Abstract: The present invention provides a server including a SSD, a first node and a second node, wherein the first node comprises a first processor and a first memory, and the second node comprises a second processor and a second memory. When the first processor receives data from another device via network, the first processor stores the data in the first memory, and the first processor further sends the data to the second node; when the second processor receives the data from the first node, the second processor stores the data in the second memory, and the second processor further sends a notification to the first node to inform that the data is successfully stored in the second memory; and after and only after the first processor receives the notification from the second node, the first processor starts to write the data into the SSD.

Abstract: An apparatus comprises at least one processing device configured to generate, for a storage system that is part of an active tier of a storage environment, at least one storage capacity forecast comprising probability values for storage capacity of the storage system over a designated time period. The processing device is also configured to determine whether any of the probability values exceed at least one designated storage capacity threshold and, responsive to determining that a given one of the probability values exceeds the at least one designated storage capacity threshold, to select remedial actions for freeing up space on the active tier of the storage environment. The processing device is further configured to initiate the selected remedial actions for freeing up space on the active tier of the storage environment to prevent the storage system from reaching a designated storage capacity error condition.

Abstract: In one embodiment, a method for managing data includes collecting workload information for a data storage device in a data storage system over a period of time. A peak workload of the data storage device for the period of time is determined. A maximum workload threshold for the data storage device in the data storage system over the period of time is also determined. Movement of additional workload to the device in the data storage system is prevented during a subsequent period of time when the data storage device is predicted to be at about the peak workload for the data storage device in response to a determination that adding the additional workload would cause the workload of the device to exceed the maximum workload threshold.

Abstract: A storage system and method for using host-assisted variable zone speed grade modes to minimize overprovisioning are provided. In one embodiment, a controller of the storage system is configured to receive a request from a host for creation of a zone of memory; in response to the request, create the zone to avoid overprovisioning the zone; determine speed grades of a plurality of usage modes of the zone; inform the host of the speed grades of the plurality of usage modes of the zone; and receive, from the host, a command to write data in the zone pursuant to one of the plurality of usage modes. Other embodiments are provided.

Abstract: Compressed data is oftentimes beneficial for reducing the computing resources required, for example, to transmit and store data. The compression of data is particularly useful when dealing with sparse data (data that includes numerous zeros or near-zero values) and only non-zero values above a certain threshold have significance. When dealing with compressed data, oftentimes the data needs to be decompressed for processing (e.g., by deep learning networks or other applications configured to operate on sparse, or other uncompressed data). Instructions are disclosed for supporting the decompression of compressed data by a processing unit such as a CPU and GPU.

Abstract: The present technology relates to an electronic device. A storage device according to the present technology includes a memory device including a plurality of logical storage areas, and a memory controller. The memory controller controls the memory device to perform a memory operation on an original storage area of the plurality of logical storage areas according to a request of a host, and to perform a mirroring operation of copying the memory operation which was performed on the original storage area in a backup storage area of the plurality of logical storage areas based on whether the memory device is in an idle state.

Abstract: Cloning a tracking copy of replica data, including receiving, at a target data repository from a source data repository, metadata describing one or more updates to a dataset stored within the source data repository; generating, based on the metadata describing the one or more updates to the dataset, a tracking copy of replica data on the target data repository; and generating, based on the tracking copy, a cloned image of the dataset that is modifiable without modifying the tracking copy of the replica data.

Abstract: At least one processing device is configured to select a virtual block corresponding to a physical block in a storage system, wherein the virtual block comprises a plurality of pages with one or more pages of the virtual block respectively pointing to one or more data portions in the physical block. The at least one processing device is also configured to identify a target physical block and one or more virtual blocks corresponding to the target physical block. The at least one processing device is further configured to move at least one data portion from the physical block to the target physical block. Still further, the at least one processing device is configured to redirect the at least one page of the virtual block corresponding to the at least one moved data portion to one of the one or more virtual blocks corresponding to the target physical block.

Abstract: Stack compression refers to compression of data in one or more dimensions. For uncompressed data blocks that are very sparse, i.e., data blocks that contain many zeros, stack compression can be effective. In stack compression, uncompressed data block is compressed into compressed data block by removing one or more zero words from the uncompressed data block. A map metadata that maps the zero words of the uncompressed data block is generated during compression. With the use of the map metadata, the compressed data block can be decompressed to restore the uncompressed data block.

