Convert AFF A250 to drive shelf and upgrade to AFF A400
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Perform a nondisruptive upgrade from an AFF A250 system to an AFF A400 system by converting the AFF A250 nodes to NS224 drive shelves. Then, connect them to the AFF A400 replacement nodes. This moves the AFF A250 onboard storage to the AFF A400 replacement system.
Review the general upgrade scenarios and upgrade considerations for upgrading by moving volumes or storage:
The AFF A250 high-availability (HA) pair controllers are node1 and node2 and the replacement AFF A400 HA pair controllers are node3 and node4.
Before converting AFF A250 node2 to a drive shelf, migrate the logical interfaces (LIFs) and data aggregates on node2 to node1.
Convert AFF A250 node2 to an NS224 drive shelf and then connect to AFF A400 node4 before reassigning drives from node2 to node4.
After converting AFF A250 node2 to an NS224 drive shelf and connecting to AFF A400 node4, reassign the drives that previously belonged to node2 to node4.
Before converting AFF A250 node1 to a drive shelf, migrate the data aggregates, epsilon, and LIFs on node1 to AFF A400 node4.
Convert AFF A250 node1 to an NS224 drive shelf and then connect to AFF A400 node3 before reassigning drives from node1 to node3.
After converting AFF A250 node1 to an NS224 drive shelf and connecting to AFF A400 node3, reassign the drives that previously belonged to node1 to node3.
To complete the upgrade, connect node3 to node4 and then migrate the data LIFs and data aggregates on node4 to node3.