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| Section | Objectives |
|---|---|
| Topic 1: Monitoring and Troubleshooting | - Operational monitoring
|
| Topic 2: Grid Installation and Configuration | - Deployment processes
|
| Topic 3: Information Lifecycle Management | - Policy and data placement
|
| Topic 4: Storage Management | - Tenant and bucket administration
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| Topic 5: StorageGRID Architecture and Components | - Core StorageGRID system components
|
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NEW QUESTION # 42
During performance troubleshooting, you notice that the disk device sdc on Storage Node 3 is handling significantly more I/O operations than the other disks.
What is the reason for this behavior?
Answer: D
Explanation:
The increased I/O on sdc is expected when that device corresponds to storage volume 0 (/var/local/rangedb/0), because StorageGRID uses volume 0 for the Cassandra database that stores object metadata. NetApp documents that StorageGRID maintains object metadata independently from object data in Cassandra and reserves space specifically on volume 0 of every Storage Node for metadata storage and essential database operations.
Cassandra performs continuous metadata-related activity, including database reads and writes, compaction, indexing, consistency operations, and repair. Consequently, the disk containing volume 0 can exhibit noticeably higher I/O than the remaining object-storage volumes even when object data itself is reasonably balanced. NetApp diagnostic examples also show sdc associated with /var/local/rangedb/0, illustrating the relationship between this device and the StorageGRID metadata volume.
Option A does not explain persistent device-specific activity because object ingest is handled through StorageGRID services and ILM placement. Option B would indicate an object-placement issue rather than systematically higher I/O on volume 0. Option D is also incorrect because higher utilization is not necessarily caused by a larger number of stored object payloads.
Reference topics: Storage Nodes # Storage Volumes # Volume 0 # Cassandra Object Metadata # Disk I/O and Performance Monitoring
NEW QUESTION # 43
A customer is deploying a new grid across three data centers. Ingested data must always be consistent and available for all read and write operations in the event that one site and an additional node fails.
Which consistency level is required?
Answer: A
Explanation:
The required consistency level is strong-global, specifically using the Quorum strong-global semantics available in StorageGRID 12.0. NetApp defines strong-global as guaranteeing read-after-write consistency for client requests across all sites. With Quorum semantics enabled, a grid containing three or more sites can tolerate a site failure while continuing client operations, provided the required metadata replica quorum remains available.
This directly matches the scenario. NetApp's multisite resiliency guidance states that, for a three-or-more-site deployment using Quorum strong-global, a single site plus a single node failure can occur without interruption to operations or metadata consistency, assuming sufficient object-data protection remains under the ILM configuration.
Option A, all, is unsuitable because every metadata node must acknowledge the update; if a node or site is unavailable, the request fails. Option C, strong-site, only guarantees immediate consistency within one site and does not provide the required global consistency. Option D provides read-after-write consistency for new objects but only eventual consistency for updates, so it does not satisfy the requirement that data remain consistently available for all read and write activity.
Reference topics: StorageGRID 12.0 # S3 Consistency # Strong-global # Quorum Semantics # Multisite Failure Tolerance # Metadata Replication
NEW QUESTION # 44
A StorageGRID system is composed of Linux-based nodes running on hosts in your data center. You want to decommission Host-A containing Storage Node Linux-Node-1, and you must migrate Linux-Node-1 to a new host, Host-B.
What is the correct sequence of steps to migrate Linux-Node-1 from Host-A to Host-B?
Answer: B
Explanation:
NetApp defines a specific workflow for migrating a Linux-based StorageGRID node between hosts. The source node must first be shut down cleanly using storagegrid node stop. After the node has stopped, the administrator runs storagegrid node export on the source host. The export output identifies the /var/local storage volume and provides the corresponding import command to use on the target host.
On Host-B, the administrator runs storagegrid node import against the exported node storage. NetApp then requires the imported configuration to be checked with storagegrid node validate. After successful validation, the migrated node is started with storagegrid node start, and Grid Manager is used to confirm that the node returns to a green operational state with no alerts.
Therefore, C represents the required migration sequence. Although the option summarizes the final validation
/start phase, its stop # export # import # verify ordering matches NetApp's prescribed procedure.
Option A is incorrect because Grid Manager does not automatically migrate Linux containers. Option B reverses the export/import sequence. Option D incorrectly treats migration as a new StorageGRID installation and node reconfiguration.
Reference topics: StorageGRID Maintenance # Linux Host Migration # Node Stop # Node Export # Node Import # Validate # Start # Grid Manager Verification
NEW QUESTION # 45
A majority of your data is required to be stored locally for 6 months, then remain available for 7 years.
However, a bucket named "bank-records" has a compliance requirement where you must keep immutable copies of the object indefinitely. Your company policy is to use cloud for long-term storage, when possible.
Which placement policy is used to satisfy the requirement for the "bank-records" bucket?
Answer: B
Explanation:
The bank-records bucket requires indefinite immutable retention, so its ILM rule must comply with StorageGRID S3 Object Lock requirements. NetApp specifies that a compliant ILM rule must create at least two replicated copies or one erasure-coded copy, those copies must reside on Storage Nodes, at least one placement must begin at day 0 using Ingest time, and at least one placement must continue forever. Critically, copies governed by a compliant S3 Object Lock rule cannot be stored in a Cloud Storage Pool.
This requirement directly eliminates A, B, and C because every one of those choices introduces a Cloud Storage Pool. The organization's general preference to use cloud storage for long-term data does not override StorageGRID compliance restrictions for Object Lock-protected content.
NetApp's own bank-records example uses precisely this design: the bucket-specific compliant rule retains an erasure-coded copy on Storage Nodes from day 0 to forever.
Therefore, D is correct. Other noncompliant buckets can still use separate ILM rules that transition data to Cloud Storage Pools after six months, but immutable bank-records objects must remain on compliant StorageGRID Storage Node placements indefinitely.
Reference topics: ILM # S3 Object Lock # Compliant ILM Rules # Storage Nodes # Forever Retention # Cloud Storage Pool Restrictions
NEW QUESTION # 46
An enterprise is expanding a single-site StorageGRID deployment and is adding new nodes on a new subnet.
What is a requirement for configuring the Grid Network?
Answer: D
Explanation:
When an existing StorageGRID deployment is expanded with nodes whose Grid Network IP addresses are on a subnet that has not previously been used, that subnet must be added to the Grid Network subnet list before the expansion is started. StorageGRID maintains this list so that every grid node can correctly route internal Grid Network traffic to the other participating subnets. NetApp StorageGRID 12.0 documentation explicitly states that if any new node uses a new Grid Network subnet, the administrator must add that subnet first; otherwise, the expansion must be cancelled, the subnet added, and the expansion restarted.
The configuration is performed in Grid Manager # Maintenance # Network # Grid Network, where the administrator selects Add another subnet and enters the network in CIDR notation. StorageGRID then distributes the routing configuration throughout the grid.
Option A is incorrect because routes do not need to be configured manually on every node. Option B is incorrect because a StorageGRID Gateway Node provides client load-balancing functions and is not an IP router between Grid Network subnets. Option D is also incorrect; StorageGRID explicitly supports multiple Grid Network subnets, provided they are routable through the configured Grid Network gateway.
Reference topics: StorageGRID Expansion # Grid Network # Grid Network Subnet List # Adding Nodes on New Subnets # Grid Network Routing
NEW QUESTION # 47
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