I've created a support case and scheduled a remote session this thursday.

Hello dfir, Did you test your environment with Eager Zeroed? Hi Vitaliy I'm sorry for the late reply. I have tried to make my guest that I use for testing use a thick provisioned VMDK, but the result is the same. I also tried updating the Starwind software to the newest one available (V8 build 1145...

Yes, no problem. I will do a test and let you know the result.

Hi Michael Sorry for the delay. All of my VMs are using disk type of Thick Provisioned Lazy Zeroed. I have previously tried to allocated extra (lots) of CPU and memory and it made no difference. Also note that when I test upon a RAM disk in Starwind the performance is same. I suspect that it is perh...

Hello dfir, Your RAID configuratin looks according to our recommendations. 1. Could you confirm that MTU are also configured at 9000 in VMware? 2. Please, browse video with tweaks in VMware if you have never been watched: https://www.youtube.com/watch?v=2_-TIpSyn2s&feature=youtu.be&t=1806 H...

I stand corrected :) I've managed to get additional performance out of the ESXi host and I now therefore do not believe that the bottleneck is within the Starwind/Microsoft server. My theory is now that the bottleneck is either in the VMware Software iSCSI Adapter and/or physical NIC related (perhap...

Hi Vitaliy Thank you for your answer. The RAID is made of: LSI 9265-8i (newest firmware) controller that has 8 x Intel DC S3500 300GB SSD drives directly attached to the controller. One RAID5 64K stripe size array with all caching disabled. Enabling caching seemingly makes performance worse. raid co...

Hi all I'm trying to max out performance in a simple setup, but it seems that I'm hitting some sort of a bottleneck and I cannot seem to find it. I have a simple setup consisting of two servers - a VMware ESXi v6.5 and a Starwind server. They are connected back-to-back using a single 10 GbE link. Sp...

Hi Chick3nfingding Have you checked your iSCSI NIC settings within Windows on the Starwind server? I saw a dramatical increase in throughput when I changed the NIC settings profile from the standard one called "Standard Server" to "Low Latency" (within the advanced options for th...