Free Practice Questions for Netapp NS0-516 Exam

In a Dynamic Disk Pool (DDP), the system is designed to handle drive failures efficiently without impacting data availability. When a drive fails within a DDP and there is no free capacity, the data from the failed drive is rebuilt using preservation capacity within the DDP.

Dynamic Disk Pools use distributed sparing, which allows the spare capacity to be spread across all the drives in the pool rather than relying on dedicated hot spare drives. This distribution ensures that the rebuild process starts immediately and can be completed faster than traditional RAID systems because the workload is shared across more drives.

The preservation capacity is essentially reserved space within the DDP that can be utilized in the event of a drive failure to rebuild the data. This approach helps in maintaining redundancy and protecting data integrity even when a drive fails.

References:

NetApp E-Series Storage System Documentation

SANtricity System Manager User Guide

To increase the throughput of an iSCSI host port on a NetApp E-Series system, you should change themaximum transmission unit (MTU)setting from its default value.

Maximum Transmission Unit (MTU):The MTU size determines the largest packet that can be sent over the network without needing to be fragmented. By increasing the MTU size, you can reduce the overhead associated with packet processing and improve throughput. For example, setting the MTU to 9000 bytes (Jumbo Frames) can enhance performance for iSCSI traffic.

References:

NetApp E-Series SANtricity Storage Manager User Guide

NetApp Best Practices for Configuring iSCSI with E-Series

The E2800 controller supports Fibre Channel (FC) and iSCSI as base host connectivity options.

FC provides high-speed connectivity for SAN environments.

iSCSI allows for IP-based storage networking, facilitating connectivity over existing Ethernet networks.

References: NetApp E2800 Series Hardware Guide, which lists supported host interfaces.

Cabling method: It is important to distribute the connections for redundancy and balanced performance.

EXP1 and EXP2 ports: By dividing these ports between the A-side and B-side IOM-12 modules, the system ensures balanced load and failover capabilities.

References: NetApp E-Series hardware setup and configuration guide.

iSCSI Multipathing: Enables multiple paths for data to travel between the host and storage, providing redundancy and increased performance.

Steps to Enable:

iSCSI IP Setup: Configure IP addresses for the iSCSI interfaces on both the E-Series system and the Windows host to ensure proper network communication.

Host Utilities: Install NetApp E-Series Host Utilities on the Windows host to provide the necessary drivers and multipathing software.

References: NetApp E-Series SANtricity Software and Windows Host Utilities Installation and Configuration Guide.

Brocade Switch Management: The native GUI switch tool for managing Brocade switches and directors is essential for network administrators to configure and monitor these devices.

Web Tools: Brocade Web Tools is a browser-based application that provides a graphical interface for managing Brocade switches and directors. It allows users to perform various management tasks such as zoning, firmware updates, and performance monitoring.

Features of Web Tools: The tool offers an intuitive interface, making it easier for administrators to perform complex tasks and troubleshoot issues effectively.

References:

Brocade Fabric OS Administrator's Guide

NetApp Implementation Engineer - SAN Specialist - E-Series manuals

If the management host loses the ability to manage the E-Series system through in-band management but still has access to data volumes, the most likely cause is thatthe access volume was un-mapped. The access volume is crucial for in-band management as it provides a path for management commands.

In-band management relies on this special volume to communicate management commands between the host and the storage system. If the access volume is un-mapped, the management interface on the host will no longer be able to send these commands, even though data volumes remain accessible.

References:

NetApp E-Series SANtricity Storage Manager Documentation

NetApp Knowledge Base Articles

Understand Pre-Upgrade Health Check:

Purpose:The pre-upgrade health check is designed to ensure the system is in a stable state before proceeding with firmware or software upgrades. This helps to avoid disruptions and data loss.

Volumes on Non-Preferred Path (B):

Issue:If volumes are reported on a non-preferred path, it indicates that there might be a pathing issue or an imbalance in the I/O load.

Impact:Non-preferred paths can lead to performance degradation and increased latency, which might cause issues during the upgrade process.

Resolution:Ensure that all volumes are accessible through their preferred paths before initiating the upgrade.

Identify the Orphaned Volume:

Step:Use SANtricity System Manager to identify the orphaned volume.

Reason:To determine which volume has lost its mirror relationship.

Remove the Mirroring Relationship:

Step:Access the mirroring settings for the orphaned volume and remove the existing relationship.

Reason:The current relationship is invalid and needs to be removed to reset the configuration.

Re-create the Mirroring Relationship:

Step:Establish a new mirroring relationship for the previously orphaned volume.

Reason:To restore the asynchronous mirroring setup with a valid configuration.

References:

NetApp SANtricity System Manager User Guide

NetApp Asynchronous Mirroring Best Practices Guide