Increase Read/Write Speed on PERC H200 - DEDIBOX LIMITED 4814

Hey All,

I've been using my DEDIBOX LIMITED 4814 since it was stocked by Online.net as a small Dev (Proxmox) server, I noticed when I got the server that the time it takes to create a VPS was a lot higher than my other servers with similar specs. I was just about to cancel the server when I was recommended to enable write caching on the RAID card.

My initial testing started with a DD test result of 80MB/s before enabling cache. Since enabling cache I've had a stable 122MB/s.

This fix isn't going to affect the overall performance by much but will help with files and programs that are regularly used.

In order to enable Caching on your PERC H200 RAID/DEDIBOX LIMITED 4814 you need to follow these steps -

First Run a DD test so you can compare results later -

dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync; unlink test

Now run the following:

1. Install unzip - yum install unzip | apt-get install unzip

2. Download the LSI Utility - wget https://repo.rmlh.uk/software/LSIUTIL-1.63.zip

3. UnZIP the Utility - unzip LSIUTIL-1.63.zip

4. cd to the Utility Directory - cd LSIUtil\ Kit\ 1.63/Linux/

5. chmod the Utility - chmod +x lsiutil.x86_64

6. Now run the Utility - ./lsiutil.x86_64

7. Enter the Number of MPT Port, In my case this is 1 then press Enter

8. Enter the Menu Number 21 for RAID Actions and press Enter

9. Enter the Change Volume Settings Section by entering 32 and pressing Enter

10. Enable Write Caching if it isn't already enabled by entering 1 and pressing Enter

11. Exit this menu by entering 0 and pressingEnter

12. Exit this menu by entering 0 and pressingEnter

13. Quit the Application by entering 0 and pressingEnter

Now run another DD test and your results should have improved -

dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync; unlink test

I hope this guide helped.

Please note - You are following the tutorial above at your own risk, this could cause data loss and possible damage to the drives and/or RAID card. I will NOT be help responsible for any damage or data loss caused by following this guide.