Emc IP Holding Company LLC

Rakesh Kumar Thakur

Sneha Yadav

Koundinya Koorapati

Ashwini Joshi

Oguzhan Ozmen

Usha Narasappa

Deepak Prakash Ghivari

Shailesh Jain

Techniques for non-disruptive upgrade of a storage appliance may include: restarting a first portion of nodes running a target software version while also running a current software version on a second portion of the nodes, wherein the non-disruptive upgrade is performed to upgrade the nodes of the storage appliance from the current software version to the target software version; performing I/O forwarding where I/Os from the host initiators are serviced using the second portion of the nodes and not serviced using the first portion of the nodes; and determining, in accordance with host initiator login information, whether to continue with the non-disruptive upgrade of the nodes to the target software version. Such techniques may be used, for example, to avoid data unavailability for one or more hosts using the host initiator login information.

Non-disruptive upgrade of storage appliance nodes using host initiator login information to avoid data unavailability

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Bengaluru, India

Rakesh Kumar Thakur