From Array Suite Wiki

ArrayServer.cfg configuration in Option Section

Default value = OmicsoftDirectory\Temp

The temporary directory for Array Server.

Array Server may use up to 2-3 x the size of an uncompressed .fastq file in this folder for some complicated NGS tasks.

It is recommended that this directory be contained on a local drive (i.e. NOT a network drive) for fast read and write access. We would suggest use a drive with at least 100GB storage.