What are three reasons to use Oracle Enterprise Manager for the Oracle ZFS Storage Appliance family?
A. to raise alerts and violations based on thresholds and monitoring information collected by the tool
B. to monitor Oracle ZFS Storage Appliances
C. to gather information about the storage system, configuration, and performance of accessible storage components
D. to back up datasets from Oracle ZFS Storage Appliances
E. to log a service call to the Oracle Support hotline
Answer: A,B,C
Explanation:
Oracle Enterprise Manager Plug-in for Oracle ZFS Storage Appliance provides monitoring and provisioning for all Oracle ZFS Storage Appliance models. In addition, the plug-in provides the following primary features:
References: http://www.oracle.com/technetwork/oem/grid-control/downloads/zfs-storageplugin-487867.html
Question No : 2
Which two actions would you take if a rolling upgrade procedure fails with an unexpected error?
A. Retry the failed upgrade by using the CLI or BUI in case of a transient error.
B. Contact the storage administrator or support provider.
C. Factory-reset both the controllers.
D. Perform a series of takeovers and failbacks until the cluster operates normally.
E. Use the operating system shell to manually restart the upgrade.
F. Conduct an initial reset on both controllers.
Answer: A,D
Explanation:
D: If a serious problem appears, roll back controller A. Controller A reboots and controller B takes over and runs the previous software version. When controller A recovers, it also runs
the previous software version.
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Question No : 3
With which option would you configure a storage pool to meet the requirement of highest performance and high availability for random disk IOPS?
A. RAID-5
B. RAID-ZR
C. RAID-1
D. RAID-Z2
E. RAID-Z3
Answer: E
Explanation:
Z3 is triple-disk failure protection within a multiple disk set, where stripe width var pool disk count.Data is triply mirrored, yielding a very highly reliable and high-performing system (for
example, storage for a critical database). This configuration is intended for situations in which maximum performance and availability are required. Compared with a two-way mirror, a three-way mirror adds additional IOPS per stored block and higher level protection against failures.
Question No : 4
As a system administrator, you find that the ILOM Service Processor is hung. Which three methods can you use to fix this problem?
A. Power down by using the power button.
B. Reset the Service Processor from the server back panel.
C. From the Oracle ILOM command-line interface (CLI), enter: reset /SP.
D. From the Oracle ILOM web interface, click Administration > Maintenance > Reset SP.
Answer: B,C,D
Explanation:
Resetting the Service Processor Using Oracle ILOM
If the Oracle ILOM service processor (SP) is hung, Oracle ILOM provides two methods to reset it:From the Oracle ILOM command-line interface (CLI), type: reset /SP. From the Oracle ILOM web interface, click Administration > Maintenance > Reset SP.
If the Oracle ILOM SP is hung and you cannot reset it using the Oracle ILOM web interface or the Oracle ILOM CLI command, use the following procedure to reset the SP from the server back panel.Using a stylus, press the Reset SP pinhole button that is located on the server back panel.Figure SP Reset Pinhole Button Location
References: https://docs.oracle.com/cd/E37831_01/html/E48558/z40002791433422.html
https://docs.oracle.com/cd/E37831_01/html/E48558/z40002791433048.html
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Question No : 5
Which hardware failure cannot be prevented by the No Single Point of Failure feature on a ZFS Storage Appliance?
A. disk backplane failure
B. JBOC failure
C. controller failure
D. power supply failure
Answer: B
Explanation:
Adding a single JBOD to a double parity RAID-Z NSPF config makes it impossible to preserve NSPF characteristics. However, you can still add the JBOD and create RAID stripes within the JBOD, sacrificing NSPF in the process.
References: https://docs.oracle.com/cd/E51475_01/html/E52872/godge.html
Question No : 6
Which four actions must you perform to access Active Directory (AD) in order to create appropriate authentication permissions?
A. Enter the details of a domain administrator who has the authority to allow the Oracle ZFS Storage Appliance to join Active Directory (AD).
