Understanding hardware components is a core requirement within ONTAP SAN concepts. The exhibit highlights several key components on a FAS9000 system that are essential to system operation and high availability.

The large central components shown are the controllers, which house the CPUs, memory, and network interfaces responsible for data processing and cluster operations. Adjacent to the controllers are the NVRAM modules, which are critical for write caching and data integrity. NVRAM ensures that incoming write operations are safely logged and protected in the event of power loss or controller failover.

The exhibit also highlights the serial ports, which are used for low-level system access during installation, troubleshooting, or recovery scenarios. Serial ports are especially important during initial setup or when network access is unavailable.

Finally, the highlighted FlashCache modules provide read caching functionality. FlashCache accelerates read-intensive workloads by caching frequently accessed data on flash memory, improving overall system performance.

Other options are incorrect because they either include components not highlighted in the exhibit (such as power supplies or USB ports) or misidentify the flash modules. Therefore, the correct set of components shown in the exhibit is NVRAM-Module, Controller, Serial-Port, FlashCache-Module.

As part of the ONTAP SAN solution assessment domain, NetApp defines strict rules governing cluster composition and scalability . ONTAP clusters support a maximum of 24 nodes , and within that limit, clusters can include different controller models , provided they are supported by the same ONTAP release and meet hardware compatibility requirements.

Both FAS8060 and FAS8080 controllers are supported within ONTAP clusters and can coexist in a single cluster configuration. NetApp installation documentation explicitly allows mixed-controller clusters as long as the controllers are compatible and running the same ONTAP version.

In this scenario, there are six total controllers available: three FAS8060 and three FAS8080. Since ONTAP supports heterogeneous clusters and there is no architectural limitation preventing all six controllers from participating, the largest possible cluster is achieved by including all six nodes .

Smaller cluster sizes—two, four, or five nodes—are technically valid but do not meet the requirement of providing the largest possible cluster . The assessment objective focuses on maximizing usable resources while staying within supported configuration guidelines.

Additionally, ONTAP automatically manages performance balancing and high availability across mixed-controller clusters. Each node pair forms an HA pair, and ONTAP ensures consistent data access across the entire cluster fabric.

Therefore, the correct answer is D , a cluster made up of six nodes.

AFF A250 systems use a converged networking design , where the same physical ports are used for both cluster interconnect traffic and HA interconnect traffic . This differs from older platforms that used dedicated HA interconnect ports.

The NetApp CN1610 switches only support 10GbE , which is insufficient for AFF A250 systems. AFF A250 platforms require 25GbE-capable cluster switches to support both cluster and HA interconnect traffic.

Because the cluster ports are operational, the nodes can join the cluster. However, the HA interconnect traffic cannot be established due to insufficient switch capability, which explains why the NVRAM log cannot synchronize and the HA partner is unreachable.

Therefore:

The AFF A250 requires switches with 25GbE port support

The AFF A250 uses the same ports for cluster and HA interconnect

Statements involving 40GbE or separate HA ports are incorrect.

The correct answers are C and D .

This scenario is about iSCSI SAN path visibility after cluster expansion. ONTAP uses Selective LUN Map (SLM) concepts so that hosts do not automatically see every LUN through every node, which would create unnecessary paths. ONTAP documentation explains that with SLM, when a LUN map is created, the LUN is accessible through paths on the node that owns the LUN and its HA partner, and this behavior is controlled through the reporting-nodes list.

If you want additional paths (including non-optimized paths) from newly added nodes, you must ensure the new nodes can be included in the reporting scope for those LUN mappings. ONTAP provides an explicit mechanism for this: the lun mapping add-reporting-nodes command is used before or after data mobility events to add nodes to the reporting-nodes list for a LUN mapping. This directly matches option C (reporting nodes) .

However, even if reporting-nodes is expanded, hosts only gain usable iSCSI access if the target LIFs are reachable/allowed. ONTAP documentation describes that portsets can be used with SLM to further restrict access, and when using SLM with portsets, LUNs are accessible on the set of LIFs included in the portset (on the owning node and its HA partner). Therefore, to “allow non-optimized paths from the AFF A250 nodes,” you must verify whether portsets are being used and that the appropriate new iSCSI LIFs are included (or that no restrictive portset blocks them). That makes option A (port sets) the second correct configuration item.

Option B (switch zoning) applies to FC fabrics, not iSCSI. Option D (failover groups) affects NAS/management LIF failover behavior and does not control SAN LUN reporting visibility in the way SLM/reporting-nodes and portsets do.

ONTAP automatically selects RAID-DP as the default RAID type for SSD-based aggregates, including 3.8 TB SSDs, in ONTAP 9.8.

RAID-DP provides double-parity protection, allowing the aggregate to withstand two simultaneous disk failures without data loss. RAID-TEC is reserved for very large aggregates and is not the default. RAID 4 and RAID 0 do not provide adequate protection for production systems.

Therefore, the correct answer is D (RAID DP) .

Within the ONTAP SAN implementation and configuration domain, automatic port placement is a key installation feature designed to simplify initial network setup during cluster deployment. In ONTAP 9.8, when controller data ports are discovered, ONTAP automatically analyzes physical port connectivity, speed, and role, and assigns those ports to appropriate broadcast domains and subnets .

Broadcast domains define Layer 2 boundaries and group ports that share the same network reachability. During installation, ONTAP automatically creates and assigns broadcast domains based on detected network topology and intended port usage. This behavior is explicitly described in NetApp installation objectives as part of reducing manual network configuration during initial setup.

Subnets are also automatically created and associated when automatic port placement is enabled. ONTAP uses subnets to manage pools of IP addresses for data LIF creation. By automatically configuring subnets, ONTAP enables rapid deployment of NAS and SAN data LIFs without requiring administrators to manually define IP address ranges during installation.

By contrast, routes are not automatically configured by automatic port placement. Routes must be explicitly defined by the administrator to control Layer 3 traffic flow between networks. Similarly, IPspaces are logical network containers that must be deliberately designed and created based on multi-tenancy or isolation requirements. IPspaces are never automatically created by ONTAP during installation because they have architectural implications that require administrator intent.

Therefore, the two ONTAP network settings that are automatically configured by automatic port placement are broadcast domains and subnets , making C and D the correct answers.

NetAppDocs provides official installation documentation, posters, and step-by-step guidelines. It is the correct resource for resolving disk ownership and installation workflow issues.

Broadcom BES-53248 cluster interconnect switches require a Reference Configuration File (RCF) to define supported port roles, speeds, breakout behavior, ISLs, and node-facing ports. By default, only a subset of ports is enabled for cluster connectivity. Ports 0/17 through 0/20 are not active for node connections unless explicitly configured by the correct RCF.

When new controllers are cabled to ports that are not enabled or correctly configured for cluster interconnect traffic, the ONTAP nodes cannot establish cluster LIF communication and therefore cannot join the cluster. Installing the correct RCF configures these ports with the required VLANs, MTU, flow control, and speed settings so that cluster traffic can pass.

A license file is not required for basic cluster interconnect functionality. The Cluster Switch Health Monitor (CSHM) configuration file enables monitoring, not port functionality. Rebooting controllers does not resolve switch-side configuration issues.

Therefore, installing the reference configuration file is the required corrective action.