[Free] 2018(Jan) Latesttests Passguide Oracle 1z0-414 Dumps with VCE and PDF 11-20

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Oracle ZFS Storage ZS3 Implementation Essentials

Question No: 11

An administrator wants to add an advanced statistic to a work sheet. How will the administrator make the statistic available?

  1. No action is required. Advanced Statistics are enabled by default.

  2. Under Configuration gt; Dashboard gt; Preferences, select quot;Make available advanced analytics statisticsquot; and click Apply.

  3. Under Status gt; Dashboard gt; Preferences, select quot;Make available advanced analytics statisticsquot; and click Apply.

  4. Under Configuration gt; Preferences, select quot;Make available advanced analytics statisticsquot; and click Apply.

Answer: A

Explanation: By default, the Statistics available under Analystics are basic and useful to most storage administrators.

Reference:http://www.bergendorf.net/files/7xxx-LAB_v07_p03.pdf

Question No: 12

Identify the proper procedure to power up the ZFS Storage Appliance.

  1. Connect cords to power supply 1 and power supply 2, and open a telnet session.

  2. Connect cords to power supply 0 and power supply 1, and wait for 2 minutes.

  3. Connect cords to power supply 0 and power supply 1, and open a telnet session.

  4. Connect cords to power supply 1 and power supply 2, and wait for 2 minutes.

Answer: B

Question No: 13

Which three statements are true about Cluster Configuration of ZFS Storage Appliances?

  1. In Cluster environment, only one node at a time can be the owner of each storage pool.

  2. To utilize resource of both nodes simultaneously, you need at least two storage pools: one that maps to node1 and another that maps to node2.

  3. Read SSD is in head node, so cached data will not fail over to another node. Warm-up time is required after failover in order to cache the data again.

  4. In Cluster environment, only one controller can be assigned resources.

Answer: A,B,D

Question No: 14

Which ZFS component improves ZFS throughput and response time for stable write processing (e.g.O_SYNC)?

  1. VDEV

  2. ZIO

  3. ARC

  4. DMU

  5. ZIL

Answer: A

Question No: 15

What happens when the Thin Provisioning property is set for a LUN?

  1. This property allows the volume size to exceed the amount of available space.

  2. A share reserves exactly enough space to completely fill the share.

  3. Thin provisioning allows the storage administrator to divide the pool capacity into evenly sized LUNs.

  4. A ZFS file system is created by setting a quota and reservation to the same value.

Answer: A Explanation:

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. While this allows for thin provisioning of LUNs, most filesystems do not expect to get quot;out of spacequot; from underlying devices, and if the share runs out of space, it may cause instability and/or data corruption on clients.

Reference:http://docs.oracle.com/cd/E22471_01/html/820-

4167/shares shares general.html#shares shares general thin_provisioned

Question No: 16

Identify three common practices for implementing an Oracle Database.

  1. Aggregate online redo log files, control files, and production data files within a single share.

  2. Segregate different databases to different projects.

  3. Configure write-optimized SSD-based log devices.

  4. Fine-tune share settings for recordsize, compression, checksumming, and security based on the requirements for the database.

  5. Configure read-optimized SSD-based log devices.

  6. Create a dedicated project for all databases.

Answer: A,B,D

Explanation: 鈥?Segregate different databases to different projects

  • Store all databases files for a specific database in the same project

  • Segregate online redo log files and control files, production data files, temporary files, and recovery files to separate shares within the same project 35 Configuring Sun Storage 7000 Systems for Oracle Databases Sun Microsystems, Inc.

  • Segregate production data files to separate shares within the same project if the data files are subject to significantly different workloads or requirements

  • Fine-tune share settings for recordsize, compression, checksumming, and security based on the requirements for the share

Reference:

http://www.arrowecs.co.uk/dns_cms/uploadedfiles/dns/Storage_Solutions/SUN/Open_Stor age/Open Storage and Oracle Blueprint.pdf

Question No: 17

Which three are good reasons to have multiple pools configured?

  1. There is a need to have different RAID levels.

  2. There are multiple workload types sharing the same ZFS Storage Appliance.

  3. It allows SSDs to be shared across pools.

  4. There is a need to separate different storage environments from each other (that is, production, development).

  5. There is a need to have multiple pools of the same Raid level.

Answer: B,D,E

Question No: 18

Which devices can be tuned using the synchronous write bias property by selecting values of either latency or throughput?

  1. Quantum devices

  2. Log devices

  3. Block devices

  4. Cache devices

Answer: B

Explanation: A setting of Synchronous write bias : Throughput for a dataset allows

synchronous writes to files inother datasets to have lower latency access to SSD log devices.

Reference:https://blogs.oracle.com/roch/entry/synchronous_write_bias_property

Question No: 19

Which is the most effective metric for identifying performance issues?

  1. Latency

  2. IOPS

  3. Throughput

  4. Percent utilization

  5. Capacity

Answer: A

Explanation: For identifying performance issues, latency is essential. Paraphrasing performance expert Greg Brendan, latency is time spent waiting, and it has a direct impact on performance when caused by a synchronous process within an application request, thus making interpretation straightforward – the higher the latency, the worse the performance. This is in contrast to other metrics used in performance analysis – utilization, IOPS (I/O per second) and throughput – which are better suited for capacity planning and understanding the nature of workloads.

Reference:https://www.loggly.com/blog/average-poor-metric-measuring-application- performance/

Question No: 20

A storage administrator is configuring the ZFS Storage Appliance for applications with large block random read and write I/O and mixed block size of sequential read and write I/O.

What should be the optimal record size?

  1. 8 KB

  2. 64 KB

  3. 128 KB

  4. 256 KB

  5. 512 KB

Answer: A

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