Hello all,
it's me again. 
I haven't found conclusive information on this topic, I although I found some suggestions here and there to disable verify.
Please consider this: a server is backed up to a dedup-device (OST) and that is copied to tape directly afterwards. The data on the tape is verified.
I'd say that inserting a verification stage for the data on the deduplication device is superfluous as long as it is verified after another duplication, because, I suppose, verification checks the same checksums as if reading from the device and vice versa, so the duplication to tape is already equivalent to a verification.
Am I right or wrong?
I think this is quite important, because the default template's setting - to verify immediately after a backup and then duplicate - costs a lot of time and ressources.
Thanks in advance, Manuel