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Possible to cache a hard drive with a 64GB *partition* from a 256GB SSD?

post #1 of 7
Thread Starter 
I have a Samsung 840 Pro Series 256GB SSD and a Seagate Barracuda 1TB 7200rpm 64MB Cache hard drive.

I want to cache my Seagate drive with my SSD, and I'm not sure if I can do so by partitioning 64GB of the SSD and then using that partition as an HDD cache. Is this possible or do I need a standalone SSD to cache an HDD?
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post #2 of 7
Which motherboard chipset (P68/Z77,...) do you have? For some Intel chipsets, there is a SSD caching feature which might be able to use the separate 64GB partition if the SSD is not the system drive.

And there is also a caching software which is currently in Beta which should work. It's called PrimoCache and you could try it in ReadOnly mode (in order to minimize risk of loosing data). I am using it since 2 weeks on 2 different systems and it works without problems so far (although I only use the RAM 1st level cache feature).
http://www.romexsoftware.com/bbs2/en-us/viewtopic.php?f=25&t=2136
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by BrainSplatter View Post

Which motherboard chipset (P68/Z77,...) do you have? For some Intel chipsets, there is a SSD caching feature which might be able to use the separate 64GB partition if the SSD is not the system drive.

And there is also a caching software which is currently in Beta which should work. It's called PrimoCache and you could try it in ReadOnly mode (in order to minimize risk of loosing data). I am using it since 2 weeks on 2 different systems and it works without problems so far (although I only use the RAM 1st level cache feature).
http://www.romexsoftware.com/bbs2/en-us/viewtopic.php?f=25&t=2136

I have a Sabertoth Z87
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post #4 of 7
Then you should check out the ASUS tools for the SSD caching. If it's not included there, you should download the Intel IRST (Intel(R) Rapid Storage Technology) software/drivers:
http://www.asus.com/Motherboards/SABERTOOTH_Z87/#support_Download_30

Then you can google for 'Intel Smart Response' and you will find some guides for enabled the SSD caching.
Here is one for example:
http://www.pcworld.com/article/248828/how_to_setup_intel_smart_response_ssd_caching_technology.html
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post #5 of 7
Quote:
Originally Posted by LeMonarque View Post

I have a Samsung 840 Pro Series 256GB SSD and a Seagate Barracuda 1TB 7200rpm 64MB Cache hard drive.

I want to cache my Seagate drive with my SSD, and I'm not sure if I can do so by partitioning 64GB of the SSD and then using that partition as an HDD cache. Is this possible or do I need a standalone SSD to cache an HDD?

Possible. Instructions can be found here:
http://www.overclock.net/t/1404323/guide-using-1-ssd-as-system-drive-os-and-acceleration-drive-raid-smart-response-technology-ssd-caching
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post #6 of 7
Thread Starter 
Thanks for the help! I'm curious, what performance difference will there be between caching an HDD with 32GB vs 64GB? I'm a total noob, and on the face of things I'm seeing "64MB cache" on my drive, so naturally I assume 32GB should be a massive improvement? Is the extra cache in 64GB worth double the SSD real estate? I apologize if I sounded really stupid just now tongue.gif
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post #7 of 7
Quote:
Originally Posted by LeMonarque View Post

I'm a total noob, and on the face of things I'm seeing "64MB cache" on my drive, so naturally I assume 32GB should be a massive improvement?

The 64MB are a much (500 times) smaller but actually faster cache since it's RAM and not a SSD. It's really only a very small buffer and exists primarily to avoid an extreme slowdown when many very small flies are written. It also gives quick access to the very recent small files.
Quote:
Originally Posted by LeMonarque View Post

Is the extra cache in 64GB worth double the SSD real estate? I apologize if I sounded really stupid just now tongue.gif

That depends very much on your usage pattern. Since the cache will always try to keep the most frequently (and recently) used data, a larger cache will primarily allow it to keep a bigger set of data.

Here are 2 very different usage scenarios:
- only a set of about 20GB data are used frequently (most other data are mostly backup or unused). In this case it will essentially not make a difference whether the cache is 24GB or 64GB in size.
- large quantities (> 100GB) of data are copied and deleted frequently (e.g. video editing). In this case, not even a 64GB cache will be very useful.

Also, the SSD cache primarily speeds up the read accesses. And the advantage is the bigger (compared to a HD) the smaller the files are and the more applications access the drive simultaneously.
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