Dell Products Inc.

Emc IP Holding Company LLC

Koundinya Koorapati

Sneha Yadav

Sadasivam Shanmugam

Yamuna Hanumanthu

Ashwini Joshi

Nadimpalli Sunil Kumar Raju

Deepak Prakash Ghivari

Nalluri Sri Varsha

Oguzhan Ozmen

Usha Narasappa

Ratan Lal

Atifa Kheel

Rakesh Kumar Thakur

Shailesh Jain

Usha B Narasappa

An apparatus comprises a processing device configured to select, from a first storage virtualization appliance, virtual volumes to migrate to a second storage virtualization appliance. The processing device is also configured to determine a configuration of first storage elements of the first storage virtualization appliance utilized to implement the selected virtual volumes, and to provision second storage elements for implementing the selected virtual volumes on the second storage virtualization appliance, the second storage elements being provisioned in an inactive state. The processing device is further configured to pause input-output operations directed to the selected virtual volumes on the first storage elements, to modify the first storage elements from an active state to the inactive state and the second storage elements from the inactive state to the active state, and to resume input-output operations directed to the selected virtual volumes on the second storage elements of the second storage virtualization appliance.

Automated migration of virtual volumes between storage virtualization appliances

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

Growing community of inventors

Bengaluru, India

Koundinya Koorapati