Abstract: A system includes a data storage device and a host computing device. The data storage device includes a host interface; integrated circuit memory cells; and a processing device. The processing device is configured to execute firmware to perform operations requested by commands received via the host interface and maintenance operations identified by the processing device independent of commands received via the host interface. The host computing device is coupled to the host interface to provide commands with addresses to access the integrated circuit memory cells according to the address. In response to a request, the host computing device is configured to reduce, to below a threshold, a rate of transmitting to the host interface commands to access integrated circuit memory cells; and power up the data storage device to cause the data storage device to perform the maintenance operations.

Abstract: System, method, and various embodiments for providing a metadata converter and memory management system are described herein. An embodiment operates by determining that first metadata corresponding to a table of a database comprising load preferences for a column level for a plurality of columns of the table, wherein the load preferences include either column load or page load. It is determined that the database is enabled with both load preferences for a table level and load preferences partition level, in addition to load preferences for the column level. Values for the load preferences are automatically assigned for both the table level and the partition level in second metadata, and wherein the second metadata preserves the load preferences for the column level of the first metadata. A query against the table based on load preferences from the second metadata.

Abstract: Storage locations in a first tier of a multi-tier storage system are allocated to a first set of data structures (e.g., inodes) in a first file set. A file that is stored in the first tier is associated with a first data structure of the first set. In response to determining that data in the file should be moved to a second tier of the multi-tier storage system, the file is associated with a second data structure in a second file set. The second data structure is allocated a storage location in the second tier. Consequently, two data structures are associated with the file. The data is copied from the first tier to the storage location in the second tier, and can be subsequently accessed using the second data structure.

Abstract: An aspect of the invention includes a method for receiving a request to reclaim a portion of a memory assigned to a virtual machine (VM). In response to receiving the request, an increment of the plurality of increments to vacate is selected. The selecting is based at least in part on the failure counts corresponding to each of the plurality of increments. An attempt is made to vacate all contents of the selected increment. Based at least in part on determining that all contents of the selected increment were not vacated, a failure count corresponding to the selected increment is incremented. Based at least in part on determining that all contents of the selected increment were vacated, an assignment of the selected increment to the VM is removed.

Abstract: Systems and methods for exporting logical object metadata. In one example, the system includes an electronic processor configured to receive a first input from a user. The first input includes a logical object location and at least one metadata export option. The electronic processor is also configured to create an export job based upon the first input. The electronic processor is also configured to store the export job in a job queue, determine when a computing resource is available to execute the export job, and execute the export job when the computing resource is available. The electronic processor is also configured to store a job manifest in a memory location. In one example, the job manifest includes metadata for each logical object located in the logical object location.

Abstract: The disclosure herein describes placing a delta component of a base component in a target fault domain. A delta component associated with a base component is generated. The generation includes selecting a first fault domain as a target fault domain for the delta component based on the first fault domain including a witness component associated with the distributed data object of the base component. Otherwise, the generation includes selecting a second fault domain as the target fault domain based on the second fault domain including at least one data component that includes a different address space than the base component. Otherwise, the generation includes selecting a third fault domain as the target fault domain based on the third fault domain being unused. Then, the delta component is placed on the target fault domain, whereby data durability of the distributed data object is enhanced, and available fault domains are preserved.

Abstract: A system identifies and causes transmission of differential data generated during device migration. An administrative server accesses a first backup snapshot of a retiring client device. The first backup snapshot includes a set of files stored in the retiring client device during a first checkpoint. The administrative server transmits the set of files in the first backup snapshot to a replacement client device. A cloud server stores the first backup snapshot and a second backup snapshot of the retiring client device. The second backup snapshot is created during a second checkpoint occurring after transmission of the set of files. The cloud server receives an indication that a user has logged on to the replacement client device and causes a transmission of differential data to the replacement client device. The differential data includes at least one file in the second backup snapshot that is not included in the first backup snapshot.

