I presently use 16GB USB thumb drives on my (4) ESXi hosts. I am wondering if it makes sense to have a second USB drive attached, in the event of a failure on the primary. Does anyone else do this? When I do server maintenance, it's usually always in the evening via remote access. If I had a USB drive go down, that would be when I'd discover it. A second USB would give me something as a fall back. Just wondering what the consensus is on this.