XLS is Qualstar’s Simply Reliable™ highly modular enterprise library system. It delivers new levels of density, flexibility, scalability and ease of use, coupled with our proven record of reliability and value. If your need is for large tape storage capacity with very high throughput capability, the XLS‑832700 is the right choice of Library Resource Module (LRM) for you. In a multi-unit configuration with XLS‑89000 Media Expansion Modules, library capacity can be expanded to more than 6,300 tapes – see XLS Configurations.
XLS is Qualstar’s Simply Reliable™ highly modular enterprise library system. It delivers new levels of density, flexibility, scalability and ease of use, coupled with our proven record of reliability and value. XLS‑8161100 is the higher capacity member of the XLS family, and can be expanded in a multi-unit configuration to hold about 7,500 tapes – see XLS Configurations.
Used in conjunction with either type of XLS Library Resource Module, the XLS-89000 MEM unit provides the ability to build large XLS library systems. When an LRM unit and a MEM unit are attached side-by-side, the patented Compass Architecture of the LRM’s robotic tape handler enables it to directly access tapes in the carousel storage slots of the MEM unit. Alternating LRM and MEM units may be ‚daisy chained‘ to achieve a tape capacity of as many as 7,500 cartridges.
The two types of Library Resource Modules, XLS‑832700 and XLS‑8161100, may be used as stand-alone libraries or they may be used in conjunction with XLS‑89000 Media Expansion Modules to build very high capacity libraries.
Qualstar’s patented Compass Architecture allows the robotic tape handler in each LRM to rotate through a full 360 degrees, enabling it to access tapes from the slots of one or two MEM units attached to the sides of the LRM, as well as from the LRM’s own internal slots. This combination of Compass Architecture and Qualstar’s patented high-speed carousel technology offers several advantages:
High reliability resulting from the use of separate robots in each LRM, each of which never has to travel more than 21″ laterally.
Easy library expansion, as no change is required to the tracks on which the tape handler robots travel. (Note: Some competitive systems require track replacement during library expansion, to enable a single robot to traverse across multiple cabinets.)
Very fast tape seek times, because carousel rotation and robot positioning take place concurrently.
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