Abstract: Techniques for the increased efficiency of storing data objects storage in the object storage of a software designed data center (SDDC) are provided. The techniques include the efficient storage of data, while enabling snapshots of each updating of the data. The snapshots of the data may be efficiently recovered via the techniques. Difference-level mappings for each snapshot are encoded in compact self-balancing data trees included in the object's metadata. The metadata mappings include mappings between various address spaces employed by the SDDC, as well as the address spaces employed by data stores that store the data on physical medium. Because the metadata is efficiently structured, the metadata for an object may be cached for quick lookups during data access and/or snapshot recovery. The techniques also provide low-latency recovery and/or system rollback in the event of any failure in the SDDC.

Abstract: Fast-aiding radio access network intelligent controllers (RICs) can assist other RICs that are experiencing performance issues. The system can take into account the availability of other RICs that can aid the RIC needing assistance. Therefore, multiple RICs cooperatively working together can generate synergies, and allow differentiated RICs to operate in both predefined and/or dynamically create RIC groups. Once a RIC that needs assistance is identified, other RICs can offload functionalities that are less important than the functionality of the RIC that is experiencing the performance issues. After the assisting RIC has offloaded its functionalities, it can then devote resources to the RIC that needs the assistance.

Abstract: A system includes a first memory component having a particular access size associated with performance of memory operations, a second memory component to store a logical to physical data structure whose entries map management segments to respective physical locations in the memory component, wherein each management segment corresponds to an aggregated plurality of logical access units having the particular access size, and a processing device, operably coupled to the memory component. The processing device can perform memory management operations on a per management segment basis by: for each respective management segment, tracking access requests to constituent access units corresponding to the respective management segment, and determining whether to perform a particular memory management operation on the respective management segment based on the tracking.

Abstract: Memory reclamation is tailored to avoid certain synchronization instructions, speeding concurrent garbage collection while preserving data integrity and availability. Garbage collection reclaims objects no longer in use, or other unused areas of memory. Pointers are partitioned into address portions holding address values and non-address portions having a special bit. Marking code writes only the non-address portions, setting the special bit as a mark reference, relocation candidate, etc. Mutator threads may concurrently mutate the entire pointer to update the address, but mutation does not cause incorrect reclamations or failure to do other operations such as relocation. Meanwhile, execution speed is increased by avoiding CAS (compare-and-swap instructions or compare-and-set) synchronization instructions. Non-CAS yet nonetheless atomic writes are used instead. Mutators run in user or kernel address spaces.

Abstract: A security incident is detected at a first location; a risk of the security incident is evaluated. A first security scores is generated for the first location. A set of security scores are generated for a set of alternative locations; the set of security scores excludes the first security score. A second security score within the set of security scores is determined to be the best security score among a plurality of security scores; the plurality of security scores comprises the set of security scores and the first security score. A workload associated with the first location is migrated to a second location, where the second location is associated with the second security score.

Abstract: Some embodiments provide a method for migrating a set of data objects from a first database of a first database type to a second database of a second database type. The method receives a selection of the second database type and receives a selection of a user interface control for initiating the database migration from the first database of the first database type to the second database of the selected second database type. The method provisions the second database and transfers the set of data objects from the first database to the second database.

Abstract: A method for managing data in a distributed data processing system including a number of processing nodes includes storing data units in data stores that are associated with a number of different levels of durability. The method includes maintaining indicators including a first indicator associated with a first durability level and a second indicator associated with a second durability level. The first indicator is maintained to reflect a time interval at which all sets of data units associated with the time interval are stored at the first durability level. The second indicator is maintained to reflect a timer interval at which all sets of data units associated with the time interval are stored at the second durability level. The first and second indicators are used to manage processing of the data units in the distributed data processing system.

Abstract: Transferring data for a virtual machine from a source storage device to a destination storage device includes determining if either the source storage device or the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The source storage device pushes data to the destination storage device if the source storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The destination storage device pulls data from the source storage device if the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. A host computing device transfers data from the source storage device to the destination storage device in response to neither storage device being capable of unilaterally transferring data to a storage device having only input and output capabilities.

Abstract: Techniques are disclosed for managing a high performance, fault-tolerant, strongly consistent, distributed key-value store system. The key-value store may store information, such as metadata for a distributed file system. Fault-tolerance means that the distributed key-value store continues to provide access to values in the key-value store in spite of a certain number of node failures. To provide this capability, the key-value store may store copies of (key, value) pair on N+1 nodes in order to provide fault tolerance for the failure of up to N nodes. In addition, metadata describing which nodes store a given value is stored on 2N+1 nodes and the distributed key-value store is sized such that there are 3N+1 nodes in a cluster. Doing so allows the key, value store to tolerate a failure of N nodes, while still maintaining a consistent and available key-value store.

