We have a 3PAR-8200 connected directly with FC to two DL360Gen10 servers.
The servers DL360Gen10 have the Windows Server Datacenter 2019 operating system installed. The two servers form a cluster, with only these two nodes. These two servers and the cluster service are used for virtualization, with the role of Hyper-V.
We also have 3PAR directly connected with FC to another cluster Windows 2012R2 , with two nodes, with exactly the same purpose, the Hyper-V service.
Since the installation of 3PAR in 2019, we have been contacting our partner, indicating the lack of performance of the storage equipment, comparing for example with an MSA-1040.
Several interventions were carried out, such as:
Volume configuration with Adaptive Optimization
Activation of Adaptive Cache
3PAR upgrade
Over these three years, we have increased the use of space reaching 80%, and the justification for the poor performance of the equipment would be justified by this reason.
After many tests, we decided to format both servers and configure a cluster again and present new volumes to verificate if solve the problem. When presenting a volume to the cluster, if it is not configured as CSV, the performance is great, but after moment we pass the volume to CSV, the speed drops drastically to about 20%.
This issue happens with Windows Server version 2012R2 and 2019 in our case.
Searching several forums, including HP, we found several reports with the same scenario and the same problem, and in none of them, we see a solution to the problem.
In our case, in the 2012R2 cluster, we reconnected our old MSA-1040, without SSD disks, and it has much better performance than the 3PAR volumes.
Any ideas?
