Transferring large files from one drive (USB or SATA to RAID) in my HP ProLiant ML150 Gen9 is slow. At the beginning we were thinking about the B140i controller – a pseudo-raid controller without any memory cache.
This is the original B140i performance and the improvement after upgrading to smart array p440/4gbFWC.
Raid configuration is RAID 10 with 4 x SSD 500GB drives on both cases.
Although improved, the problem was still present: When transferring large files, speed drops dramatically after a couple of minutes, from 400 MB /S and remains at 6-7 MB/s till the end of the transfer:
I tried without success:
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Clean install of Windows 2012R2
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Clean install of Windows 2019
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Upgraded all firmware and drivers of using the latest ProLiant Service Pack
This is perfomance while copying a file from P440/4GB volume to the same volume:
Now machine is running 3 VM with only 18% of free memory. Older tests was done without any VM running.
Best Answer
In HP Smart Storage Administrator: Active Writing Cache on the drive