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| Section | Objectives |
|---|---|
| Topic 1: Monitoring and Troubleshooting | - Operational monitoring
|
| Topic 2: Storage Management | - Tenant and bucket administration
|
| Topic 3: StorageGRID Architecture and Components | - Core StorageGRID system components
|
| Topic 4: Grid Installation and Configuration | - Deployment processes
|
| Topic 5: Information Lifecycle Management | - Policy and data placement
|
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NEW QUESTION # 34
A StorageGRID administrator is deploying a new three-site grid and must configure an information lifecycle management (ILM) policy.
The policy must meet these requirements:
* Objects with the status=archive tag should be protected using a 4+2 erasure coding scheme at a single site.
* All other objects should be protected using 2-copy replication across any two sites.
Which ILM rule configurations satisfy these requirements?
Answer: D
Explanation:
StorageGRID evaluates ILM rules sequentially from the top of the active policy. As soon as an object matches a rule, that rule's placement instructions are applied and the object is not evaluated against subsequent rules.
Therefore, the rule containing the specific status=archive filter must appear before the catch-all rule.
In option A, objects tagged status=archive match Rule 1 and receive 4+2 erasure coding at the designated single-site storage pool. StorageGRID supports 4+2 erasure coding in a one-site storage pool provided that at least six data-capable Storage Nodes are available; seven are recommended.
Objects without the archive tag do not match Rule 1 and proceed to Rule 2. Rule 2 serves as the default rule, providing two replicated copies across the required sites. NetApp requires the default rule to be last and to have no filters, ensuring that it catches every object not matched earlier.
Option C is incorrect because its unrestricted first rule would match every object, preventing the archive- specific rule from ever being evaluated. B applies the protection methods to the wrong object classes, while D provides no rule for non-archive objects.
Reference topics: ILM Policies # Rule Evaluation Order # Advanced Filters/Object Tags # Default Rule # Replication # Single-Site Erasure Coding
NEW QUESTION # 35
A primary interface in an HA group has failed, and the virtual IP address (VIP) has moved to a backup interface.
What happens when the primary interface is restored?
Answer: B
Explanation:
StorageGRID HA groups use an explicit interface priority order. The first interface in that order is the Primary interface and normally hosts all virtual IP addresses assigned to the HA group. If the Primary interface becomes unavailable, StorageGRID automatically moves the VIP addresses to the highest-priority backup interface that remains operational.
Importantly, this behavior includes automatic failback. NetApp states that when the failure is resolved and a higher-priority interface becomes available again, the VIP addresses are automatically moved to the highest- priority available interface. Therefore, once the original Primary interface is restored and considered healthy, StorageGRID automatically transfers the VIP back to it. No administrator intervention or Load Balancer service restart is required.
Options A and C are incorrect because restarting the Load Balancer service is not part of the standard HA failback workflow. Option B is also incorrect because StorageGRID does not permanently leave the VIP on a lower-priority backup interface after the preferred interface has recovered. The configured priority order continues to determine which interface should host the HA group's VIPs.
Reference topics: Grid Manager # High Availability Groups # Interface Priority # Primary/Backup Interfaces
# VIP Failover and Automatic Failback
NEW QUESTION # 36
Your customer has a two-site StorageGRID system, with three Storage Nodes on each site. The customer wants to always read the last written version of an object. They have set up the information lifecycle management (ILM) policy to write a single copy to each site. They have set the ingest policy to Strict and the consistency profile to strong-global. During maintenance on a node on Site-2, an additional node on that site fails, and end users complain about being unable to upload objects to the grid.
What is the cause of these errors?
Answer: B
Explanation:
The failure is caused by the strong-global metadata consistency requirement, not by the Strict ILM placement requirement. StorageGRID stores object metadata in Cassandra, normally maintaining three metadata replicas per site. With three Storage Nodes at Site-2, taking one node down for maintenance and then losing another leaves only one metadata replica available at that site. The required metadata quorum can no longer be achieved for strong-global operations. NetApp documents that strong-global guarantees read-after-write consistency across all sites and requires sufficient metadata replicas to complete the operation.
