ACSLS is Oracle’s tape library server software that controls one or more StorageTek tape libraries for open systems clients. An Automated Cartridge System (ACS) is a tape library or a group of tape libraries connected through pass-thru-ports (PTPs). ACSLS manages one or more ACSs through “control path” commands sent across a network. The software includes a system administration component, interfaces to client system applications, and library management facilities.