kgbu/SSD4LinuxSVR.md

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SSD for Linux server

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SSD4LinuxSVR.md

referred sites

http://techtarget.itmedia.co.jp/tt/news/1303/21/news02.html : basics on SSD deployment
http://oopsops.hatenablog.com/entry/2012/05/24/164941 : general tips / trim command availability / RAID not recommended
http://www.bit-integrity.com/2011/11/ssd-performance-tips-for-rhel6-and.html : general tips - SSD performance tips for RHEL6 and Fedora
http://d.hatena.ne.jp/sh2/20110123 : visualize trim command

buyers voice

http://shop.tsukumo.co.jp/goods/0405786629016/201405000000000/ is recommended by https://twitter.com/htaira/status/504523337725272067

cost performance

on AWS : $0.12 for 1GB x 1 month (usual magnetic EBS volume is $0.08) in ap-northeast region : plus, $0.08 for 1M IO request in 1 month (see AWS pricing tips : http://www.slideshare.net/kazukiueki76/20130413-jaws-hokurikuebslt ) EBS is network volume, so, IO block size(about 64KB) differ than that of OS. There is no SSD/Magnet specific comparison article.

use cases

Random access : database storage (store larger data than memory)
immediate/predictable response time : high IOPS storage (queue)
data mining

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