Networker 8.0 has the following new feature, according to the release notes:
LTO device default block size increases to 256 KB
In NetWorker 8.0 SP1 and later, the default block size for an
LTO device increases from 128 KB to 256 KB. When NetWorker
labels a new or used volume in an LTO device and the Device
block size attribute of the device is the handler default, then
the label operation uses a 256 KB block size. Increasing the
default LTO block size results in Data Domain VTL deduplication
ratios improving by up to 15%, and physical tape device write
speed over higher-latency SAN links improving by an average 30%.
Note: Volumes will not write at the new block size until the
volume is labeled with NetWorker 8.0 SP1.
Now, after we wrote some LTO tapes with the new Networker, I would like to see what block size was used.
I did not find a NMC dialogue to query this tape attribute, nor does mminfo provide information about the actual block size written.
Thanks for any assistance,
Solved! Go to Solution.