Data storage is housed underground. Access is very limited to selected staff. The floor is fully air-conditioned, with only one desk in place for a service officer. Each centralised processing environment (mainframe) stores specific technical information; such as BAS, LOGIS, or IFMS data. All data on the mainframes are backed up every minute, with the backup being stored at another undisclosed location, for security purposes. The mainframe servers are able to dial out to report errors encountered. It only provides technical information to the suppliers, and not government data. The machines store all technical information. The risk of losing data is very low, due to the security steps taken by SITA.