We are a small private school on a SMALL budget and had an HP 24x6 unit donated. It seems to work great and since we can't afford $500 per license for the 2 servers, we are using windows backup. So far the drive works fine, I inserted 5 tapes and 1 cleaner cartridge, set the cleaner cartridge and then moved the 5 tapes to "free" media. The problem is that when the backup runs and fills up the first tape, it says it's full and asks if we want to cancel. Shouldn't it load the next tape automatically? If not, what step am I missing?