Very slow IO installing opnsense

[Jasonbrown90]

I'm following the instructions for installing opnsense from the current DVD image into a qcow disk image and it's unbelievably slow. As in, after 18 hours it's still only 57% of the way through copying files from the DVD image to the hard disk. Is this some problem with setup, or is that simply how long it takes?

I'm running Eve-NG Pro 4.01-16. This is the only node running on it.
Eve is installed as a VM, running on an ESXi 6.5 host https://19216801.onl/ https://routerlogin.uno/.
The host is a ProLiant DL385p Gen8, with two AMD 6344 12 core CPUs and 256 Gb RAM. It's running a couple of other VMs but nothing too taxing.
The Eve VM has 8 cores and 24Gb RAM, but with just a single node running it's not coming close to CPU or RAM limits.
Initially it was running on local RAID of HDDs, but I moved the VM onto shared storage running on an all-flash TrueNAS core box, where it's currently the only VM on the storage so not having to compete with other use, but that made no difference.

I'm assuming the issue is with qemu and disk IO? Is there anything I can change on the system or in the opnsense definition file to make it behave better?
Other images seem to work OK but they tend to be much smaller.

[Uldis (UD)]

First, the eve pro version is 4.0.1-65 now,
second this slowness can be related to your slow HDD where the eve is installed
NAS or DAS is not supported for EVE
https://www.eve-ng.net/index.php/docume ... quirement/

Simply NAS or DAS is ok for database holding, but not for operational use, I/O is too slow on it