Free EMC D-PVM-OE-01 Practice Exam with Questions & Answers | Set: 3

Host I/O Limits in PowerMax allow you to control the maximum IOPS (Input/Output Operations Per Second) or bandwidth that a storage group can consume. This helps prevent performance issues caused by one application or workload monopolizing resources.

When you associate Host I/O Limits with a Storage Group, the default Dynamic I/O distribution mode is set toNever.

Never:This means that the I/O limits are statically distributed across the directors in the associated masking view. If a director fails, its allocated portion of the I/O limit is lost. This is the most conservative setting, as it ensures that the I/O limits are strictly enforced even in the event of a director failure.

You can change this setting toBalancedorAlwaysif you need more dynamic distribution of I/O limits.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell PowerMax and VMware vSphere Configuration Guide:This guide provides detailed information about Host I/O Limits, including the different distribution modes and their benefits. You can find this document on the Dell Support website by searching for "PowerMax and VMware vSphere Configuration Guide."

Dell Solutions Enabler 10.0.0 CLI User Guide:This guide provides information on how to set Host I/O Limits using SYMCLI commands, including the -dynamic option for specifying the distribution mode.

Step by Step Comprehensive Detailed Explanation:

In an SRDF (Symmetrix Remote Data Facility) disaster recovery scenario where production has been switched to the R2 devices at the target site, theResumeoperation allows the primary hosts to regain access to the R1 devices without waiting for a full data transfer from the R2 devices.

Here's how it works:

R1 Access:The Resume operation makes the R1 devices (at the primary site) accessible to the primary hosts.

Background Synchronization:While the hosts access and modify data on the R1 devices, SRDF continues to synchronize the changes from the R2 devices (at the target site) in the background. This ensures that the R1 devices are gradually updated with any changes that occurred on the R2 devices during the failover.

This approach minimizes downtime and allows for a quicker return to the primary site without waiting for a lengthy synchronization process to complete before granting host access.

Why other options are incorrect:

A. Update:This operation copies changes from R2 to R1, but it doesn't necessarily grant immediate host access to R1.

B. Fallback:This is a more comprehensive process that involves reversing replication direction and fully restoring the primary site as the production environment.

C. Failover:This operation switches production to the R2 devices, not the R1 devices.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 SRDF Family CLI User Guide:This guide provides detailed information about SRDF commands and operations, including the symrdf resume command. You can find this document on the Dell Support website by searching for "Solutions Enabler SRDF Family CLI User Guide."

Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a comprehensive overview of SRDF and its functionalities, including disaster recovery scenarios and the use of the "Resume" operation.

1.view old HBA WWN

2.swap out the old HBA

3.Discover the WWN

4.Use the replace action

5.Use the rename action

We need to terminate a clone session for the storage group named "DATA" in the Unisphere for PowerMax simulator.

Here's a step-by-step guide on how to do this, based on typical Unisphere functionality and the context of the question:

Steps:

1. Launch the Simulator and Navigate to the TimeFinder/Clone Section

Open Unisphere for PowerMax in your web browser.

Log in to the simulator (you should already be logged in with the array SID 1762 selected, based on the provided image).

In the left-hand navigation pane, locate the section related to TimeFinder operations. This is usually found under:

Data Protection

Local Protection

TimeFinder

Expand the relevant sections and click onTimeFinder SnapVXorTimeFinder Clone(the exact wording might vary slightly in the simulator). The goal is to get to the view where you can manage clone sessions.

2. Locate the Clone Session for the "DATA" Storage Group

The TimeFinder/Clone view will display a list of existing clone sessions.

You need to find the session associated with the "DATA" storage group. Look for the following:

Storage Group Name:The "DATA" storage group should be listed as the source of the clone session.

Session Type/Mode:Verify that it's a Clone session (not a SnapVX snapshot or another type of session).

3. Select the Clone Session

Once you've found the correct clone session for the "DATA" storage group, select it.

You can usually do this by:

Clicking a checkbox next to the session.

Clicking on the session itself (if the interface allows it).

4. Terminate the Clone Session

After selecting the clone session, look for an action button or menu option to terminate it. This might be labeled:

"Terminate"

"Delete"

"Remove"

"Fracture"(in some older versions)

"Stop"

Click the appropriate button to initiate the termination process.

Confirmation:You will likely be prompted with a confirmation message to ensure you want to terminate the selected clone session. Verify that you have selected the correct session (the one for the "DATA" storage group) and confirm the termination.

Step by Step Comprehensive Detailed Explanation:

The "Data Protection" menu in Unisphere for PowerMax provides a centralized location for managing various data protection features and functionalities. Specifically, it allows storage administrators to:

Configure and manage SRDF groups:SRDF (Symmetrix Remote Data Facility) is a key technology for disaster recovery and data replication in PowerMax. The Data Protection menu enablesadministrators to create, modify, and monitor SRDF groups, establish replication relationships between devices, and control replication settings.  

Why other options are incorrect:

A. Convert front-end ports to SRDF ports:This is typically done through the "System > Hardware" or "Connectivity" sections of Unisphere, where port configurations are managed.

C. Configure Data Protection for z Systems:While PowerMax supports mainframe environments, the specific configuration for z Systems might involve specialized tools or interfaces.

D. Review the audit log for unwanted logins:Audit logs and security-related events are usually found in the "Monitoring" or "Security" sections of Unisphere.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Unisphere for PowerMax 10.0.0 Online Help:The online help for Unisphere provides a detailed explanation of the functionalities available in each menu, including the Data Protection menu. You can access this help within Unisphere itself or on the Dell Support website.

Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a general overview of data protection features in PowerMax and how they are managed through Unisphere.