We are using Arcserve 6.61 and a DLT 7000 tape drive (hardware compression enabled)for one of our backup solutions. Once this backup job hits about 80GB of data the job spans to a second tape and finishes off around 100GB. When reviewing the arcserve log it show that the media compression ratio for the job was 2.37. I am a bit confused because if this were really the case then roughly 43GB of compressed data would be written to tape throughout the course of the job, since a DLT 7000 can write 70GB of compressed data to tape then the job should not need to span to a second tape? Right? I am trying to figure out exactly what arccserve it telling me when it says "media compression ratio 2.37"? Any insight would be greatly appreciated!