February 21, 201214 yr Ever since I got my pro key I noticed a "cache drive" list along with my drives and parity drives. Am I meant to select a drive in there if I want some faster speeds? I have a 500GB hybrid HD/SSD in the machine from when I used to run Windows. Would something like that be ideal for the cache drive?
February 21, 201214 yr Author Ok so it seems that the drive needs to be equal to my parity drive which will be 3TB so that rules that out. I suppose I can make a share that just uses the 500GB drive?
February 21, 201214 yr No, the cache drive does NOT need to be the same size as the parity drive. I believe that use would be a warm spare just in case the parity drive failed you would have a drive ready to replace it. I use a 90GB SSD drive for cache. My parity and data drives are 3TB each. I mainly use my cache drive for faster write speeds and to keep the data/parity drives from spinning up. I write a bunch of small files to my unraid server throughout the day so it made sense to me to use the smaller SSD drive.
February 21, 201214 yr You can use that drive. I believe the hybrid part is only used for reading though so it will be somewhat of a waste of the drive capability. I use an old WD Blue drive for the cache. I use it to run apps moreso than to speed up writes but it does give me maybe around 2X the write speed. Peter
February 21, 201214 yr Author OK I guess my question is answered in that it gives a performance boost and it doesn't have to be the same size as the parity drive. Could an SSD drive be effectively used as a cache drive?
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