How much does HDD cache matter with Linux softraid?

Posted by Jawa on Server Fault See other posts from Server Fault or by Jawa
Published on 2010-04-20T16:34:52Z Indexed on 2010/04/20 16:43 UTC
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disk-cache

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software-raid

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linux

I'm in a process of renewing/expanding my disk sets, but not quite sure what kind of disks to get, cache-wise.

What difference does disk cache amount of 16/32/64MB do, in capacities of, say, 1/1.5/2TB SATA disks? The disks will be used in a webapp server and in a media workstation, with Linux's softraid in raid-1/raid-5 configurations. Note, that as both purposes are purely for a hobby, the pricetag for a dozen of disks is a big issue.

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