1219 results about "Cloud storage system" patented technology

The disclosed embodiments disclose techniques for managing a global namespace for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in a cloud storage system; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. Furthermore, a global namespace for the distributed filesystem is also split across these cloud controllers, with each cloud controller “owning” (e.g., managing write accesses for) a distinct portion of the global namespace and maintaining a set of namespace mappings that indicate which portion of the namespace is assigned to each cloud controller. During operation, an initial cloud controller receives a request from a client system to access a target file in the distributed system. This initial cloud controller uses the namespace mappings for the global namespace to determine a preferred cloud controller that will handle the request.

The present disclosure relates to a distributed information storage system which functions as virtual cloud storage overlay on top of physical cloud storage systems. The disclosure discloses transparently solving all the data management related security, virtualization, reliability and enables transparent cloud storage migration, cloud storage virtualization, information dispersal and integration across disparate cloud storage devices operated by different providers or on-premise storage. The cloud storage is owned or hosted by same or different third-party providers who own the information contained in the storage which eliminates cloud dependencies. This present disclosure functions as a distributed cloud storage delivery platform enabling various functionalities like cloud storage virtualization, cloud storage integration, cloud storage management and cloud level RAID.

The disclosed embodiments disclose techniques for executing a cloud command for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. During operation, a cloud controller presents a distributed-filesystem-specific capability to a client system as a file in the distributed filesystem (e.g., using a file abstraction). Upon receiving a request from the client system to access and / or operate upon this file, the client controller executes an associated cloud command. More specifically, the cloud controller initiates a specially-defined operation that accesses additional functionality for the distributed filesystem that exceeds the scope of individual reads and writes to a typical data file.

The disclosed embodiments provide a system that distributes data for a distributed filesystem across multiple cloud storage systems. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers cache and ensure data consistency for the stored data. Whenever each cloud controller receives new data from a client, it outputs an incremental metadata snapshot for the new data that is propagated to the other cloud controllers and an incremental data snapshot containing the new data that is sent to a cloud storage system. During operation, data stored in the distributed filesystem can be distributed across two or more cloud storage systems to optimize performance and / or cost for the distributed filesystem.

The disclosed embodiments disclose techniques for restoring an archived file in a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. Furthermore, cloud controllers may archive infrequently-accessed files in an archival cloud storage system. During operation, a cloud controller receives a request from a client system to access an archived file, and restores this archived file from the archival cloud storage system.

There is disclosed a method for use in managing databases in data storage systems comprising a plurality of nodes. A request is received to provision storage for a specified application intending to use a database. Based on application-awareness, the storage system is provisioned for storing the database in response to receiving the request. Database tables are distributed across the nodes based on a forecasted first I / O profile between application and database. Information is captured in connection with the activity between the application and database. A second I / O profile is determined based on the captured information. The second I / O profile is an actual in-running I / O profile between application and database. The first I / O profile and second I / O profile are compared. The database tables are re-organized on the nodes based on the comparison identifying a discrepancy between first and second I / O profiles such that storage system is rebalanced.

The disclosed embodiments provide a system that processes data. The system includes a first client that encrypts a first set of data, uploads the encrypted first set of data to a volume on a cloud storage system, and creates a commit record of the upload. The system also includes a synchronization server that verifies access to the volume by the first client and includes the commit record in a change set containing a set of commit records associated with the volume. The synchronization server also signs the change set and provides the change set for use in synchronizing the upload with a second client.

A method for providing access to objects associated with a particular client in a cloud storage system is disclosed. The method includes the steps of establishing a connection with a user, providing a client namespace associated with the client to the user, where the client namespace represents objects stored on the cloud storage system and objects stored on a private storage system apart from the cloud storage system, receiving a request from the user to access an object stored on the private storage system, and providing information to the user to facilitate access to the object stored on the private storage system by said user. Other systems and methods are also disclosed. Important advantages of the present invention are facilitated by separating the logic for user access (control plane) from the actual storage (Storage plane). Private file system access can still be managed from the cloud, while keeping the client data private.

