Netapp, Inc.

Network Appliance, Inc.

Ravi Krishna Budhia

Naveen Bali

Rajesh Desai

James Namboorikandathil Joseph

Manoj Kumar Venkatachary Sundararajan

Abhijeet Prakash Gole

Jose Mathew

Abhishek Naidu

Onkar Bhat

Steven J Valin

Allen J Kilbourne, Ii

Divya Yogesh

One or more techniques and/or systems are provided for data recovery objective modeling. For example, a data recovery objective model may be defined for a storage network environment. The data recovery objective model may be defined based upon a client data ingest rate corresponding to a data change rate by one or more clients of data stored by a first storage controller. The data recovery objective model may be defined based upon an effective throughput of a data transfer utility for replicating modified data from first storage of the first storage controller to second storage of a second storage controller. Statistical utilization data may be collected from the storage network environment, and may be evaluated using the data recovery objective model to determine a data recovery objective metric. If the data recovery objective metric does not satisfy a client specified objective, then a computing resource recommendation may be provided.

Data recovery objective modeling

A system and method for block-based restarts are described. A data storage system interfaces with one or more nodes of a network file system on which a volume is provided in order to read data stored on the volume on a block-by-block basis. Backup data sets capable of recreating the data on the volume are generated from the data blocks read from the volume. The system can interface with a backup memory resource and write the backup data sets to the backup memory resource in a sequential order. As the backup data sets are generated and written to the backup memory resource, restart checkpoints for the data set are also regularly generated and stored for use in restarting the backup process in the event of a recoverable failure in the transfer.

System and method for implementing a block-based backup restart

Various embodiments are generally directed an apparatus and method for receiving a recovery point objective for a workload, the recovery point objective comprising an amount of time in which information for the workload will be lost if a failure occurs, and determining a service level objective for a replication transfer based on the recovery point objective, the replication transfer to replicate information on a destination node to maintain the recovery point objective. Various embodiments include dynamically controlling one or more resources to replicate the information on the destination node based on the service level objective and communicating information for the replication transfer from the source node to the destination node.

Techniques for dynamically controlling resources based on service level objectives

A network storage system includes a non-volatile memory to store data including a log of received data access requests, and a cluster interconnect adapter through which to send data to a cluster partner. The nonvolatile memory and the cluster interconnect adapter are implemented in a single device connected to an expansion bus in the network storage system. Communication with the nonvolatile memory is carried out using LDMA, and communication with the cluster partner is carried out using RDMA via the cluster interconnect adapter. LDMA and RDMA functionality are merged in a common software stack.

Multicasting message in a network storage system to local NVRAM and remote cluster partner

Network storage system with NVRAM and cluster interconnect adapter implemented in a single circuit module

The status of an appliance may be monitored using promiscuous packets and network reads. In order to establish a peer-to-peer connection between two appliances, a connection manager may issue a communication to a first appliance to establish a connection with a second, remote appliance. The connection manager issues a similar communication to the second appliance. The first appliance issues a promiscuous packet to the second appliance including connection information to establish a peer connection between the two appliances. The first appliance continues to issue the promiscuous packets even after the connection is established to indicate that the first appliance is still available. If the second appliance does not receive a promiscuous packet, the second appliance may attempt to perform a read over the connection. If the attempt to perform a read fails, the second appliance can notify the connection manager that the connection is no longer active.

Method and apparatus for monitoring a connection in a peer-to-peer network

Method and apparatus for assigning a local identifier to a cluster interconnect port in a network storage system

In one embodiment, the invention provides a method for establishing links between Fiber Channel (FC) protocol node devices through a FC fabric. In the method a common name is assigned to a pair of ports. Each port in the pair is located on first and second FC node devices, respectively. The common name-to-port assignment is then stored within a name server for the FC fabric. Each port in the pair of ports is configured to query the name server to establish an identity for the other port in the pair of ports based on the common name. The first and second FC node devices are configured to create a link between the pairs of ports that have been assigned a common name.

Creating links between nodes connected to a fibre channel (FC) fabric

Use of queue pairs for local communication in a network storage system

Network storage system with shared software stack for LDMA and RDMA

In one embodiment the invention provides a method for establishing a point-to-point link between two peer nodes in a communications network. According to the method, one of the client and server roles is assigned to each of the two nodes based on a rule. Thereafter, the point-to-point link is established between the two nodes based on a predefined client-server connection protocol.

Growing community of inventors

San Jose, CA, United States of America

Ravi Krishna Budhia