I have a Dell Poweredge 840 which currently has a SAS 5i controller in it, which hosts two volumes over four disks - the first is a 250GB mirror with the OS on it, the second a 1TB mirror with the data on it. The performance of the controller has now got so bad (no write-caching unless you are feeling extremely brave due to no battery backup), it needs upgrading. So we are replacing it with a PERC 6i with battery backup.
I am trying to think of the best way of going about the upgrade. If I install the PERC then start up the OS to install the drivers, will it prevent the SBS from blue screening if I then take the SAS out and put the PERC in its place (having created the array again of course)? I have a horrible feeling if I try this, it will result in a boot-looping SBS that will require a reinstall from scratch.
The other option I suppose is to migrate the SBS into a VM, install the new controller and disks, then put VMware on it, then run the SBS as a VM. This is more tempting but I am wondering if it may be overkill (we wanted to get the whole server onto VMware anyway)?
Any advice you could give - especially if you've ever done the same thing as I'm about to do - would be appreciated.