@pmoncho That seems like a complete overspend for the need. Although there might not be a better way
No, it keeps the boot off the data raid array.
You can do the same with something straight on the sata bus, but a minor expense gives you a dedicated boot raid array
I agree you want the boot/hypervisor not on the main array... but I'm assuming these BOSS setups aren't cheap.. definitely no where near as cheep as a USB stick or SD Card. Likely 100's of time more, if not 1000's more. that's all I am getting at.
BOSS card is just a card, it uses standard NVMe drives. So you are looking at $100 in drives retail for a pair of 250GB drives.
They don't have the issues of SD or USB with wear, thus removing an entire fail domain.
If you have a Dell server with SD boot, then you already had a BOSS card, so there is no difference in the expense.
OK - nice to know they are that reasonable... still tons more expensive than USB, but a ton safer too.
No one boots current hardware to USB. No one. It was only a thing for a couple years in fact.
/sigh - yes Jared, I'm aware of the change.