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A PowerMax parent Storage Group (SG) contains two child SGs: SG1 and SG2. What is a valid Host I/O limit setting for this configuration?
A storage architect is looking for best practices to expand an existing single V-Brick VMAX All Flash 250. They are planning to expand the VMAX configuration to a dual V-Brick model for better performance.
What is a consideration?
SRDF/A has been enabled between two PowerMax arrays. An extended loss of all RDF links occurs.
What is the state of the RDF pair after link connectivity is restored?
A customer is planning an SRDF/S implementation. They are concerned about the performance of their application when the initial synchronization of the data occurs.
Which SRDF mode should be used during the initial synchronization period?
A customer is planning to implement SRDF/Metro, using the default Device Bias method. What is a consideration?
What happens to the space used for SnapVX delta tracks that are unique to a terminated snapshot?
A storage architect is evaluating the performance of a PowerMax array during business hours. They want to know how much extra load the PowerMax can handle without significant performance degradation. The Workload Planner is used to identify the hot spots during the recurring backup windows.
Between 9:30 PM and 1:30 AM and between 3:15 AM and 5:30 AM, backups are causing the PowerMax to exceed the best practice recommendation. The Recurring System Data Exclusion Periods chart is used to filter out these hot spots. After running this workload planning for a few weeks, they notice that the selection of records they previously made are showing different numbers than when they started viewing the report, several weeks ago.
What is the explanation for this behavior?
At a disaster planning meeting, an architect is presented with the following facts by a client:
A Unix host is replicating storage from a Production PowerMax to a VMAX 250FX.
RDF pairs have been split with Production and DR hosts accessing their respective storage.
Invalid tracks have started to build against PowerMax and VMAX 250FX.
The client now wants to bring production back to PowerMax, discarding the VMAX 250FX updates while keeping the updates on the PowerMax. What is the correct action to take?