SBS 2008: We use the SBS backup with usb external drives which get swapped every week. I was looking at the backup today because the daily email report said it failed. But the problem seems to be much deeper. Although the backup history shows that the backup succeeded on all the previous occasions, when I go to recover data, It will only let me recover from the last 2 days, then all the previous days are grayed out back until February when there are backups available on the other disk. On these days which are unavailable, the Time, Location and Status boxes are all blank as if no backup occurred on those dates. But like I say, the backup history shows a full sequence of successful backups. Can anyone explain this please?