Emc IP Holding Company LLC

Emc Corporation

Dell Software Inc.

Yadro International Ltd.

Ivan Andreyev

Andrey Pakhomov

Roman Vladimirovich Marchenko

Alexander Valeryevich Romanyukov

Agafonov Artyom

Alessandro Binotto

Anton Gostev

Assaf Natanzon

Ivan Tchoub

Vitaly Stanislavovitch Kozlovsky

Mikhail Malygin

Maxim S Trusov

Nikita Gutsalov

Alexey Sigaev

Artem Ikoev

Systems and methods of dictionary synchronization between applications over a network are provided. The dictionary synchronization can be performed with guaranteed packet ordering. With guaranteed packet ordering, operations such as data de-duplication can be performed over the wire or network.

Dictionary synchronization over a transport with guaranteed ordering

Methods and apparatus are provided for transmitting data over a network through a tunnel. In one embodiment, a method comprises obtaining data for transfer over a network from a sender to a receiver. At an operating system level, at least one packet is intercepted from the data that satisfies one or more configurable criteria. A tunnel is established from the sender to the receiver, wherein the tunnel selectively performs one or more of encryption, compression, and data deduplication of the intercepted packet. The intercepted packet is transmitted through the tunnel from the sender to the receiver. A handshake protocol optionally determines the presence of agents at the sender and receiver. The handshake protocol fails if agents are not present at both the sender and receiver, and the transfer is then carried out over a standard communication channel.

Optimization of network data transfers over a wide area network

A data storage system, including a host server having storage processors, a PCIe fabric, and a GBE fabric, and two or more data storage modules having a bank of DRAM, long-term storage drives, a host interface, including a PCIe interface and a GBE interface, an application specific integrated circuit connected to the host interface, the storage drives, and the DRAM, and a battery, the battery providing power to the DRAM and SSDs in an event of failure of a main power supply. Data streams transmitted from the host server via a PCIe connection of the PCIe fabric are received at the host interface and placed directly in DRAM as a write-back cache operation. In addition, the battery provides the DRAM with non-volatile memory capabilities and the storage modules with portability. A method for arbitration of write requests between the storage processors of the data storage system is also disclosed.

Arbitration control system and method for storage systems

Connection-oriented communication devices are provided with round trip time estimation. An exemplary method is provided for communicating between first and second communication devices over a wide area communication network. The first communication device sends a Round Trip Time (RTT) packet comprising a timestamp to the second communication device. The second communication device receives the RTT packet, copies the timestamp into a reply RTT packet and sends the reply RTT packet to the first communication device. The first communication device receives the reply RTT packet and determines a current Round Trip Time based on a difference between the timestamp and a current time. The current Round Trip Time is optionally processed by a congestion avoidance and control algorithm. An application can control a size of a queue based on conditions of the wide area communication network.

Connection-oriented communication devices with round trip time estimation

Embodiments are described for systems and methods that optimize large-scale data transfers over a wide area network by providing a data transmission protocol stack comprising a TCP layer that exchanges data processed by a host, and an IP layer that transports datagrams encapsulating the data to routers in the WAN, and a UDP-based transmission layer within the data transmission protocol stack that interfaces with the TCP layer and transmits data and control packets between the host and receivers of the WAN using a unicast duplex protocol. The stack has a WAN optimization components layer that interacts with the UDP-based transmission layer and provides transport protocol optimization through the UDP-based transmission layer and certain data de-duplication, compression, link aggregation, and application awareness functions.

Big data transfer optimization

An improved technique involves avoiding congestion in a network by monitoring round trip times of data units sent from a node of the network. Along these lines, a controller at a node of the network sends data units at some transmission rate to a target node with instructions to send a response back to the home node. Upon receiving the response, the controller measures the round-trip time as the difference in time from sending of the message to receipt of the response. Based on the round-trip time, the controller sets a new transmission rate at which to send units of data.

Congestion avoidance and control for UDP-based protocols

A system for detecting creation of a program instance includes an interceptor routine that obtains a parameter corresponding to a characteristic of a program instance and an interceptor module that can be injected into a native operating system process. In certain examples, the interceptor module can replace an address of a selected routine in an address table with an address to the interceptor routine, such that the native operating system process can call the interceptor routine in place of the selected routine. Additionally, the system can include a comparison module that compares the parameter to a set of identified programs to determine whether the program instance corresponds to at least one of the identified programs. The system can also include a security module that can modify execution of the program instance based at least in part on a determination that the program instance corresponds to at least one identified program.

System and method for intercepting process creation events

A method, system, and program product for data deduplication in a replication environment, the replication environment having a production site, a splitter, and a replication site, wherein the replication site has a journal, comprising determining a digest for each chunk of data of a set of data chunks, determining for each chunk whether the digest is in an index on the production site, determining for which offsets are to be evicted from the cache on the replication site, replacing the chunks in set of chunks that are in the index with an offset, and transmitting the set of chunks, offsets and an eviction list to the replication site.

Growing community of inventors

St. Petersburg, Russia

Ivan Andreyev