The distinction from Strict ingest is important. Strict controls object-data placement: all copies specified by the ILM rule must be created before StorageGRID returns success. Here, the ILM rule requires only one copy at each site. Because one Storage Node remains operational at Site-2, StorageGRID can potentially place the Site-2 object copy there. Therefore, the data-placement requirement itself is not necessarily violated.
However, with two of the three metadata-bearing Storage Nodes unavailable at Site-2, Cassandra cannot satisfy the strong-global metadata consistency requirement, causing client PUT operations to fail.
Reference topics: S3 Consistency # Strong-global # Cassandra Metadata Replicas # Metadata Quorum # Strict ILM Ingest Behavior
NEW QUESTION # 37
A customer runs a StorageGRID deployment with six Storage Nodes at a single site. The customer wants to decommission one of the nodes that hosts an Administrative Domain Controller (ADC) service and replace the node with new hardware.
Before proceeding with the decommission, what is done to ensure that grid quorum and metadata operations remain unaffected?
Answer: C
Explanation:
StorageGRID requires an ADC service quorum at each site at all times. The ADC service maintains grid topology information and provides configuration services used throughout the grid. StorageGRID therefore prevents the decommissioning of a Storage Node if removing that node would violate the site's ADC quorum requirements.
StorageGRID 12.0 provides a supported Move ADC procedure specifically for situations where an administrator needs to decommission a Storage Node hosting ADC. The ADC service can be moved to another eligible Storage Node within the same site. The target must not already host ADC and must be either a combined Storage Node or metadata-only Storage Node. NetApp performs the operation through the Grid Management private API, using POST /private/move-adc/start; progress can be monitored with GET /private
/move-adc. The dependent IDNT, ACCT, and RSM services move automatically with ADC.
Option B is invalid because ADC runs on eligible Storage Nodes, not Admin Nodes. Option C is incorrect because StorageGRID 12.0 documents the migration through the Grid Management API rather than a CLI relocation command. Option D is unsupported; administrators do not manually reinstall ADC.
Therefore, A is correct.
Reference topics: StorageGRID Maintenance # Move ADC # ADC Quorum # Storage Node Decommission
# Grid Management API
NEW QUESTION # 38
A certain grid is configured in a network topology where only Admin Nodes and Gateway Nodes have the Client Network configured. Storage Nodes on this grid have only Admin Networks and Grid Networks. A tenant administrator is configuring integration with Apache Kafka for notification services. After setting the correct Uniform Resource Identifier (URI) and Unique Resource Name (URN) entries, the endpoint test validation fails.
What could be a possible cause for this error?
Answer: D
Explanation:
StorageGRID Platform Services traffic, including Apache Kafka event notifications, originates from Storage Nodes that run the Administrative Domain Controller (ADC) service. NetApp explicitly requires these ADC Storage Nodes to have network connectivity to external Platform Services endpoints. For Kafka, StorageGRID normally establishes outbound TCP connectivity from ADC Storage Nodes to the Kafka cluster, using port 9092 by default unless another port is configured.
In this topology, the Storage Nodes do not have Client Network interfaces, so they cannot use a Client Network default route to reach the Kafka endpoint. NetApp's supported alternative is to configure the Storage Nodes with Admin Networks containing appropriate Admin External Subnet List (AESL) entries that provide routes to the external endpoint network. Without the required AESL route on the ADC nodes, StorageGRID cannot validate connectivity to the Kafka endpoint.
Option B incorrectly identifies LDR as the service responsible for sending Platform Services messages.
Option D is irrelevant because Gateway Nodes do not originate these Kafka Platform Services notifications.
Although Platform Services must be enabled for the tenant, the networking details in the scenario specifically identify missing ADC-node endpoint routing as the intended failure.
Reference topics: Platform Services # Kafka Event Notifications # ADC Service # Admin Network # AESL
# External Endpoint Connectivity
NEW QUESTION # 39
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