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I am scratching my head on this issue so it's time to ask the community!

Below is a benchmark after a fresh install of Windows Server 2012

This is pre bios update performance on a RAID 1+0 array w/ 8 x 800 GB SSD's

This next picture is a benchmark I happened to do AFTER updating my BIOS and controller firmware.

This is post bios update

  • Layout RAID-10 Size
  • List item 2978.50 GB
  • Span Depth 1
  • Block Size 512 bytes Bus
  • Protocol SATA
  • Media Type SSD
  • Read Policy Read Ahead
  • Write Policy Write Through
  • Stripe Size 64K
  • Disk Cache Policy Default

I have tried all possible combinations of Read cache policy, write policy and disk cache with little to no change. I believe the cache on the controller is roughly equal to the SSD's performance by itself.

This is a brand new machine fresh out of the factory and an UPDATE made this happen. Dual 3Ghz Xeon's and 192GB RAM

Any ideas what might have changed?

EDIT: I also re-installed the old BIOS and still am not getting the previously mentioned performance.

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The H730p has 2GB cache. To test the speed you will have to use file with size bigger than 2 GB. If the size is less like in your case ( just 1 GB ) the results will be very inconsistent. Actually you are testing the controller cache speed.

Data Consulting Group - tech support

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  • I will be sure to do that! Makes sense.
    – Captain Garry
    Commented Jan 18, 2017 at 21:07

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