Heard that HUS supports NDU even where there's only a single path between server and the HUS storage system. Is it true in both FC and iSCSI case?
When updating firmware in a Dual Controller Array, continuing the I/O of both Controllers during the upgrade is an option, perform“(1) Update continuing the I/O of both Controllers (Dual controller configuration)” (FIRM 01-0050).
This option requires that the host I/O workload is low.
There is impact to host I/O performance during the upgrade.
This should be the same for FC and iSCSI.
Many customers do not use this option and prefer to use the alternate path method which does not require the host workload to be as low, and is quicker to complete.
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