摘要:
Fractional, non-integer numbers of servers are calculated for respective tiers of a multi-tiered system using a server allocation algorithm. The fractional, non-integer numbers of servers are rounded up to integer numbers to compute allocated numbers of servers for respective tiers.
摘要:
To perform resource allocation in a system having plural tiers, one of plural resource allocation algorithms is selected in response to determining, based on one or more conditions, which of the plural resource allocation algorithms to select. The selected resource allocation algorithm is used to allocate resources for the plural tiers of the system.
摘要:
Plural sets of items corresponding to plural tiers of a multi-tiered system are defined, where the items represent amounts of resources to allocate to the tiers. Items from respective sets are selected based on a response time constraint and a target cost. Information is provided pertaining to allocation of amounts of resources to the respective tiers based on the selected items.
摘要:
A method performed by a processing system includes determining a location in a metadata tree of a patient for an electronic health record, generating a record key for the electronic health record based on the location and a provider key corresponding to a provider, the provider key generated from a patient key corresponding to the patient, encrypting the electronic health record using the record key to generate a encrypted record, and providing the encrypted record to an encrypted data store.
摘要:
An encryption key fragment is divided into a number of encryption key fragments. Requests to store different ones of the encryption key fragments are transmitted to different computer memory storage systems. An individual request to store an encryption key fragment includes one of the encryption key fragments and bears an access control hallmark for regulating access to the encryption key fragment.
摘要:
A wireless network metric region in a wireless network is determined using a node metric region and a performance metric. The node metric region, which includes a boundary of the node metric region, for each node is estimated and the performance metric for the node metric region for each node is measured. The boundary of the node metric region for each node is adjusted based on the measured performance metric and then the wireless network metric region for the wireless network is determined based on the adjusted boundaries of the node metric region for each node.
摘要:
A technique for selecting an erasure code from a plurality of erasure codes for use in a fault tolerant system comprises generating a preferred set of erasure codes based on characteristics of the codes' corresponding Tanner graphs. The fault tolerances of the preferred codes are compared based at least on the Tanner graphs. A more fault tolerant code is selected based on the comparison.
摘要:
Windowed backward key rotation. A user is provided information that allows determining a limited number of previous keys in a series of keys from a later key in the series. A key in the series is generated, based at least in part on the information provided to the user. The key in the series is provided to the user. The user determines at least one key in the limited number of previous keys in the series by applying the information to the key in the series.
摘要:
A method of providing protocol virtualization for a network file system. In particular, at least one virtual file server is established in the data path between the clients and the physical file systems. The virtual file server presents a virtualized name space and a virtualized ID space to the clients, the virtualized name and ID space representing the physical files on the physical file servers. To the clients, the virtual file server appears to be file server. To the physical file servers, the virtual file server appears to be a client. Junction directories permit the virtual file servers to combine physically separate directories to appear as one, and permit migration of objects between the physical file servers without perception by the clients.
摘要:
A method and apparatus is used to divide a storage volume into shards. The division is made using a directed graph having a vertex for each block in the storage volume and directed-edges between pairs of vertices representing a shard of blocks, associating a weight with each directed edge that represents the dissimilarity for the shard of blocks between the corresponding pair of vertices, selecting a maximum number of shards (K) for dividing the storage volume, identifying a minimum aggregate weight associated with a current vertex for a combination of no more than K shards, performing the identification of the minimum aggregate weight for vertices in the directed graph, and picking the smallest aggregated weight associated with the last vertex to determine a sharding that spans the storage volume and provides a minimal dissimilarity among no more than K shards of blocks.