Hi guys,

this is actually not a TSM question but one for the hardware gurus. We are
running a backup under AIX using the savevg command and Ultrium 3580 tape
drives. With topas I can see a data transfer rate of about 1MB/sec. We
attached the drives via Fibre Channel and a SAN Data Gateway. The blocksize
of the drive was set to 2048 (since one of the SAN guys told me FC
transfers with a blocksize of 2048). I started savevg with "-b4" meaning to
write 4x512Byte blocks (=2048). With the mentioned speed the drives are
seriously crawling. Am I missing out something here? Any clues??

Thanks

Lars