On Apr 12, 2005 1:54 AM, Eric Winters <ewinters AT au1.ibm DOT com> wrote:
> 
> Dear All,
> 
> TSM Server 5.2.4 on AIX 5.2 with 6 GB memory. (p690 lpar)
> 3592 tape drives fibre attached.
> TSM Backup/Archive client 5.2
> 
> I have a large number of 2 GB files to archive directly to tape - the 
> files
> are within filesystems on a SAN storage device. If I mount the filesystems
> locally on my TSM Server and archive them, I get a rather disappointing 22
> MB/s when archiving to a single tape drive.
> 
> If I archive the same data in the same filesystems but by mounting them
> onto a remote AIX server and running the 'dsmc archive' command and send
> them over the Gb lan, then I get a far more satisfactory 37 MB/s (again,
> archiving to a single tape drive).
> 
> Why should performance archiving over the network be better than archiving
> locally? My remote server is similarly configured to my TSM Server - same
> version of AIX, backup/archive client, similar memory etc.


Is the tape drive on the same HBA as the SAN?

Kelly