process big Illumina data

i want to procee the big data about 16s rRNA from Illumina.
when i use the below command:
mothur > unique.seqs(fasta=####.fasta)

i have got a file named :###.unique.fasta,but i could not a file named:
###.names

The file of ###.fasta is about 28 G.

what can i do?

thank you.

Are you following the MiSeq SOP: http://www.mothur.org/wiki/MiSeq_SOP?

Is there a file called ###.unique.names?

i could not find ###.unique.names.

Please post the contents of your logfile and the output of typing ls (unix/mac) or dir (win) at the terminal prompt in the folder you are running mothur from.

Pat