Before i saw this, I testet several things to get around the issue. I managed to hotswap one and one ssd and used f5 in http storagemanager. Then i got all m4 reconized. I set up all in raid-0. Benched, an got numbers from only one drive! Still all was set up in raid-0. I booted, and the array was found. Tested again, and still 510 MB/s read... Strange