Patent application number | Description | Published |
20120166588 | SHARED-BANDWIDTH MULTIPLE TARGET REMOTE COPY - A computer management apparatus one embodiment includes a split component configured to split data into a plurality of data elements; a send component configured to send each one of the plurality of data elements to a different location selected from a plurality of locations in response to the split component splitting the data, wherein each data element is different; and a message component configured to send a message to each of the locations. A computer management apparatus in another embodiment includes a receive component configured to receive a first data element; an analyze component configured to recieve a message, wherein the message comprises an address of each of the further locations; and a send component configured to send the first data element to each of the further locations of the plurality of further locations in response to the analyze component determining the address of each of the further locations. | 06-28-2012 |
20130144966 | COORDINATING WRITE SEQUENCES IN A DATA STORAGE SYSTEM - According to one aspect of the present disclosure, a method and technique for coordinating write sequences in a data storage system is disclosed. The method includes: responsive to a primary device receiving a request to write to primary storage, receiving from the primary device a request for a sequence number; generating a current sequence number for the write; generating a first identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number; generating a second identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number and a previous sequence number; transmitting the current sequence number and the second identifier to the primary device; and transmitting the current sequence number and the first identifier to the secondary devices writing to secondary storage based on the previous sequence number. | 06-06-2013 |
20130144977 | SHARED-BANDWIDTH MULTIPLE TARGET REMOTE COPY - In one embodiment, a method for sharing bandwidth in a data processing system having a plurality of locations includes splitting data into a plurality of data elements, sending each one of the plurality of data elements to a different location selected from the plurality of locations, wherein each data element is different, and sending a message to each of the locations. In another embodiment, a method for sharing bandwidth in a data processing system having a plurality of locations, wherein the plurality of locations comprises a first location and plurality of further locations, includes receiving a first data element, receiving a message, wherein the message comprises an address of each of the further locations, and sending the first data element to each of the further locations of the plurality of further locations, responsive to determining the address of each of the further locations. | 06-06-2013 |
20130145117 | COORDINATING WRITE SEQUENCES IN A DATA STORAGE SYSTEM - According to one aspect of the present disclosure, a system and technique for coordinating write sequences in a data storage system includes a processor configured to receive from a primary device, responsive to the primary device receiving a request to write to primary storage, a request for a sequence number. The system also includes a sequence generator configured to: generate a current sequence number for the write; generate a first identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number; generate a second identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number and a previous sequence number; transmit the current sequence number and the second identifier to the primary device; and transmit the current sequence number and the first identifier to the secondary devices writing to secondary storage based on the previous sequence number. | 06-06-2013 |
20130173537 | MANAGING REMOTE DATA REPLICATION - Various systems, processes, and products may be used to manage remote data replication. In particular implementations, a system and process for managing remote data replication may include the ability to store versions of a disk at a first site, a second site, and a third site. The version of the disk at the first site may store input/output for a host system, the version at the second site may be a synchronous replication of the version at the first site, and the version at the third site may be an asynchronous replication of the version at the first site. The system and process may also include the ability to synchronize the version at the first site with the version at the third site if the second site is unavailable and synchronize the version at the second site with the version at the third site if the first site is unavailable. | 07-04-2013 |
20130173538 | MANAGING REMOTE DATA REPLICATION - Various systems, processes, and products may be used to manage remote data replication. In particular implementations, a system and process for managing remote data replication may include the ability to store versions of a disk at a first site, a second site, and a third site. The version of the disk at the first site may store input/output for a host system, the version at the second site may be a synchronous replication of the version at the first site, and the version at the third site may be an asynchronous replication of the version at the first site. The system and process may also include the ability to synchronize the version at the first site with the version at the third site if the second site is unavailable and synchronize the version at the second site with the version at the third site if the first site is unavailable. | 07-04-2013 |
20130198467 | MANAGING REMOTE DATA REPLICATION - Various systems, processes, and products may be used to manage remote replication of data. In particular implementations, a system, process, and product for managing remote replication of data may include the ability to receive writes from an external system, request an ordered index for the writes, and send the writes to at least one storage system. The system, process, and product may also include the ability to receive writes from the at least one storage system, receive ordered indexes for the writes from the external system and the at least one storage system, and store the writes based on the indexes. | 08-01-2013 |
20130198477 | MANAGING REMOTE DATA REPLICATION - Various systems, processes, and products may be used to manage remote replication of data. In particular implementations, a system, process, and product for managing remote replication of data may include the ability to receive writes from an external system, request an ordered index for the writes, and send the writes to at least one storage system. The system, process, and product may also include the ability to receive writes from the at least one storage system, receive ordered indexes for the writes from the external system and the at least one storage system, and store the writes based on the indexes. | 08-01-2013 |
20130346711 | SOURCE CLEANING CASCADED VOLUMES - Various systems, processes, and products may be used to source clean cascaded volumes. In particular implementations, a system, process, and product may include the ability to store a number of cascaded backup volumes and prepare received writes for storage. The system, process, and product may also include the ability to examine a metadata set associated with a volume region for a write to determine whether another volume depends on the region and write the new data to the region if another volume is not dependent. The system, process, and product may further include the ability to determine whether a write is for a volume region that is a canonical source and, if so, decrement a reference count in a metadata set associated with the region and establish the volume of the region as a canonical source for a metadata set associated with a new metadata set location identifier. | 12-26-2013 |
20130346713 | SOURCE CLEANING CASCADED VOLUMES - Various systems, processes, and products may be used to source clean cascaded volumes. In particular implementations, a system, process, and product may include the ability to store a number of cascaded backup volumes and prepare received writes for storage. The system, process, and product may also include the ability to examine a metadata set associated with a volume region for a write to determine whether another volume depends on the region and write the new data to the region if another volume is not dependent. The system, process, and product may further include the ability to determine whether a write is for a volume region that is a canonical source and, if so, decrement a reference count in a metadata set associated with the region and establish the volume of the region as a canonical source for a metadata set associated with a new metadata set location identifier. | 12-26-2013 |