Abstract: Techniques and systems for storing and retrieving data storage devices of a data storage system are disclosed. In some embodiments, inventory holders are used to store data storage devices used by a data storage system. When data is to be transacted with the data storage devices, mobile drive units locate appropriate inventory holders and transport them to a device reading station, where an appropriate device retrieval unit transacts the data. In some embodiments, each inventory holder includes a heterogenous mix of data storage device types, the layout of which may be calculated according to the specific mix allocated to a given inventory holder. After the data has been transacted, the data storage devices are returned to the appropriate inventory holders, and the inventory holders are placed by the mobile drive units in locations where they may be accessed in response to further data transactions.

Abstract: Described herein are techniques for optimizing gross cubic utilization of inventory space by compressing items into closer proximity. In some embodiments, the inventory system selects an initial force limit to which an item to be stored may be subjected. The inventory system may cause a robotic arm to grasp the item and to push that item into a determined storage location. The inventory system then pushes the item into the storage location while applying a force up to the initial force limit to the item. While monitoring the position of the item, the inventory system may detect that the changes in position of the item are decreasing or stopping and determine that the item is approaching its force limit. The inventory system then updates database records with the force limit associated with the item.

Abstract: Techniques and systems for storing and retrieving data storage devices of a data storage system are disclosed. In some embodiments, inventory holders are used to store data storage devices used by a data storage system. When data is to be transacted with the data storage devices, mobile drive units locate appropriate inventory holders and transport them to a device reading station, where an appropriate device retrieval unit transacts the data. After the data has been transacted, the data storage devices are returned to the appropriate inventory holders, and the inventory holders are placed by the mobile drive units in locations where they may be accessed in response to further data transactions.

Abstract: Described herein is an inventory management system and methods of operating a robotic arm assembly in which the level of compliance of the robotic arm assembly is altered in order to achieve a high gross cubic utilization. In at least some embodiments, a robotic arm assembly may adopt a low level of compliance when grasping an item. The inventory management system may identify an appropriate storage location for the item and move the item to that storage location. Upon reaching the storage location, the robotic arm assembly may adopt a higher level of compliance. The robotic arm assembly may then push the item against one or more other items in order to insert the item into the determined storage location.

Abstract: Techniques and systems for storing and retrieving data storage devices of a data storage system are disclosed. In some embodiments, inventory holders are used to store data storage devices used by a data storage system. When data is to be transacted with the data storage devices, mobile drive units locate appropriate inventory holders and transport them to a device reading station, where an appropriate device retrieval unit transacts the data. In some embodiments, each inventory holder includes a plurality of trays that are independently accessible to the device retrieval unit. After the data has been transacted, the data storage devices are returned to the appropriate inventory holders, and the inventory holders are placed by the mobile drive units in locations where they may be accessed in response to further data transactions.

Abstract: Techniques and systems for storing and retrieving data storage devices of a data storage system are disclosed. In some embodiments, inventory holders are used to store data storage devices used by a data storage system. When data is to be transacted with the data storage devices, mobile drive units locate appropriate inventory holders and transport them to a device reading station, where an appropriate device retrieval unit transacts the data. The inventory holders are configured such that any of the mobile drive units may interchangeably interact with any of the inventory holders and/or the data device reading stations. After the data has been transacted, the data storage devices are returned to the appropriate inventory holders, and the inventory holders are placed by the mobile drive units in locations where they may be accessed in response to further data transactions.