>After zoning the libraries in, installing 
> the device mappings files from Symantec support and what not,

What "device mapping files"? In all my years with Tru64, the only thing 
I've had to do to use a new tape drive was do a SCSI bus scan (hwmgr -scan 
scsi (v5) or scu scan edt (v4)). I'm only up to LTO3, though, so maybe 
LTO4 is a different beast.

What version of Tru64 are you running?

>Does anyone out there use Tru64 with LTO 3 or 4 
> drives? If so, what kind of throughput are you getting and (if you're 
> getting better than 50 MB/s) did you have to perform any weird voodoo to 

> get that throughput?

I'm running a block size of 256k on my LTO3 drives, 32 buffers (60k is 
probably low). With those settings I regularly see 90mb/sec+. The 
NetBackup buffer size and number of buffers are the only parameters I've 
manipulated. My servers are 3 CPU ES40s with 6gb RAM.

                                                                      - 
Bluejay Adametz
 
The person who has nothing to say often proves it. 

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