I found the process I had used previously. Here it is here. Summarized below.
Make sure the VM in question is shutdown.
From the console
xe vm-shutdown uuid=<UUID of Your VM>
xe vbd-list vm-uuid=<UUID of Your VM> params=uuid,type
xe vbd-destroy uuid=<UUID of Your CD/DVD> Of critical importance do not select Disk, ensure you select the UUID of the cd
Repeat step 4 as many times as you have CD's that are unusable.
Reboot the VM and add the device again.
Does it have better performance & is it easier to setup?
That is all dependent on how comfortable you are with software / hardware raid.
Even for software RAID experts, hardware RAID is easier.
well yeah - it's practically plug and play - so few options.
Plus, in hardware RAID (assuming the chassis supports it) you get hot swap, something you don't get with Software RAID.
All enterprise software RAID has hot swap and always has. Only FakeRAID doesn't offer that and even that sometimes does. Hot swap is basically ubiquitous. Even ridiculous Windows software RAID has hot swap.
excuse me, I used the wrong term - I meant Blind swap - the lack of need to tell the OS to demount the drive before you pull it from the system.
You can create a basic backup schedule and de-activate the compression, then run the job manually. You'll have an export without compression.
When I was running my test, it seemed the exporting directly from XC was quicker than running a one time backup from XO of the same VM to the same location. The export of a small VM (I set it up just for testing this) was about 6 minutes, and the backup was 13.
But it sounds like what you are saying is that it should have been the opposite.
On a somewhat unrelated note, thanks for getting me to look at the /var/log directory on the XenServer here. Had a bunch of old logs clogging things up (500MB on the tiny little root partition.) Moved those off to my workstation for now, probably need to take some time and see what's going on.