Various systems and methods are provided in which a replication process is initiated between a primary site and a recovery site, each having plurality of gateway appliances. Replication loads are evaluated for each given gateway appliance of the plurality of gateway appliances. If a determination is made that at least one gateway appliance of the plurality of gateway appliances is not overloaded, the plurality of gateway appliances are sorted based on replication loads respectively associated with each gateway appliance, and a determination is made as to whether a relative difference in replication loads between a gateway appliance having a highest replication load and a gateway appliance having a lowest replication load exceeds a difference threshold to determine whether the replication workloads between the gateway appliances should be rebalanced.

The present invention provides systems and methods for data storage. A hierarchical storage management architecture is presented to facilitate data management. The disclosed system provides methods for evaluating the state of stored data relative to enterprise needs by using weighted parameters that may be user defined. Also disclosed are systems and methods evaluating costing and risk management associated with stored data.

A method of storing encoded blocks of data in memory comprises generating headers for the encoded blocks of data. The headers are stored in memory according to a tiled layout based on tiles of plural adjacent blocks of data elements of the array of data elements. Respective sets of the encoded blocks of data are also stored in respective distinct regions of memory locations that have been allocated to those sets. The method provides an efficient way to access headers and corresponding encoded blocks of data in memory.

Provided are an image file distribution apparatus, an image file recovery apparatus, an image file distribution method, an image file recovery method, an image file distribution program, an image file recovery program, and a recording medium storing the program which can prevent a relatively large increase in the amount of data of an image file even when an (k, n) secret sharing scheme with high security is used. For example, distributed tag information is obtained from tag information of the image file by a (k, n)-threshold secret sharing scheme. For example, distributed image data is obtained from image data by a (k, L, n)-threshold ramp secret sharing scheme. For example, the distributed tag information and the distributed image data are combined to obtain combined data. Since the amount of data in the tag information is small, the use of the (k, n) secret sharing scheme does not cause a large increase in the amount of data. Since the (k, L, n)-threshold ramp secret sharing scheme does not cause a large increase in the amount of data, an increase in the total amount of data in the image data is relatively small.

According to an example, a dual-port non-volatile dual in-line memory module (NVDIMM) includes a first port to provide a central processing unit (CPU) with access to universal memory of the dual-port NVDIMM and a second port to provide an external NVDIMM manager circuit with access to the universal memory of the dual-port NVDIMM. Accordingly, a media controller of the dual-port NVDIMM may store data received from the CPU through the first port in the universal memory, control dual-port settings received from the CPU, and transmit the stored data to the NVDIMM manager circuit through the second port of the dual-port NVDIMM.

An apparatus is described. The apparatus can include non-volatile memory, an embedded processor, and a memory controller. The memory controller can access data from the byte addressable non-volatile memory using at least one of: a first addressing scheme or a second addressing scheme. The memory controller can provide the data to a host system over a first interface when the data is accessed using the first addressing scheme. The memory controller can provide the data to the embedded processor over a second interface when the data is accessed using the second addressing scheme.

Variables utilized in device firmware that provides various boot and runtime services are repaved in a fault-tolerant manner within a secure store in a durable, non-volatile device memory during an FOTA update process. A spare region in the secure store is utilized to temporarily hold a back-up of a primary region in which the firmware variables are written. Using a transaction-based fault-tolerant write (FTW) process, the variables in the primary region can be repaved with variables contained in a firmware update payload that is delivered from a remote service. In the event of a fault in the variable region repaving process, either the primary or spare region will remain valid so that firmware in a known good state can be utilized to enable the device to boot successfully and the variable region repaving in the FOTA update process may be restarted.

Multiple data paths may be available to a data management system for transferring data between a primary storage device and a secondary storage device. The data management system may be able to gain operational advantages by performing load balancing across the multiple data paths. The system may use application layer characteristics of the data for transferring from a primary storage to a backup storage during data backup operation, and correspondingly from a secondary or backup storage system to a primary storage system during restoration.

In a hierarchical storage memory (HSM), a file recalled by a specific application is migrated as soon as possible after completion of the application process. Specifically, the effective UID of a specific process is preregistered on an HSM client. After a recall operation is performed on a certain file from the user ID, when there is no access from the UID to the file for a given length of time, the file is migrated. This prevents files premigrated by access from any application other than the specific one from being handled in the same way, resolving a disadvantageous problem caused when these (premigrated) files are not desired to be migrated preferentially.

Provided are a computer program product, system, and method for selective write control in accordance with the present description. In one aspect, a write operation which is associated with a read operation, may be selectively discarded if write operations have been disabled and if the write operation is directed to update a designated write operation acceptance area such as metadata associated with the target data set, for example. As a result, the read operation may be permitted to proceed and will not fail because the associated write operation was discarded rather than attempting to commit the write operation to the designated write operation acceptance area, thereby avoiding an error condition for a storage unit such as a volume, in which write operations have been disabled. Accordingly, applications which seek to perform read operations may be permitted to access data stored on such a volume. Other aspects are described.