We have storage Dell MD3220 SAS, RAID6 (16*HDD 10K) and HPE host ESXi 6.7U3
we need to get the maximum performance for sequential reading with 1MB block size and QueueDepth=1.
I have tested various controllers for virtual machines to determine the maximum read throughput (burst rate):
I am very surprised that the SATA controller has the maximum bandwidth at 1MB block size (and very low throughput for LSI Logic SAS).
Is there an explanation for this behaviour?