The reason that you see 100G is simple, when the client did already the
compression, the compression on the drive is around 0%, so that's why you
see no compression on tape.

There is not a lot of difference between compression by client or by drive.
So, if you have enough networkbandwidth, it's better to compress by drive,
that's faster, becaurse you need less proccesorcycles on the client;
drivecompression is for "free". And we dutch like that ;-)

Maurice van 't Loo
The Netherlands