Abstract: Technologies are provided for using an index in one region of a storage device to track modifications to data stored in another region of the storage device. The index can be stored in a first storage region using a first storage format, and data items can be stored in a second storage region using a second storage format. The index can map logical identifiers for data items to locations in the second storage region where the data items are stored. Instead of modifying a data item in the second storage device region, an entry in the index can be updated to mark the data item as deleted. Requests for data items can be reconciled using the index before returning the requested data items. Storage locations in the second region that are associated with index entries that are marked as deleted can be reclaimed and used to store additional data items.

Abstract: Technologies are provided for using an index in one region of a storage device to track modifications to data stored in another region of the storage device. The index can be stored in a first storage region using a first storage format, and data items can be stored in a second storage region using a second storage format. The index can map logical identifiers for data items to locations in the second storage region where the data items are stored. Instead of modifying a data item in the second storage device region, an entry in the index can be updated to mark the data item as deleted. Requests for data items can be reconciled using the index before returning the requested data items. Storage locations in the second region that are associated with index entries that are marked as deleted can be reclaimed and used to store additional data items.

Abstract: In various embodiments, a storage device includes a magnetic media, a cache memory, and a drive controller. In embodiments, the drive controller is configured to establish a portion of the cache memory as an archival zone having a cache policy to maximize write hits. The drive controller is further configured to pre-erase the archival zone, direct writes from a host to the archival zone, and flush writes from the archival zone to the magnetic media. In embodiments, the drive controller is configured to establish a portion of the cache memory as a retrieval zone having a cache policy to maximize read hits. The drive controller is further configured to pre-fetch data from the magnetic media to the retrieval zone, transfer data from the retrieval zone to a host upon request by the host, and transfer read ahead data to the retrieval zone to replace data transferred to the host.

Abstract: A solid state drive (SSD) device includes a Peripheral Component Interconnect-Express (PCIe) interface, a non-volatile storage media, and a memory that stores code, the code including an Advanced Host Controller Interface (AHCI) controller, and a Non-Volatile Memory-Express (NVMe) controller. The SSD device is operable to select one of the AHCI controller and the NVMe controller to process data storage commands between the PCIe interface and the non-volatile storage media.

Abstract: In various embodiments, a storage device includes a magnetic media, a cache memory, and a drive controller. In embodiments, the drive controller is configured to establish a portion of the cache memory as an archival zone having a cache policy to maximize write hits. The drive controller is further configured to pre-erase the archival zone, direct writes from a host to the archival zone, and flush writes from the archival zone to the magnetic media. In embodiments, the drive controller is configured to establish a portion of the cache memory as a retrieval zone having a cache policy to maximize read hits. The drive controller is further configured to pre-fetch data from the magnetic media to the retrieval zone, transfer data from the retrieval zone to a host upon request by the host, and transfer read ahead data to the retrieval zone to replace data transferred to the host.

Abstract: A solid state drive (SSD) device includes a Peripheral Component Interconnect-Express (PCIe) interface, a non-volatile storage media, and a memory that stores code, the code including an Advanced Host Controller Interface (AHCI) controller, and a Non-Volatile Memory-Express (NVMe) controller. The SSD device is operable to select one of the AHCI controller and the NVMe controller to process data storage commands between the PCIe interface and the non-volatile storage media.