i think the section you're referring too is when networker has a huge 
ammount of recovery information to process, which may fail if it cant load 
it all into memory, it is fixed by limiting the number of recovery 
processes it can allocate.

also correct me if i am wrong, but Networker doesnt perform a uasm walk 
for ndmp backups as it is not using uasm or save, but instead uses the 
native dump etc on the filer.
e.g. backup command: nsrndmp_save -T dump

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