Abstract: A table organized into a set of batch units is accessed. A set of N-grams are generated for a data value in the source table. The set of N-grams include a first N-gram of a first length and a second N-gram of a second length where the first N-gram corresponds to a prefix of the second N-gram. A set of fingerprints are generated for the data value based on the set of N-grams. The set of fingerprints include a first fingerprint generated based on the first N-gram and a second fingerprint generated based on the second N-gram and the first fingerprint. A pruning index that indexes distinct values in each column of the source table is generated based on the set of fingerprints and stored in a database with an association with the source table.

Abstract: Techniques manage a cache. Such techniques involve creating a primary cache by a cache management module in a storage system. Such techniques further involve: in response to the primary cache being created, sending a first request to a hardware management module to obtain first information about a first virtual disk. Such techniques further involve: in response to receiving the first information from the hardware management module, creating a secondary cache using the first virtual disk. Such techniques further involve: in response to an available capacity of the primary cache being below a predetermined threshold, flushing at least one cache page in the primary cache to the secondary cache. In certain techniques, it is possible to use spare extents in the disk array to create the secondary cache to increase a total capacity of the cache in the system, thereby improving the access performance of the system.

Abstract: Embodiments of the invention provide systems and methods for managing processing, memory, storage, network, and cloud computing to significantly improve the efficiency and performance of processing nodes. More specifically, embodiments of the present invention are directed to a hardware-based processing node of an object memory fabric.

Abstract: A computer-implemented method, according to one embodiment, is for integrating magnetic tape storage with a distributed disk file system. The computer-implemented method includes: registering for a subset of data operations that are recorded at a central location, where the central location is coupled to a plurality of distributed accessor nodes. A subset of available resources in one or more magnetic tape libraries that are coupled to the plurality of distributed accessor nodes are registered for and further managed. Moreover, a performance of the subset of data operations using the registered subset of available resources is scheduled. Supplemental data operations which correspond to the subset of data operations are also automatically received from the central location.

Abstract: Power consumption for refresh of memory devices on a memory module is reduced by each memory device on the memory module to one of a plurality of sub channels on the memory module. Each sub channel has a thermal sensor that monitors the temperature of the DRAM chips in the region. The refresh rate is increased only for the memory devices in the sub channel in which the memory devices operate above a predefined high temperature. This results in a reduction in power required by the memory module for refresh and an increase in the maximum bandwidth of the memory module.

Abstract: An information handling system is configured, during a pre-extensible firmware interface initialization phase of the information handling system, to learn capabilities of components of the information handling system, create a hand-off block for storage of a virtual graphical browser firmware volume payload, and store learned capabilities of the components of the information handling system in the hand-off block. During a driver execution environment phase, the information handling system may retrieve the learned capabilities of the components of the information handling system stored in the hand-off block, publish learned capabilities retrieved from the hand-off block, retrieve the virtual graphics browser firmware volume payload stored in the hand-off block, and dispatch a virtual graphics browser learning driver and a virtual graphics browser interpreter driver based on retrieved virtual graphics browser firmware volume payload.

Abstract: The present disclosure includes apparatuses, methods, and systems for using memory as a block in a block chain. An embodiment includes a memory, and circuitry configured to generate a block in a block chain for validating data stored in the memory, wherein the block includes a cryptographic hash of a previous block in the block chain and a cryptographic hash of the data stored in the memory, and the block has a digital signature associated therewith that indicates the block is included in the block chain.

Abstract: A neuron circuit is capable of producing a weighted sum of digitized input signals and applying an activation function to the weighted sum so as to produce a digitized activation signal as output. The circuit includes at least: one multiplier multiplying each input signal (x1 to xn) with a weight value (w1j to wnj), one accumulator accumulating the results of the multiplier so as to produce the weighted sum, and one activation unit executing the activation function. The activation unit comprises at least one shift unit and at least one saturation unit capable of approximating a non-linear activation function. The result of the approximated activation function is obtained by one or more arithmetic shifts applied to the weighted sum.

