Remove quotes around size in the LUN section. The
UCL configuration is expecting a number here. Also, change
the suffix to 'Gb'. UCL format does recognize 'G' on its own,
but that uses a base 10 multiplier where 'Gb' uses a 2 power
multiplier.
Document the differences between valid suffixes when using
a configuration file in general syntax style or UCL format. The
valid suffixes for general syntax are those supported by expand_number(3),
those specifiers are K, M, G, T, P and E. The UCL format valid suffixes
are kKmMgG|b - for example, 4Gb is equivalent to 4gb.