Serious problem with Windows Server 2012 R2

[philpw99]

I have a sever 2012 which really need acceleration in disk speed. It already has 2 SSD disks running as mirror.
I purchased the server edition of PrimoCache, and I tried PrimoCache 3.2 and 4, both give me the same error.
"Failed to start cache!" as below.

Primo2.png (91.6 KiB) Viewed 956 times

So I followed the instruction and increased the block size, but Primo only works when I lower the memory size to 2048mb and Block Size of 64kb, or 1024mb and Block Size of 8kb.
The server has 16GB of memory, and 13GB is free. I want to use 8GB as the cache but it's impossible for PrimoCache to use any L1-cache size larger than 2GB in it.
Even when the cache is working, it seems it's not actually catching any reading. Like below:

Primo1.png (120.03 KiB) Viewed 956 times

It only catch 836kb of reading , while the program already read tons of stuff.
I really wondering what caused the problem, why the program works so badly in Server 2012 r2? Any help will be greatly appreciated!

[janusz521]

Make sure you are caching the right disk. You can set the cache for several disks at once. The cache size limit is a bit surprising. If there is no bursty activity (it happens with servers) the issue may be related to Windows Server 2012 which is rather uncommon now.

[Support]

Do you run PrimoCache with administrative privileges? The drive D: is about 400GB, there should be no problem to using 4KB cache block or more than 1GB RAM cache.

[philpw99]

It works now !
I completely removed it 2 weeks ago and forgot about it.
Today I install the PrimoCache Server 4.0 in the same server. For some reason this time it works ! No need to set the block size above 8k.
I still don't know what exactly caused the problem. Last month I used exactly the same installation file. I disable the windows update, so it's not any windows update that fixed it. I am still very confused.

[Support]

Quite weird...we will keep an eye on this issue. Anyway, I'm glad that it works now.