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Sata speed problem


Richie-Kotzen
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Hi, I have a problem on my microserver gen10+ .
Configuration:
Intel (R) Xeon (R) E-2236 CPU @ 3.40GHz
2x16GB DDR4 2666 HP 879527-091
1 nvme Samsung 970evo 1TB on PCIE adapter
4 Samsung 850evo 500GB SSD

 

I am attaching in photos the current configuration at the level of updates (everything should be updated).

The disks are currently configured in AHCI mode for run esxi 670.U3.10.6.0 (HPE image).
The first problem is that in ILO5 "System Information - Storage Information" the wrong size reported on SATA disks (they should be GB and not MB, but maybe it's just a bug).
The biggest problem is related to the writing speed is very low. I also tried with HDD, but write performance is much lower than what I get on other machines. Any idea what it could be?
I also tried to install the esxi 7.01 image, but the problem remains. I also tried to install windows 10 or windows 2019 server natively on one of the SATA disks, but the installation is not successful (after selecting the installation disk, I think it asks me for the sata controller drivers). If it can be a useful further test, I will try to install a windows operating system to understand if it is an esxi problem.
Thank you!

firmware_config.jpg

storage_config.jpg

benchmark_ssd.jpg

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Updated situation:
i installed Windows 2019 Server as main machine, so not a VM under esxi. Installed on the same sata SSD that was giving poor write performance under esxi. Under Windows 2019 Server, however, the performance is correct, in line with the performance of the SSD (550MB / s writing and 550MB / s reading). Do you have any idea how it can solve? Could it be a problem of non-optimized esxi SATA drivers? Yet I installed both 6.7 and 7.0.1 from HPE image.
Thank you all!

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Firstly, only VMware ESXi 6.5-U3 and 6.7-U3 are on the official HCL. Try both. If they work then it's probably a storage driver change in the newer images. Software raid is not available.

Secondly it must be in AHCI mode - have you doen this?

 

Having said this, I had the same issue with ESXi on the Gen10 but ESX wasn't supported so I just had to accept it and install Windows Server.
 

As VMware ESXi is supported on the Gen10+ then I would raise a support ticket with HP and ask them to resolve it. Don;t accept any rubbish about you not having supported hard drives ebcause they're not HP - that's an excuse and if you get it escalate the call.

Edited by Scepticalist
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Yesterday I opened a ticket with HP.  clearly not having supported HP disks they told me it's not their problem.  I had no doubts about the answer.  today I did some testing.  I started from ESX 6.5 up to 7.0.1.  The problem persists.  With windows 2019, however, the disks have perfect performance.  Clearly the controller is set to AHCI ( the raid is done by FreeNas that it returns the disks on iSCSI in ESXI). I think it's a HP driver problem ... I will wait for a new upgrade ... I have no alternative for now.

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All I can suggest is going back in the ESXi images until you get a driver that works - Google turns up an article from a few years back with an identical issue to yours where someone did this on Gen8 to get a driver that performs well.

 

https://communities.vmware.com/t5/ESXi-Discussions/Very-slow-acces-to-datastores-on-HP-MIcroserver-Gen8-Can-t-edit/m-p/2276368

 

Remember there are both VMware ESXi and HP ESXi install images so try both?

 

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I've tried everything, starting from 6.5 up to 7.01 (both HPE and standard images). All of them had speed problems (losing about 100MB / s reading and 300 to 400MB / s writing). In the end I found a solution, and to tell the truth it is also the ideal one for me. The gen10 + microserver has a software raid controller, so to see the disks on esxi, I had to configure the controller in AHCI mode. Initially I had created a FreeNas VM by passing it in RAW format disks. Now I have found a guide to be able to enable the SATA controller for passthrough. So I directly passed the full controller to the FreeNas VM, which gives me the disks in iSCSI. It has such a fantastic performance!

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  • 10 months later...
On 11/30/2020 at 9:39 AM, Richie-Kotzen said:

I've tried everything, starting from 6.5 up to 7.01 (both HPE and standard images). All of them had speed problems (losing about 100MB / s reading and 300 to 400MB / s writing). In the end I found a solution, and to tell the truth it is also the ideal one for me. The gen10 + microserver has a software raid controller, so to see the disks on esxi, I had to configure the controller in AHCI mode. Initially I had created a FreeNas VM by passing it in RAW format disks. Now I have found a guide to be able to enable the SATA controller for passthrough. So I directly passed the full controller to the FreeNas VM, which gives me the disks in iSCSI. It has such a fantastic performance!

Could you describe the steps in more detail? I recently bought gen10 plus and faced the same problems.

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I tested the performance of SATA on proxmox, also very bad results. What can be done with the performance of SATA drives? I have already tried all the options, Gen10 Plus disappoints me more and more. I have never had such problems with my Gen7 and Gen10.

2021-10-11 01_14_32.png

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