>I've been asked to write a document comparing Legato, Netbackup datacentre
>and TSM. Never having used Legato and Netbackup makes this a little
>difficult, has anyone already gone through this process recently and have
>any pointers to docs, reviews, comparisons etc?

Don't overlook the Whitepapers area as an information source:
http://www-3.ibm.com/software/tivoli/library/whitepapers/
"Comparing IBM Tivoli Storage Manager and VERITAS NetBackup in Real-World
Enterprise Environments".

  Richard Sims, BU