Tag Archives: ssd

The SSD Endurance Experiment: They’re all dead

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The SSD Endurance Experiment represents the longest test TR has ever conducted. It’s been a lot of work, but the results have also been gratifying. Over the past 18 months, we’ve watched modern SSDs easily write far more data than most consumers will ever need. Errors didn’t strike the Samsung 840 Series until after 300TB of writes, and it took over 700TB to induce the first failures. The fact that the 840 Pro exceeded 2.4PB is nothing short of amazing, even if that achievement is also kind of academic.

via The SSD Endurance Experiment: They’re all dead – The Tech Report – Page 4.

If you write a lot of data, keep an eye out for warning messages, because SSDs don’t always fail gracefully.

Hybrid Drives Don’t Need More Than 8GB Of NAND

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The study essentially proves that, at least in the workplace, any amount of NAND memory larger than 10GB would have a limited impact on performance. Of course, data-intensive tasks like analytics or video rendering, where fresh data is being accessed all the time, would benefit from larger amounts of faster memory, but an average user is unlikely to notice the difference between SSD and SSHD.

via Seagate: Hybrid Drives Don’t Need More Than 8GB Of NAND.

How SSD power faults scramble your data

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The 2 SSDs that had no failures? Both were MLC 2012 model years with a mid-range – $1.17/GB – price.

via How SSD power faults scramble your data | ZDNet.

Yikes!

This paper reminds us that SSDs are very new technology whose idiosyncracies are still being engineered around. We’re still 5 years away from the average enterprise SSD being as reliable as the average enterprise hard drive is today.

f2fs: introduce flash-friendly file system

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F2FS is a new file system carefully designed for the NAND flash memory-based storage devices. We chose a log structure file system approach, but we tried to adapt it to the new form of storage. Also we remedy some known issues of the very old log structured file system, such as snowball effect of wandering tree and high cleaning overhead.

via LKML: =?utf-8?B?6rmA7J6s6re5?=: [PATCH 00/16] f2fs: introduce flash-friendly file system.

SSD prices in steady, substantial decline

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To get a better sense of the SSD picture, we’ve analyzed a mountain of pricing information dating from early 2011 to Tuesday. The folks at Camelegg graciously provided the data, which we’ve sliced, diced, and compiled in pretty graphs. Camelegg tracks prices at Newegg, which should give us a good sense of what’s going on in the overall market.

via SSD prices in steady, substantial decline – The Tech Report – Page 1.

SSDs have a ‘bleak’ future, researchers say

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“This makes the future of SSDs cloudy: While the growing capacity of SSDs and high IOP rates will make them attractive for many applications, the reduction in performance that is necessary to increase capacity while keeping costs in check may make it difficult for SSDs to scale as a viable technology for some applications,” Grupp, lead author of the study, wrote in a research paper.

via SSDs have a ‘bleak’ future, researchers say – Computerworld.

Because SSDs have no moving parts, the time needed to write and read data is more than 100 times faster than that of hard disk drives that use read-write heads on actuator arms to find data on a spinning platter. But as NAND flash circuitry continues to shrink in size, the performance gap with hard disk drives will become more narrow, Grupp said.