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Dear Support-Community,
I am a big fan of the Optane Memory Cache concept. I currently run a system with a 4TB HDD and a 32GB Optane M.2 Module. The Intel RST gives me the opportunity to pin around 5.8 GB to the cache.
My questions are:
- How does the capacity to pin data to the cache scale with the size of the optane module? Is it linear or above linear? (E.g. would a 64GB Module give me =11.6GB or >11.6GB of space to pin data to the cache? If so, how much?)
- Anandtech used the 118GB 800p as an Optane Memory module and it seemed to work. Does every Optane Module connected to an M.2 slot work as Optane Memory? Is it supported by Intel?
- Is there any way to know about the cache hit rate? I would like to assess somehow how much I would profit from a larger cache with my typical workloads.
- What is the difference between the M10 models and the 800p? According to Anandtech, there is no difference, but if this is the case, it puzzles me that there is no 128GB (118GB) Optane Memory module, which I would be inclined to buy.
Thank you very much for any hints and support.
Best regards,
Thomas
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Dear Josh,
thank you very much for the support, I am looking forward to your update.
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Dear Josh,
I was unable to open the Intel Community Forums in my browser (only showed white page) and had to switch to another machine to reply.
Thank you very much for your answer concerning the scalability of the "pin" size with larger module sizes.
I still would like to learn more about the cache hit rate - Does the Optane software produce any statistics about the percentage of data that was sourced from the Optane Memory module vs. the hard drive in a given amount of time? This could give a good hint whether I should consider a cache size larger than 32 GB.
In an interview with PC World, Bill Leszinske, Intel's Corporate VP of Strategic Planning & Marketing for Storage, talked about "cache hit rates in the 90s" (in the 90 percent range, I assume), so there has to be some way to measure this.
Best regards,
Thomas
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Hi Thomas123,
Greetings from Intel® SSD Support Group.
This is a friendly reminder your case remains open, awaiting for your reply.
Please let us know if you might need further assistance.
Have a nice day.
Santiago A.
Intel® Customer Support Technician
Under Contract to Intel Corporation
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Hi Thomas123,
Greetings from Intel® SSD Support Group.
This is to let you know this case is being closed.
Please feel free to get back to Intel® communities, whenever you might feel necessary.
Have a nice day.
Santiago A.
Intel® Customer Support Technician
Under Contract to Intel Corporation

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