![]() ![]() Prepare Linux kernel and userspace software Writes can be cached on the SSD using the writeback mechanism. Frequently accessed data is cached on the SSD to gain better read performance. The image below shows the idea of SSD caching. Random reads are done in about 42.000 operations per second, random writes in about 52.000. The 60GB Intel 330 can sequentially read about 500 MB/s and write about 450 MB/s. This traditional HDD does about 100 random operations per second. The 2TB WD can do about 110 MB/s of sequential reads/writes. To give bcache a try I bought a 60GB Intel 330 SSD. In my low power homeserver I use a 2TB Western Digital Green disk (5400 RPM). The last one is interesting, because it’s a patch on top of the Linux kernel and will hopefully be accepted upstream some day. There is Flashcache developed by Facebook, dm-cache by VISA and bcache by Kent Overstreet. Fanc圜ache by Romex Software (Windows, software)īut there is also a lot of development on the Linux front.Read圜ache by SanDisk (Windows, software, Writethrough).Dataplex by Nvelo (Windows, software, Write-back).Smart Response Technology (SRT) by Intel (hardware solution, Write-back).A couple of manufacturers are selling solutions to speed up your big HDD using a relative small SSD. ![]()
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