The Linux 3.9 kernel (made available on April 28, 2013) introduces SSD caching. The kernel’s Device mapper now includes a cache target called dm-cache that enables SSDs or other storage device to be used as a cache for a hard drive. It essentially speeds up data writes and reads as it allows the faster SSD to first cache data and then transfer it to the slower hard drive.
Linux SSD caching (dm-cache)
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Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.
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