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NS0-093 Prüfungsinformationen - NS0-093 Fragenkatalog

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Network Appliance NetApp Accredited Hardware Support Engineer NS0-093 Prüfungsfragen mit Lösungen (Q46-Q51):

46. Frage
Which two steps are required to replace a drawer in a DS460c shelf? (Choose two.)

A. Power off the shelf.
B. Evacuate all drives in the drawer.
C. Shut down both nodes.
D. Disconnect the cable chains from the chassis.

Antwort: B,D

Begründung:
To replace a drawer in a DS460c shelf, the following steps must be taken:
* Why this is required:Cable chains connect the drawer to the shelf and must be disconnected to safely remove the drawer.
1. Disconnect the cable chains from the chassis
* Why this is required:Drives must be removed to avoid damage during the drawer replacement process and to reduce the weight of the drawer for safe handling.
2. Evacuate all drives in the drawer
* A. Shut down both nodes:
* This is unnecessary because DS460c shelves support online replacement, and the system can remain operational.
* C. Power off the shelf:
* This is also unnecessary. DS460c shelves are hot-swappable, meaning they do not require the shelf to be powered down.
Why Other Options Are Incorrect:
* "DS460c Hardware Service Guide" explains the procedure for replacing a drawer.
* NetApp's "Field Replacement Guide" for DS460c shelves emphasizes online and hot-swappable replacements.
References:

47. Frage
Which two tools can be used to recover an inconsistent aggregate? (Choose two.)

A. wafl_check
B. wafliron
C. wafl snapiron
D. file check

Antwort: A,B

Begründung:
To recover an inconsistent aggregate, the following tools can be used:
* What it does:This tool is used to perform a consistency check on WAFL metadata. It identifies and attempts to fix WAFL inconsistencies in aggregates.
* When to use:Run wafl_check after identifying WAFL inconsistencies to repair minor metadata issues.
1. wafl_check
* What it does:This tool repairs WAFL inconsistencies by reconstructing metadata. It is more powerful than wafl_check and should only be run under NetApp Support guidance, as improper use can result in data loss.
* When to use:Use wafliron for severe WAFL inconsistencies that cannot be resolved by wafl_check.
2. wafliron
* A. file check:
* This is not a valid NetApp tool.
* C. wafl snapiron:
* While similar in name, snapiron is used for snapshot recovery, not aggregate recovery.
Why Other Options Are Incorrect:
* "ONTAP Aggregate Troubleshooting Guide" details the usage of wafl_check and wafliron.
* NetApp Support documentation provides guidelines for recovering inconsistent aggregates.
References:

48. Frage
You are reviewing the output of disk show and one of the disks is reporting a container type of "unknown".
What is causing this status?

A. The disk does not have an owner.
B. The disk is not owned by a member of the high-availability (HA) pair.
C. The disk is in the maintenance center.
D. The disk is failed.

Antwort: A

Begründung:
Understanding "Container Type: Unknown" in Disk Show Output:
* The "unknown" container type typically indicates that the disk is not properly configured or recognized by ONTAP.
* This status often occurs when a disk does not have an owner assigned.
Root Cause:
* For a disk to be used in an ONTAP system, it must be owned by a member of the high-availability (HA) pair.
* If no ownership is assigned, the disk will not be initialized, resulting in an "unknown" container type.
Steps to Resolve:
* Use the disk assign command to manually assign ownership of the disk.
* Example: storage disk assign -disk <disk_name> -owner <node_name>
NetApp Reference Documentation:
* "ONTAP Disk Management Guide" explicitly states that unowned disks report "unknown" container type until they are assigned to a node.
* This is further detailed in the "ONTAP Troubleshooting Guide" under disk configuration issues.

49. Frage
On a NetApp FAS9000 system, which two field replaceable units (FRUs) are supported for replacement without takeover? (Choose two.)

A. DCPM module
B. NVRAM module
C. I/O module
D. caching module

Antwort: B,C

Begründung:
FRUs on FAS9000 Supporting Replacement Without Takeover:
* A (I/O Module): I/O modules can be replaced hot (without takeover) to maintain system uptime during hardware servicing.
* D (NVRAM Module): NVRAM modules on FAS9000 can also be replaced without a node takeover, ensuring data integrity during replacement.
Why Other Options Are Incorrect:
* B (DCPM Module): The DCPM (Data Center Power Management) module is not hot-swappable and requires a node takeover.
* C (Caching Module): The caching module is integrated and typically requires a node takeover or power-down for replacement.
NetApp Reference Documentation:
* Refer to the "NetApp FAS9000 Hardware Service Guide" for supported FRU replacement procedures and operational constraints.

50. Frage
What is the recommended value for disk and CPU use when you plan an upgrade?

A. less than 50%
B. less than 70%
C. less than 90%
D. less than 85%

Antwort: B

Begründung:
Upgrade Considerations for Disk and CPU Utilization:
* During an ONTAP upgrade, it is critical to ensure the system has sufficient resources to handle the upgrade process without impacting normal operations.
Recommended Threshold:
* NetApp recommends that both disk and CPU utilization should be below 70% before initiating an upgrade. This ensures that there is enough headroom for the upgrade operations and avoids performance degradation.
Steps to Verify Utilization:
* Use the system node show -fields cpu command to check CPU usage.
* Use the storage aggregate show -fields used command to check aggregate disk utilization.
NetApp Reference Documentation:
* "ONTAP Upgrade and Maintenance Guide" specifies the 70% threshold for disk and CPU usage during upgrade planning.
* The "ONTAP Performance Management Guide" provides methods for monitoring system resource utilization.

51. Frage
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NS0-093 Fragenkatalog: https://www.zertpruefung.ch/NS0-093_exam.html