The disclosed embodiments provide a system that archives data for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers cache and ensure data consistency for the stored data. During operation, a cloud controller receives a request from a client for a data block of a file stored in the distributed filesystem. Upon determining that the requested data block is not currently cached in the cloud controller, the cloud controller sends a peer cache request for the requested data block to a peer cloud controller in the distributed filesystem.

A collaborative cloud DVR system (ccDVR), which includes a cloud storage system and a plurality of participating DVR client devices, acts collaboratively as a single communal entity in which community members authorize each other to upload, remotely store and download licensed content for time shifted viewing, in a manner which rigorously protects legal rights of the content owners while overcoming the potential physical obstacles of limited bandwidth, power failures, incomplete uploads / downloads of content, limited cloud storage capacity, etc. The collaborative cloud DVR community collaboratively shares bandwidth and cloud storage capacity among DVR viewer / users with each owner / user of a DVR client device authorizing his or her individual DVR client device to be utilized by a cloud storage system server and any other owner / user of a DVR client device in the respective service community, and receiving similar permission in return to promote the convenience of cloud storage in an authorized manner.

The invention relates to the technical field of Internet information, in particular to a cloud storage system and an implementation method thereof. The cloud storage system comprises more than one metadata server sets and a plurality of data block storage node sets, wherein metadata server sets manage the whole distributed file system, respond an access of a client to a file, receive a writing request of a writing client and distribute the writing request to a storage block or receive a request of a reading client for reading a file and return to a position of a block corresponding to the file; and the reading client reads file blocks from corresponding blocks and combines the file blocks. In a system, the file is divided into one or more blocks; the blocks are scatteredly stored in the data block storage node sets; and storage nodes create, delete and copy the file blocks under the command of metadata servers. In the cloud storage system and the implementation method, the safety and the transmission efficiency are improved due to block redundancy distribution and block balance distribution, and the congestion probability is reduced. The cloud storage system and the implementation method are widely applied to cloud storage systems of enterprises.

The invention relates to a network-based PB level cloud storage system and a processing method thereof. The network-based PB level cloud storage system comprises a main control server, a storage server cluster and a client side which are operated through an internal exchange, wherein the main control server is used for providing the directory information and the meta data information for a cloud storage client side and monitoring the storage server cluster; the storage server cluster comprises a plurality of storage servers used for data storage; the client side is used for providing the virtual disc service for a cloud storage client machine, submitting an operation request of the cloud storage client machine to a virtual disc to the main control server and reading / writing the file data from the storage server, and a client-side module is arranged on the cloud storage client machine. The invention is easy to expanded and is convenient to manage, solves the problem of storage island, can construct a cloud storage file system provided with the dynamic load balancing capability and the online backup and automatic recovery functions and capable of being expanded on demand on a general-purpose low-performance PC (personal computer) cluster.

The invention relates to a ciphertext cloud storage method and system. In the ciphertext cloud storage method system composed of at least one client terminal and a cloud terminal server, the ciphertext cloud storage method comprises the steps that (1) a user adopts a ciphertext and / or a plaintext to conduct data synchronism on the client terminal in the process of data storage and selects an encryption algorithm for the ciphertext; (2) authentication parameters provided based on the identity of the user is used for generating a master key, synchronous data of the ciphertext are encrypted on the client terminal through two-level keys comprising the master key and an encryption and decryption key, and the master key is backed up; (3) the ciphertext and a ciphertext index are synchronized on the client terminal and a cloud terminal, or a plaintext index is established after synchronous data of the plaintext are synchronized on the cloud terminal and the client terminal; (4) the plaintext and / or ciphertext is / are stored in a local private cloud storage server or in a storage server of a cloud storage provider according to a mount point requested by the user. By the adoption of the ciphertext cloud storage method and system, the data cannot be lost when the terminal is lost, if protection is inappropriate, only the ciphertext form of a file is damaged, and the ciphertext cloud storage system can dock with multiple cloud server providers.