Abstract: A memory system includes a plurality of memory blocks each including a plurality of pages, each page including a plurality of offsets, and a controller. The controller includes a memory and performs a garbage collection operation on a victim block using the memory. The controller selects the victim block from among the plurality of memory blocks, calculates an invalid offset ratio by checking whether an invalid offset exists among a plurality of offsets in a valid page included in the victim block. When the invalid offset ratio is included in a predetermined threshold range, the controller calculates a sequential ratio of the valid page, predicts a logical address of the invalid offset depending on the sequential ratio, and stores, in the memory, valid data stored in a plurality of valid offsets in the valid page and valid data stored in a memory region corresponding to the predicted logical address.

Abstract: A method for mitigating cold starts in recommendations includes receiving a request that identifies a requested page and identifying a content vector of the requested page. The content vector is generated based on providing text of the requested page to a neural network text encoder. The method further includes selecting, based on a rank engine and the content vector, a link to a cold start page that does not satisfy a threshold level of interaction data. The rank engine ranks the selected link above a second link to a warm page that does satisfy the threshold level of the interaction data. The method further includes presenting the requested page with the selected link.

Abstract: Disclosed is a storage system having a plurality of storage nodes, each of the storage nodes including: a non-volatile storage apparatus that stores control information regarding a volume; a capacity controller that performs control associated with writing information to and reading information from the storage apparatus; and a migration controller migrates the volume, in which when the volume is migrated between the storage nodes, the capacity controller updates the control information in response to the migration of the volume performed by the migration controller.

Abstract: Data processing apparatuses, methods of data processing, instructions, and simulator computer programs for providing a corresponding instruction execution environment are disclosed. Decode circuitry is responsive to an instance of a predetermined instruction type to cause issue circuitry to issue at least one subsequent instruction for execution to one of first and second instruction execution circuitry which support decoupled access-execute instruction execution. The predetermined instruction type is thus a steering instruction for at least one subsequent instruction and the programmer is provided with a mechanism for determining which program instructions are treated as access instructions and which are treated as execute instructions.

Abstract: Embodiments are provided herein for efficient component communication and resource optimization in a disaggregated computing system. A general purpose link is provided between a plurality of devices in the disaggregated computing system. The general purpose link is used to connect the plurality of devices which respectively comprise different types of devices. A first data object is stored within one of the plurality of devices according to a past use or an expected use of the data object by at least a respective one of a set of processors within the disaggregated computing system, and the general purpose link is dynamically rewired according to a location of the first data object and a location of the at least one of the respective set of processors.

Abstract: A system and method for adding a migration file group to a hierarchical storage management (HSM) system for data co-location are presented. A file group attribute may be automatically added to one or more files in the HSM system to enable one or more applications to co-locate data. The one or more files, having a similar file group attribute, may be migrated from one or more storage devices in a first tier in the HSM system to a tape storage device in an nth tier of the HSM system to enable recalling of the one or more files in the HSM system.

Abstract: Method and apparatus for managing memory includes collocating electronic persistent memory along with a primary memory on a memory module. The electronic persistent memory and the primary memory may communicate via a module local bus comprising a plurality of memory channels. A data migration protocol may be used over a memory channel of the plurality of memory channels to copy data from the electronic persistent memory to the primary memory, and the data may be accessed from the primary memory. The combination of electronic persistent memory and primary memory (e.g. DRAM) in a single memory module with module local bus having a device controller running firmware is one implementation of storage class memory (SCM).

Abstract: In one aspect, a computer-implemented method useful for bulk data migration with a dedupe file system includes the step of providing a data-transfer appliance, wherein the data-transfer appliance comprises a specified number of hard drive data disks configured in a specified number of RAID (redundant array of independent disks) volumes in each RAID group. The computer-implemented method includes the step of creating a single dedupe mountpoint on the data-transfer appliance for a dedupe process, wherein the dedupe process communicates only with the single dedupe mountpoint. The computer-implemented method includes the step of creating a single namespace of all RAID volumes under the single dedupe mountpoint. The computer-implemented method includes the step of creating a scalable namespace for deduplication without a volume manager.

Abstract: Described are techniques for dynamic rebalancing in storage systems. The techniques including a method comprising calculating an estimated time to storage fullness for respective storage pools in a space balance group, the estimated time to storage fullness based on an allocation speed of the respective storage pools. The method further comprises classifying a first storage pool having a first estimated time to storage fullness below a migration time threshold as a first migration source storage pool. The method further comprises classifying a second storage pool having a second estimated time to storage fullness above the migration time threshold as a first migration target storage pool. The method further comprises rebalancing free space in the space balance group by migrating storage volumes from the first migration source storage pool to the first migration target storage pool.

