I'm hosting a website on a RAID0 of 30 floppy drives
I'd expect the vast majority of IO requests to be served from the kernel's IO cache (we're talking 30 * 1.44MBs here so just under 50MB, trivial for even an old computer to hold in RAM), thus I wouldn't be surprised for it to be very fast and reliable as long as he sticks to read-only workloads - those would never actually touch the floppies beyond the initial read.