The VAX cluster at Myall Vale is an important and essential facility for research and for the use of SIRA TAC by the industry. Maintenance of both hardware and software is vital for provision a reliable service with high availability to SIRATAC users and researchers. Both the hardware and the software were maintained by Digital at their BASIC level with telephone support where neccessary. Digital continued the routine maintenance to our satisfaction, and responded promptly and well to all calls. No major problems were encountered.