Abstract: Examples include determination of non-TDP zones in a storage area network. Some examples use a member zone list request to request identification of each zone of which a target port of a target device is a member, identify each TDP zone among identified zones of which a target port is a member and determine whether the identified zones include one or more non-TDP zones.

Abstract: Data from a database object are processed. Transaction information for a set of data of the database object is stored separate from the set of data in an allocated storage space, where the transaction information indicates visibility of the set of data to other transactions. A map structure is generated indicating storage of the set of data and the allocated storage space of the transaction information. The transaction information is altered in response to a transaction to the set of data to alter visibility of the set of data. Altering the transaction information is accomplished by providing updated transaction information within a new storage space in accordance with the transaction to the set of data and generating a descriptor for the transaction indicating an existing location of the set of data and the new storage space.

Abstract: Provided are a computer program product, system, and method for managing data in a storage. Each index entry in and index identifies a log address in the log of one of the records. Each record in the log includes a key and value, and the log addresses map to physical addresses in the storage. A plurality of processed log addresses in the log are processed by determining whether the index indicates that the processed log address includes a current version of the record in the log; adding the record at the processed log address to a selected log address in the log in response to determining that the index indicates that the processed log address comprises the current version of the record; and deleting a record at the physical address in the storage to which the processed log address maps.

Abstract: A storage system and data control method capable of extending the service lifes of storage devices of the same type and with different properties and reducing operation management cost are proposed. The storage system includes: a first storage device; a second storage device with a smaller upper limit number of writes and a larger storage capacity per unit area than those of the first storage device; and a processor that allocates storage areas from the first storage device and the second storage device to a virtual volume to be provided to a host, wherein the processor relocates data which is stored in a storage area with higher write frequency from the host than a predetermined write threshold, from among the storage areas allocated from the second storage device to the virtual volume, from the storage area of the second storage device to a storage area of the first storage device.

Abstract: Techniques release and/or allocate resources. Such techniques involve obtaining information related to low-usage-rate-resources, the information indicating resources of a set of resources in a storage system having usage rates lower than a threshold. Such techniques further involve receiving a request for resource release, the request comprising the number of resources to be released. Such techniques further involve determining, based on the number of resources to be released, the number of low-usage-rate-resources to be released. Via such techniques, not only the time and computing overheads for checking each resource that are needed in resource release may be reduced, but also the amount of data needed to be moved in resource release may be reduced.

Abstract: An information handling system may include a processor and a program of instructions embodied in non-transitory computer-readable media and configured to, when read and executed by the processor: in response to a request to write a variable to a solid state device, store the variable to a memory location of the solid state device, the variable including variable data and a variable status indicative of a validity of the variable data, the variable status having a plurality of bits wherein each of the plurality of bits are set to an initial value and in response to a request to modify the variable, modify the variable status by changing one of the plurality of bits from the initial value to a logical complement of the initial value to change the validity of the variable data. The validity of the variable data may be based on whether an even number or odd number of the plurality of bits are equal to the complement of the initial value.

Abstract: An approach is disclosed that relocates a named data element. A request to move a name corresponding to the named data element is received from a first storage area in a Coordination Namespace to a second storage area in the Coordination Namespace. The first storage area has a first level of persistence, and the second storage area has a second level of persistence. The named data element exists in a Coordination Namespace that is allocated in a memory distributed amongst a plurality of nodes that include the local node and one or more remote nodes. The approach then creates a copy of the named data element in the second storage area.

Abstract: Migrating content between enterprise content management systems is described. A source object identifier is identified for metadata tables for content for a source enterprise content management system, based on a migration job definition. The metadata tables are retrieved from the source enterprise content management system, based on the source object identifier. A target object identifier is identified for a target enterprise content management system, based on the metadata tables and the migration job definition. An object identifier map is created that maps the source object identifier to the target object identifier. The metadata tables are stored to the target enterprise content management system, based on the object identifier map. The content for the source enterprise content management system is retrieved. The content is stored as content for the target enterprise content management system.