The disclosed embodiments disclose techniques that facilitate of avoiding client timeouts in a distributed filesystem. Multiple cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem in a local storage pool. During operation, a cloud controller receives from a client system a request for a data block in a target file that is stored in the distributed filesystem. Although the cloud controller is already caching the requested data block, the cloud controller delays transmission of the cached data block; this additional delay gives the cloud controller more time to access uncached data blocks for the target file from a cloud storage system, thereby ensuring that subsequent requests of such data blocks do not exceed a timeout interval on the client system.

A high tier storage area stores a stub file and a lower tier cloud storage area stores the file corresponding to the stub file. When a client apparatus requests segments of the file from the high tier storage area, reference is made to the stub file to determine a predicted non-sequential pattern of requests to the segments by the client apparatus. The high tier storage area follows the predicted non-sequential pattern of requests to retrieve the segments of the file from the cloud prior to the client apparatus actually requesting the segments. As such, the file may be efficiently provided to the client apparatus while also efficiently storing the file on the lower tier cloud storage area.

The invention discloses a disaster recovery cloud storage system construction method based on a block chain technology. The block chain technology is introduced in a cloud storage system construction process. The characteristics of decentration and de-trust of the block chain technology are used to realize the distribution autonomy of storage nodes in a cloud storage system and data exchange and data sharing between the storage nodes based on a consensus algorithm. Compared with the current mainstream centralized cloud service system, the method has the advantages that network nodes can establish many-to-many rather than one-to-many contact relationship, which can greatly improve the transmission efficiency of data; and in the processes of data storage, exchange, upload and download, data block packaging and anonymous exchange and an asymmetric encryption algorithm are used, which greatly guarantees the safety and reliability of the entire ecological chain of data cloud storage. Compared with the current mainstream centralized cloud service system, the method provided by the invention has the advantages that on the basis of improved data safety, the operation efficiency of the system is greatly improved, and the operating cost of a cloud storage service is reduced.

The disclosed embodiments provide a system that archives data for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers cache and ensure data consistency for the stored data. During operation, a cloud controller determines that a cloud file in a previously stored data snapshot is no longer being actively referenced in the distributed filesystem. The cloud controller transfers this cloud file from the (first) cloud storage system to an archival cloud storage system, thereby reducing storage costs while preserving the data in the cloud file in case it is ever needed again.

A distributed cloud storage system includes a cloud storage broker logically residing between a client platform and a plurality of remote cloud storage platforms. The cloud storage broker mediates execution of a cloud storage process that involves dividing a data item into multiple portions and allocating the portions to multiple selected cloud storage platforms according to first and second rules defining a key known only to the cloud storage broker or to the client. At some later time when it is desired to retrieve the data item, the key is retrieved from storage and the rules are executed in a reverse fashion to retrieve and reassemble the data item.

The invention belongs to the technical field of computer storage, and provides a safe storage method based on a plurality of cloud storage systems and a system thereof. The method and the system can achieve the purpose that in the plurality of existing cloud storage systems, safety of data and metadata can be guaranteed at the same time. The safe storage method comprises a step of data writing operation and a step of data reading operation, wherein the step of data writing operation comprises the sub-steps of data partitioning, data encryption, redundancy encoding, digital signature, sharing processing, and data storage. The step of data reading operation comprises the sub-steps of metadata partition file decryption, digital signature inspection, redundancy decoding and cipher text data block decryption. The safe storage system comprises an encryption and decryption coding module, a redundancy encoding module, a secret sharing module and a digital signature module. By means of the method and the system, metadata privacy and high availability can be guaranteed, and meanwhile, a user does not need to store any metadata information for indexing and data query.

The invention discloses a security cloud storage system based on increment synchronization. A three-tier architecture of client-intermediate server-private cloud terminal is adopted, and data security is guaranteed by multiple security protection technology. After being blocked and encrypted, a user file is transmitted to a cloud terminal through an SSL (security socket layer) security transmission protocol; after finishing the work of user management and key management, the intermediate server terminal adopts a mutual authentication mechanism and an access control mechanism to realize the safe data share so as to completely prevent original data from leaking from the server terminal; the binding of the file and a mobile device is realized at a client, the specific file can be only opened on a specific device, and even though the file is leaked by an insider, a leaking device can be traced; moreover, the unique increment synchronization technology is realized, and the file can be synchronized by only synchronizing modified file blocks, so that the flow consumption in the file transmission process is reduced, the transmission efficiency is improved, the system usability is enhanced, and user experience is promoted.