B. Enter the object class mappings for posixAccount and shadowAccount.
C. From the Configuration > Services > Active Directory page, click the Join Domain button.
D. Ensure that the clocks on the Oracle ZFS Storage Appliance and Windows Active Directory (AD) domain controllers are synchronized.
E. Ensure that the Domain Name Server (DNS) configuration refers to the same DNS server as the Active Directory servers.
Answer: A,C,D,E
Explanation:
Configuring the Oracle ZFS Storage Appliance for AD Access
(E) In order to create the appropriate authentication objects and permissions, the Oracle ZFS Storage Appliance should be configured to access AD. The DNS service plays a large
role in AD and the Oracle ZFS Storage Appliance must therefore be configured to use the Windows DNS Service.
(D) Clock synchronization is also important for correct AD operation. Clock skew between the Oracle ZFS Storage Appliance and the AD Domain Controllers must be less than 15
minutes for a successful AD join. It is highly recommended to install a Network Time Protocol (NTP) service and to configure the Oracle ZFS Storage Appliance and the AD domain controllers to become clients of the service.
Steps:
References: http://www.oracle.com/technetwork/server-storage/sun-unifiedstorage/documentation/activedir-ldap-source-1124-2372474.pdf, page 6-7
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Question No : 7
What happens when the thin provisioning property is set for a LUN?
A. A share reserves exactly enough space to completely fill the share.
B. This property allows volume size to exceed the amount of available space.
C. Thin provisioning allows the storage administrator to divide the pool capacity into evenly sized LUNs.
D. A ZFS file system is created by setting quota and reservation to the same value.
Answer: B
Explanation:
Thin Provisioning controls whether space is reserved for the volume. This property is only valid for LUNs. By default, a LUN reserves exactly enough space to completely fill the volume. This ensures that clients will not get out-of-space errors at inopportune times. This property allows the volume size to exceed the amount of available space. When set, the LUN will consume only the space that has been written to the LUN.
References:
https://docs.oracle.com/cd/E37831_01/html/E52872/shares__shares__general__space_us age.html
Question No : 8
What is the interface of the ZFS Storage Appliance to access the Oracle Storage Cloud Service?
A. Snap Management tool
B. Upload CLI tool
C. Java Library
D. RESTful management API
Answer: D
Explanation:
Your applications can access Oracle Storage Cloud Service programmatically by using either an OpenStack Swift-compatible REST API or Java API.The Oracle ZFS Storage Appliance (ZFSSA) is a family of enterprise storage products that
provides efficient file and block data services over the network. The ZFSSA RESTful Application Programming Interface (API) can be used to manage the ZFS Storage Appliance. This documentation is organized using the same hierarchy as the Browser User Interface (BUI) and Command Line Interface (CLI).
Cloud environments typically use a RESTful architecture, which is based on a layered client-server model. This layered model allows services to be transparently redirected through standard hubs, routers, and other network systems without client configuration.
References:
https://www.cloudberrylab.com/solutions/oracle-cloud
https://docs.oracle.com/cd/E51475_01/html/E52433/makehtml-id-4.html#scrolltoc
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Question No : 9
Which option represents the steps to add L2ARC cache SSDs (Readzillas) to a storage pool by using the command-line interface (CLI)?
A. enter configuration storage, import cache to the pool, verify and done
B. enter configuration storage, add cache to the pool, verify and done
C. enter configuration storage, configure cache to the pool, verify and done
D. enter configuration storage, get cache to the pool, verify and done
Answer: B
Explanation:
Configuring Storage Using the CLI, Adding Cache Devices to an Existing Pool
References: Oracle ZFS Storage Appliance Administration Guide (June 2014), page 103
Question No : 10
Identify two classes of resources within the Oracle ZFS Appliance cluster.
A. Network
B. Storage
C. Cache
D. Memory
Answer: A,B
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