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Buffer Sizes + LTO3 Speeds

Level 4
Has anyone created communication buffers above 256kb on windows server 2003 clients + media servers and similarly on a redhat linux master server. I have found various support articles all referring to the 256kb value for the different buffers that can be set for performance tuning.

I have found this has provided a noticeable improvement in the kb/secs on backups being streamed to LTO3 drives.

Any information or help would be appreciated, also what kinds of speeds are you getting on LTO3 fibre connected tape drives.

I am seeing speeds ranging from 10,000kb/sec to 40,000kb/sec on multiplexed jobs.

Level 6
Here is a link to a previous thread with a fair amount of good data on this topic.