Supermicro Box with a MegaRaid 9361-8i RAID Controller 12Gb/s 2GB Cache, with a mixture of SAS and SATA 6Gb/s 7200rpm disks. Plenty of memory and 2 multicore CPU's.
Disks are in a RAID0 Config, created a Datastore using the entire contents of the disks, try to subsequently upload a 5GB iso file to the new Datastore, copying at less that 10MB/s over a 1Gb/s Ethernet network.
Completely unusable, as far as i can see this LSI MegaRAID card IS on the VMWare HCL.
Any ideas whatsoever?
Standalone ESX host running 6.7U2.