NS0-157 · Question #91
To achieve high-availability within a FAS8080 EX HA pair, which two requirements are needed? (Choose two.)
The correct answer is A. Connect the NVRAM HA interconnects of the HA pairs. B. Connect multiple paths from the controllers to the host. Achieving high availability in a FAS8080 EX HA pair requires both the NVRAM HA interconnect cabling between controllers and multiple host paths to each controller.
Question
To achieve high-availability within a FAS8080 EX HA pair, which two requirements are needed? (Choose two.)
Options
- AConnect the NVRAM HA interconnects of the HA pairs.
- BConnect multiple paths from the controllers to the host.
- CConnect the local node to the partner node's disk shelves.
- DEnable auto-giveback.
How the community answered
(61 responses)- A89% (54)
- C7% (4)
- D5% (3)
Why each option
Achieving high availability in a FAS8080 EX HA pair requires both the NVRAM HA interconnect cabling between controllers and multiple host paths to each controller.
The NVRAM HA interconnect cables physically link the NVRAM cards between the two controllers, allowing in-flight write data to be mirrored so the partner node can preserve and replay those writes during a takeover.
Multiple paths from each controller to the hosts are required so that if one controller fails, host I/O can continue uninterrupted through the surviving controller's paths without manual reconfiguration.
Connecting the local node's cabling to the partner node's disk shelves supports disk access during takeover but is not a primary HA establishment requirement at the same tier as NVRAM interconnects and host multipathing.
Auto-giveback is an optional configuration setting that automates resource return after a failover event, but it is not a physical or connectivity requirement to establish the HA pair itself.
Concept tested: FAS8080 EX HA pair hardware requirements for high availability
Source: https://docs.netapp.com/us-en/ontap/high-availability/ha-interconnects-concept.html
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