摘要:
A system for storing data includes two or more drive mechanical modules configured to store data, one or more drive control modules coupled to the drive mechanical modules, and a data control module. The drive control modules control mechanical operations in the drive mechanical modules. The data control modules access data on the drive mechanical modules.
摘要:
Methods and systems are provided herein that facilitate cost-effective and reliable data identification in an archival data storage system. In an embodiment, a data object stored in an archival data storage system is identified by a data object identifier which encodes storage location information that may be used to locate a data object stored in an archival data storage system that reduces the cost to store a global index. The data object identifier may also encode policy information such as access control information usable for validating subsequent access to the data object, payload validation information such as size and digest usable for verifying the integrity of the payload data, metadata validation information such as error-detection codes usable for validating integrity of the data object identifier and other information.
摘要:
Methods and systems are provided herein that facilitate cost-effective and reliable data identification in an archival data storage system. In an embodiment, a data object stored in an archival data storage system is identified by a data object identifier which encodes storage location information that may be used to locate a data object stored in an archival data storage system that reduces the cost to store a global index. The data object identifier may also encode policy information such as access control information usable for validating subsequent access to the data object, payload validation information such as size and digest usable for verifying the integrity of the payload data, metadata validation information such as error-detection codes usable for validating integrity of the data object identifier and other information.
摘要:
Techniques for implementing a data management scheme for optimizing data storage are described herein. A deletion quantity or other metric relating to deletions of data within a first storage zone are tracked. Upon detection that the tracked deletion metric meets certain criteria, the data within the first storage zone are moved to a second storage zone. A verification of the data to be moved is also performed, and if such verification indicates that at least a portion of the data is corrupted, routines repairing and/or restoring at least the corrupted portion are initiated.
摘要:
A data storage system includes one or more hard disk drive systems and an air moving device. The hard disk drive systems may include one or more drive mechanical modules that store data and a drive control module electrically coupled to the drive mechanical modules. The drive control modules may control mechanical operations in the drive mechanical modules. The drive control module includes a circuit board assembly and heat producing components coupled to the circuit board assembly. Air passages on each side of the printed circuit board assembly allow a stream of air to flow across heat producing components on at least one side of the printed circuit board assembly.
摘要:
Methods and systems are provided herein that facilitate cost-effective, scalable and reliable archival data organization and management. In an embodiment, data are redundantly encoded and stored to provide data reliability. Further, encoded data may be stored in self-describing storage entities that provide information describing data stored therein. Information provided by self-describing storage entities may be used to construct a limited map that is usable to facilitate data placement and data location services during data storage and retrieval. Data reliability and durability is provided because information about data stored in the system is mostly contained in the storage entities themselves. Cost efficiency is provided because only a limited map is provided for efficiency purposes instead of a potentially large global index data structure.
摘要:
A system for storing data includes a rack, one or more data storage drive assemblies coupled to the rack, and a data control module coupled to the rack. The data storage drive assemblies include one or more drive mechanical modules configured to store data and one or more drive control modules coupled to the drive mechanical modules. The drive control modules control mechanical operations in the drive mechanical modules. The drive mechanical modules and the associated drive control modules are separable from one another without removing the other module from the at least one data storage drive assembly.
摘要:
Embodiments of the present disclosure are directed to, among other things, validating the integrity of received and/or stored data payloads. In some examples, a storage service may perform a first partitioning of a data object into first partitions based at least in part on a first operation. The storage service may also verify the data object, by utilizing a verification algorithm, to generate a first verification value. In some cases, the storage service may additionally perform a second partitioning of the data object into second partitions based at least in part on a second operation. The second partitions may be different from the first partitions. Additionally, the archival data storage service may verify the data object using the verification algorithm to generate a second verification value. Further, the storage service may determine whether the second verification value equals the first verification value.
摘要:
Methods and systems are provided herein to allow efficient management of data flowing in and out of an archival data storage system. In an embodiment, storage entities keep very little state information in memory to provide higher throughput. Further, storage entities may send data in large chunks to facilitate high throughput. Techniques such as batching and coalescing may be used by various storage entities to provide efficiency.
摘要:
Embodiments of the present disclosure are directed to, among other things, managing power of one or more data storage devices. In some examples, a storage service may obtain a schedule associated with enabling different storage devices at different times. The storage service may also identify a request of a batch of requests for accessing the storage devices. In some cases, the storage service may also determine which storage device to activate based at least in part on the schedule and/or the request. Further, the storage service may manage power of a storage device based at least in part on the determination of which storage device to activate.