Dell (EMC ?) Unity Hardware w/opensource OS?

Hey there !
One of my customer will soon discard their Dell Unity (and probably also their VXRails, so two different platforms), and I was wondering if anyone was able to use some opensource OS to use those things ?
I’m looking for real world experiences before I recover 3 racks of metal scrap with locked hardware/software .

Cheers,

PorCus

I just stumbled on that one :
https://www.reddit.com/r/storage/comments/sq73zh/can_dell_emc_arrays_run_any_open_source_oses/

So : seems array could be used (with re-formating), but the heads probably not (because of software / hardware specificity ?)