Hewlett Packard Enterprise Development LP

Kevin Kauffman

Nguyen Truong

Gurunatha Karaje

Cristian Medina Abkarian

Michael E Root

Tomasz Barszczak

Sudhanshu Goswami

Tao Jin

Christopher Joseph Corsi

Zaid Bin Tariq

Liam McArdle

A technique includes causing an agent device to setup a replication partnership between a first storage node and a second storage. Causing the agent device to setup the replication partnership includes configuring a proxy server that is associated with the second storage node to establish a secure communication channel for the replication partnership over a public network. Configuring the proxy server includes storing in the proxy server credentials for authenticating the first storage node to use the secure communication channel; and establishing port translations to be used in the secure communication channel in communicating replication data between the first storage node and the second storage node. Causing the agent device to setup the replication partnership may also include communicating replication partnership information to the second node.

Replicating data over a public network

A technique includes setting up a replication partnership between a first storage node and a second storage node. The replication partnership includes establishment of a secure connection between the first storage node and the second storage node using a remote internet protocol address, a base port, and an identifying key pair. A port forwarding configuration may then be created, in part, by adding a pre-established port offset relative to a base port (e.g., a well-known TCP/IP port) for a first of a set of one or more pre-established port offsets. This process may be repeated for each remaining instance of the one or more pre-established port offsets. Encryption keys may be exchanged between the first storage node and the second storage node using at least one of the base port or the pre-established port offsets. Replication between the first storage node and the second storage node may be performed securely using the established communication channels.

Replication of an encrypted volume

Examples include globalized object names in a global namespace. Some examples may relate to creation of an object with a globalized object name in a global namespace based on a determination. The determination may relate to a global namespace name pattern or the determination may be based on globalization information.

Globalized object names in a global namespace

This disclosure is directed to a technique for memory management where physical memory areas may be partitions into a hierarchy of portions, the hierarchy may include a domain level that includes a page level that includes a slice level that includes an object level. Objects within a slice are a consistent size but may be different sized for different slices. A set of states reflecting memory usage status for each of the slices includes: a clean state for unused; a partial state; a full state; and a dirty state. Responses to allocation requests may be performed by selecting objects that are in a most preferred state based on a state allocation cost and a memory allocation cost either alone or in combination. A compact memory layout may be used to reduce run-time fragmentation of memory.

Memory allocator

Certain examples described herein relate to Persistent Reservation commands in a distributed storage system. In one example, a Persistent Reservation command is received. It is determined whether the Persistent Reservation command indicates persistence through power loss. It is also determined whether a group leader of the distributed storage system is synchronized with a backup group leader. Responsive to the group leader being synchronized with the backup group leader, the command is admitted.

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Durham, NC, United States of America

Kevin Kauffman