing but can change at any time. Click the link to see the very latest pricing for the best deal.


United States: The SanDisk Extreme II (240GB) retails for $172.00 at Amazon.


Canada: The SanDisk Extreme II (240GB) retails for CDN$255.97 at Amazon Canada.



Drive Details - SanDisk Extreme II 240GB SSD




The SanDisk Extreme II comes packaged in a small attractive box that has a picture of the drive on front. The box is black and red with gold, red, and white lettering. The drive's capacity is listed along with a few attributes common to SSDs.




The rear of the box informs us the drive ships with a spacer and gives us the definition of a gigabyte in 10 languages. A yellow logo informs us that the Extreme II is backed by an industry-leading five year warranty.




SanDisk includes a stick-on plastic spacer for increasing the drive's overall thickness as well as a printed installation guide.




The top of the Extreme II's enclosure is formed from a single piece of black plastic. Centered on the top face of the drive is a black manufacturer's sticker with red and white lettering. The bottom and sides of the Extreme II's enclosure are formed from a single piece of stamped aluminum painted black. Centered on the rear face of the enclosure is a manufacturer's sticker that lists the drive's part number, serial number, capacity, and interface.




Here's what the SanDisk Extreme II 240GB SSD looks like completely disassembled. The Extreme II has a full sized PCB. The drive's controller, DRAM module, and NAND chips all make contact with a thermal pad thereby dissipating heat generated into the aluminum half of the enclosure. The other side of the PCB is devoid of any major components.



Desktop Test System OS Based Testing




Desktop Test System PCMark 8 Extended Testing




We are utilizing our ASRock Extreme 11 a/c Test Rig for our OS testing and our ASUS Maximus VI Extreme Test Rig for our PCMark 8 Extended Storage testing. Our ASUS Board provides superior performance and is the test bed we utilize for all our PCMark 8 Extended Storage testing; this will allow for a direct comparison to our other arrays for the purpose of determining our performance champion.


Drive Properties




The majority of our testing will be done with our test drive/array as our boot volume. Our boot volume is 75 percent full for all OS Disk "C" drive testing to mimic a typical consumer OS volume implementation. We're using 64k stripes for 2-4 drive arrays and 32k stripes for our 5-6 drive arrays. Write caching is enabled.


All of our testing includes charting the performance of a single drive as well as RAID 0 arrays of our test subjects. We are utilizing Windows 8.1 64-Bit for all of our testing.


This report will focus mainly on drive scaling in RAID 0 and what a kind of storage performance you will get as you add drives to your Z87 Lynx Point array. We're going to post screen shots of our 6-drive array's performance and chart a single drive as well as 2-6 drive arrays. Since we've already done a two-drive review of SanDisk's 240GB Extreme II, we are going to add our new PCMark 8 Extended testing regimen to this review as well.


We will compare how the Extreme II 240GB stacks up against the competition utilizing a two-drive array. We consider PCMark 8 Extended testing the best test ever devised to test a drive or an array. We utilize the results from PCMark 8 Extended Consistency testing to rank our drives/arrays.

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