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SSD as cache drive really worth the expense?


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I'm using a 1tb eads Drive as my cache now and I'm having transfer speed issues from my other machines in the network. I'm on 1 Gb network and just seems slow to transfer files to cache drive at 10 MB a sec that Mega Bytes not bits. Wondering if that EADS drive is the issue

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Your disk may be slow depending on if it needs to be jumpered and what version of unraid and hardware you are running so a bit more info please.

 

See: http://lime-technology.com/forum/index.php?topic=8780.0

 

As for cache drives, I don't use one. I get around 30mb/s writes to the array, with a hdd cache i was getting it up around 50-60. The only problem with ssd's are the size. Unless you want to copy one blu-ray rip to use straight I found I probably saved maybe 10 mins for a hdd cache, ripping the blu-ray to iso still took up to an 30-60 min so I found cache's not that much use.

 

Josh

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Your disk may be slow depending on if it needs to be jumpered and what version of unraid and hardware you are running so a bit more info please.

 

See: http://lime-technology.com/forum/index.php?topic=8780.0

 

As for cache drives, I don't use one. I get around 30mb/s writes to the array, with a hdd cache i was getting it up around 50-60. The only problem with ssd's are the size. Unless you want to copy one blu-ray rip to use straight I found I probably saved maybe 10 mins for a hdd cache, ripping the blu-ray to iso still took up to an 30-60 min so I found cache's not that much use.

 

Josh

 

I have jumpered all the EARS drives (Right out of the packaging) I'm starting to think it maybe just an issue with moving files from one hard drive to another. I don't really know. As I write this it is moving files to the unraid box at around 22 MB/s

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then i asume it will be the disk giving you problems...

I have seen other people on the forums who achieve 65+ speeds to the cache drive

so i am not the only one :)

 

try to exchange your cache drive for another one and see if it get better... you are sure you enabled the cache drive for all your usershares ?

otherwise you would be writing to your array directly and still then 10mb/s would be slow ... i write between 30 and 40mb's straight to my array ...

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