On Fri, 2017-06-30 at 11:49 -0400, Greg Dickie wrote: > Hi, > > I'm just trying to back up a large proprietary NAS to an LTO7 > library with one drive but finding it very difficult to get tape > spanning to work. The changer and drive seem to be configured > correctly and it was all working fine until we exceeded the size of > one tape and now whatever I seem to try from compression to splitting > seems to slow everything down incredibly. >
As long as you're using a big holding disk and reasonable size splits (10-20GB), I can't see how spanning itself could cause any slowdowns. Software compression would slow things down, possibly a lot, especially if you're just using gzip. You may have to provide more detail as to what exactly is slow.
