Zerto Ltd.

Emc Israel Development Center, Ltd.

Emc Corporation

Ziv Kedem

Chen Yehezkel Burshan

Yair Kuszpet

Gil Levonai

Yair Heller

Michael Lewin

Assaf Natanzon

Shlomo Ahal

Evgeny Drukh

Gil Barash

Omri Shefi

Tomer Ben Or

Shay Mannor

Avi Shoshan

Efrat Angel

Oded Weber

A hypervisor virtual server system, including a plurality of virtual servers, a plurality of virtual disks that are read from and written to by the plurality of virtual servers, a physical disk, an I/O backend coupled with the physical disk and in communication with the plurality of virtual disks, which reads from and writes to the physical disk, a tapping driver in communication with the plurality of virtual servers, which intercepts I/O requests made by any one of said plurality of virtual servers to any one of said plurality of virtual disks, and a virtual data services appliance, in communication with the tapping driver, which receives the intercepted I/O write requests from the tapping driver, and that provides data services based thereon.

Methods and apparatus for providing hypervisor level data services for server virtualization

A cross-host multi-hypervisor system, including a plurality of host sites, each site including at least one hypervisor, each of which includes at least one virtual server, at least one virtual disk that is read from and written to by the at least one virtual server, a tapping driver in communication with the at least one virtual server, which intercepts write requests made by any one of the at least one virtual server to any one of the at least one virtual disk, and a virtual data services appliance, in communication with the tapping driver, which receives the intercepted write requests from the tapping driver, and which provides data services based thereon, and a data services manager for coordinating the virtual data services appliances at the site, and a network for communicatively coupling the plurality of sites, wherein the data services managers coordinate data transfer across the plurality of sites via the network.

A system for disaster recovery including a controller (i) for controlling bandwidth usage of a disaster recovery system in accordance with a plurality of recovery point objectives (RPOs), each RPO designating a maximal time loss constraint for data recovery for an enterprise production system, and a corresponding bandwidth allocation for the disaster recovery system to use in replicating data for the enterprise production system, wherein the RPOs are applied in accordance with a calendar-based schedule of dates and times, and (ii) for issuing an RPO alert when the RPO maximal time loss constraint for a current date and time is not satisfied.

Multi-RPO data protection

Hypervisor virtual server system, and method for providing data services within a hypervisor virtual server system

An enterprise disaster recovery system, including at least one data disk, a processor for running at least one data application that reads data from the at least one data disk and writes data to the at least one data disk over a period of time, a recovery test engine that (i) generates in parallel a plurality of processing stacks corresponding to a respective plurality of previous points in time within the period of time, each stack operative to process a command to read data at a designated address from a designated one of the at least one data disk and return data at the designated address in an image of the designated data disk at the previous point in time corresponding to the stack, and (ii) that generates in parallel a plurality of logs of commands issued by the at least one data application to write data into designated addresses of designated ones of the plurality of data disks, each log corresponding to a respective previous point in time, wherein the plurality of previous points in time within the period of time are specified arbitrarily by a user of the system.

Multiple points in time disk images for disaster recovery

A system for cloud-based data services for multiple enterprises, including a plurality of cloud hypervisors that cooperatively provide cloud-based services to multiple enterprises, each hypervisor including a plurality of cloud virtual servers, each cloud virtual server being associated with an enterprise, at least one cloud virtual disk that is read from and written to by the at least one virtual server, each cloud virtual disk being associated with an enterprise, and a virtual data services appliance, which provides cloud-based data services, and multiple data services managers, one data services manager per respective enterprise, each of which coordinates the respective virtual data services appliances for those cloud hypervisors that service its corresponding enterprise.

A cross-host multi-hypervisor system, including a plurality of host sites, each site including at least one hypervisor, each of which includes at least one virtual server, at least one virtual disk read from and written to by the at least one virtual server, a tapping driver in communication with the at least one virtual server, which intercepts write requests made by any one of the at least one virtual server to any one of the at least one virtual disk, and a virtual data services appliance, in communication with the tapping driver, which receives the intercepted write requests from the tapping driver, and which provides data services based thereon, and a data services manager for coordinating the virtual data services appliances at the site, and a network for communicatively coupling the plurality of sites, wherein the data services managers coordinate data transfer across the plurality of sites via the network.

A system for efficiently transmitting data from a first site to a remote site over a communication medium. The data includes a storage for storing data in sub-segment boundaries, such that few sub-segments are accommodated in each block. The system further includes a storage for storing data including signature data. Each one of the sub-segments is associated with a signature of considerably smaller size than its respective sub-segment. The system includes a processor configured to perform the following, as many times as required: receiving a block and partitioning it into sub-segments. For each sub-segment in the block the processor calculating a signature. It then determines whether the calculated signature matches a corresponding signature, if any, stored in the signature storage, and in case of no match (indicating that the sub-segment is new or has been modified), transmitting the sub-segment to the remote site and store the calculated signature in the signature storage.

Apparatus for continuous compression of large volumes of data

Methods and systems for accessing data from a previous point in time, including receiving data stored in a storage system of addressable memory, the storage system including a plurality of addresses, receiving a journal history of write transactions for the storage, each write transaction including (i) a plurality of designated memory addresses, (ii) a corresponding plurality of current data to write in the designated memory addresses for storage, and (iii) a time indicator, generating a data structure that represents a virtual interface to the storage at a specified point in time, based on the write transactions in the journal history having a time subsequent to the specified point in time, and enabling a user to process the data from the specified point in time, via the virtual interface and the journal history.

Methods and apparatus for point in time data access and recovery

A system for consistent data recovery, including a storage area network (SAN) of initiator nodes and target nodes, wherein initiator nodes issue I/O requests and target nodes respond to I/O requests, the SAN being represented logically as a plurality of consistency groups of nodes, G, . . . , Gn, each consistency group representing at least one logical storage unit (LU), each LU acting as a target node within the SAN, at least one host device, each host device acting as an initiator within the SAN, each host device including a transmitter for issuing I/O requests to at least one LU, and each host device being associated with a host device agent, the host device agent including an interceptor for intercepting I/O requests issued by the host device, and a router for forwarding the intercepted I/O requests to a data protection appliance, a data protection appliance (DPA) acting as both an initiator node and a target node within the SAN.

Growing community of inventors

Tel Aviv, Israel

Ziv Kedem