Emc IP Holding Company LLC

Sally Golan

Alex Kulakovsky

Yuval Harduf

Liran Loya

Alexander Shraifel

Erez Bashi

Performing upgrades may include: receiving a package including upgrade types each identifying a different upgrade subcomponent of the package; receiving a metadata file describing the package; receiving selection information identifying one or more of the upgrade types of the metadata file, wherein the one or more upgrade types identified by the selection information denote one or more corresponding upgrade subcomponents of the package to be upgraded; and performing first processing that upgrades a system in accordance with the metadata file and the selection information. The metadata file may identify an order for installing upgrade subcomponents, which upgrade subcomponents may be installed in parallel, and dependencies between different upgrade subcomponents. Modules of a system may implement a multi-phase state machine. During installation of an upgrade subcomponent, the multiple phases may be completed in a specified order where code of the modules implementing each phase may be invoked.

Meta data driven upgrades

A method for use in a first storage array, comprising: detecting whether a second storage array has designated the first storage array as a locally-preferred storage array, the detecting being performed when a first link between the second storage array and a witness node is down; setting a value of a first configuration setting to indicate that the first storage array is designated as a system-preferred storage array, the value of the first configuration setting being stored in a memory of the first storage array, the value of the first configuration setting being set only when the second storage array has designated the first storage array as a locally-preferred storage array; detecting, by the first storage array; and when the second link is down, assuming one of an active role or a passive role based, at least in part, on the value of the first configuration setting.

Storage system with passive witness node

An apparatus in one embodiment is configured to extract a set of components utilized in a first version of a storage controller operating system (OS) to a designated partition of a storage system on which the first version of the storage controller OS is to be installed, and to identify changes to be applied for installing the first version of the storage controller OS by comparing content of the extracted set of components utilized in the first version of the storage controller OS with content of components utilized in a second version of the storage controller OS that is currently installed. The apparatus is also configured to apply, utilizing at least one rule corresponding to at least one component utilized in the first version of the storage controller OS, at least one of the identified changes to upgrade to the first version of the storage controller OS.

Growing community of inventors

Tel Aviv, Israel

Sally Golan