1z0-499 Oracle ZFS Storage Appliance 2017 Implementation Essentials Questions and Answers

Scheduling Snapshots. Automatic snapshots can be taken half-hourly, hourly, daily, weekly, or monthly and are named. Automatic snapshots can be set on a project or a share, but not both. Otherwise, overlapping schedules and retention policies would make it impossible to guarantee both schedules.

References: https://docs.oracle.com/cd/E78901_01/html/E78912/gprhe.html

Quantized Heat Map: to identify single or multiple devices at 100% utilization, minimum and maximum device utilization, and device utilization balance, all over time (performance analysis).

Figure: Clustered ZS5-4 controllers with two HBAs connected to multiple DE2-24 disk shelves in four chains

References: https://docs.oracle.com/cd/E78901_01/html/E78911/gquae.html

In, the process of joining the domain, as well as user authentication, may fail if there is greater than a five-minute time difference between the domain controller and the Oracle ZFS Storage Appliance.

References: http://www.oracle.com/technetwork/server-storage/sun-unified-storage/documentation/mswindows-integration-063012-1690774.pdf , page 11

Status Dashboard Settings

The Status > Settings screen enables you to customize the Status Dashboard, including the statistics that appear and thresholds that indicate activity through the weather icons.

Use the layout tab to select the graphs that appear in the dashboard activity area, as defined in the following table.

References: https://docs.oracle.com/cd/E71909_01/html/E71919/goosp.html

Locking Cluster Management Interfaces (BUI)

After initial configuration, clustered controllers are in an active-active state. When a failover occurs, an active controller takes over all non-private interfaces, and the peer controller becomes passive and inaccessible by its BUI and CLI. To maintain access to a controller regardless of its state, lock its management interface to make it private. The following procedure locks the management interface on each clustered controller.

• In the BUI of the first controller, navigate to Configuration > Cluster.
• In the BUI of the second controller, navigate to Configuration > Cluster.
• From the BUI of the first controller, choose the management interface for the first controller from the Resource list.
• Click the padlock icon image:unlock icon to lock the management interface to this controller.
• The interface displays a locked icon image:locked icon next to its name in the Resource list.
• From the BUI of the second controller, choose the management interface for the second controller from the Resource list.
• Click the padlock icon image:unlock icon to lock the management interface to this controller.
• The interface displays a locked icon image:locked icon next to its name in the Resource list.

References: https://docs.oracle.com/cd/E76475_01/html/E76483/gpkay.html

Triple mirrored

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.

References: https://docs.oracle.com/cd/E51475_01/html/E52872/goden.html