Starting with the V2.11 release the SunOS and Solaris versions of IRAF have been merged into a common system allowing for a single installation on a heterogenous network of Sun workstations. The basic installation is still the same with the exception of the added binaries and a bit more work in merging old configuration files if you are replacing two existing systems for each OS. SunOS and Solaris are supported as separate architectures (sparc and ssun). Sites may install only one or both architectures. We will discuss the installation and basic configuration of a multi-architecture system, detailed configuration is covered in the accompanying Sun/IRAF Site Manager's Guide.
The amount of disk space required to install IRAF depends upon the system configuration, primarily whether this is a multi-architecture installation and the number of layered packages installed on top of the core system. The main system, including both the core system and NOAO package sources, requires about 80 Mb, less if stripped after installation. The core system binaries for SunOS require about 22 Mb and the NOAO package binaries requires about 11 Mb, and 38Mb and 22Mb respectively for Solaris.