The invention, which relates to the cloud storage field, provides a data cloud storage system that is composed of a plurality of servers and a plurality of data storage equipment. The method is characterized in that: an identity authentication mechanism and flexible operation authority setting are employed in cloud storage; each verification is carried out on data after each network transmission of the data; the network transmission is carried out after data compression; data in cloud are stored after encryption; backup is carried out on the data in cloud storage; the data that have been uploaded to the cloud storage can be updated only by uploading difference information; automatic load balancing is carried out to better utilize an idle processor and a network memory in cloud; both a user and an administrator can customize a strategy conveniently; and an administrator can monitor a serving state of the cloud storage. A cloud storage system that utilizes the technical scheme of the method enables security, integrity, availability of data storage and adaptive capability of the system to be improved; meanwhile, an operational efficiency and controllability of the system are also enhanced.

The disclosed embodiments provide a system that distributes data for a distributed filesystem across multiple cloud storage systems. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers cache and ensure data consistency for the stored data. Whenever each cloud controller receives new data from a client, it outputs an incremental metadata snapshot for the new data that is propagated to the other cloud controllers and an incremental data snapshot containing the new data that is sent to a cloud storage system. During operation, a backup cloud controller associated with the distributed filesystem is also configured to receive each (incremental) metadata snapshot, such that, upon determining the failure of a cloud controller, the backup cloud controller can immediately begin receiving data requests from clients associated with the failed cloud controller.

A cloud storage server-based approach allows detection of ransomware activity in cloud storage systems caused by ransomware infections on an endpoint device. A heuristic or rule-based technique is employed for recognizing sequences of file operations that may indicate ransomware activity. In some embodiments, users may be offered an opportunity to approve or disapprove of the possible ransomware activity. In others, cloud system file activity may be suspended or halted for the affected user upon recognition of possible ransomware actions. Enhanced recovery of files affected prior to recognition of the ransomware activity may be performed in some embodiments.

A cloud storage system includes an encryption server configured to encrypt a plurality of data by using encryption keys having a hierarchy, the hierarchy of encryption keys corresponding to a relationship among the plurality of encrypted data, and a cloud storage server configured to store the plurality of encrypted data.

The invention discloses a data storage method of a cloud storage system, which comprises the steps of: carrying out coding fragmentation on a file on the basis of a buffer zone erasure code technology to obtain data fragments and check fragments; processing the data fragments and the check fragments to obtain a check identification; storing the check identification in an index server; requesting storage resource information to the index server according to the quantity of the data fragments and the check fragments; sending the data fragments and the check fragments to a plurality of storage nodes according to the storage resource information; judging whether needing to carry out integrity check on the data fragments and the check fragments in the storage nodes; if needing to carry out integrity check on the data fragments and the check fragments in the storage nodes, sending the data integrity check information to the storage nodes, receiving an identification information set returned by the storage nodes, and judging whether data storage errors or data losses exist according to the identification information set, if yes, coding for recovering the data, and sending the recovered data to the corresponding storage nodes.

The invention relates to the field of computers and data storage, in particular to a data file security privacy storage and sharing method based on a block chain, which comprises a user layer, a blockchain layer and a data storage layer, and is characterized in that the user layer is used by a user to encrypt and upload data, encrypt and share data and receive data shared by other users; the blockchain layer is used for public storage of hash check codes of double encrypted ciphertext data and cloud storage data, and files are shared among users through transaction id; the data storage layeris used for storing and downloading ciphertext data; according to the invention, the availability and integrity of cloud storage data are effectively ensured; the user can conveniently verify the access permission, multi-user sharing of the data is achieved, the storage overhead and management overhead of the user on the secret key are reduced, the control force of the data owner on the data is improved, ciphertext sharing of the data is achieved, and the safety and privacy of the storage system are improved.