InnoDB Hot Backup

[Waynn Lue]

I'm thinking of buying a license for this tool to do a migration from
one server to another, but it's been hard for me to find good
documentation on it after searching for awhile last night.  Is it
possible for me to migrate from a 32-bit to a 64-bit system across a
network?  How long would perceived downtime be?

Thanks for any help,
Waynn