E20-326 Exam Questions

Which operations are allowed by Open Replicator/LM?

Which operations are allowed by Open Replicator/DM?

Which information is needed when designing an Open Replicator solution?

Using Open replicator, when are the protection bitmap flags set to "1" for each track on the control device?

A customer wants to migrate a database using Open Replicator. They have decided to do a hot pull operation to minimize the outage window. What should the customer do to prevent dat...

Using Open replicator, when are the protection bitmap flags set to "0" on the control device?

A customer needs to have copies of their production database accessible to their test and development team. The production data resides on a VMAX and test and development resides o...

A customer needs to have copies of their production database accessible to backup and recovery team. The production data resides on a VMAX and backup and recovery resides on a CLAR...

Where is the pace set when using Open Replicator?

How many additional SDDF sessions are used for an Open Replicator incremental push?

You are designing an SRDF/S over Fibre Channel solution. Data centers are 50 kilometers apart. 4 Gb/s FC links are in place. How many buffer to buffer credits would you recommend i...

You are designing an SRDF/S over Fibre Channel solution. Data centers are 30 kilometers apart. 2 Gb/s FC links are in place. How many buffer to buffer credits would you recommend i...

What is the EMC recommended network quality for SRDF/A over GigE?

What is the EMC recommended network quality for SRDF/S over GigE?

How many buffer to buffer credits does a Symmetrix VMAX SRDF Fibre Channel port have?

For which IO sizes is the SiRT feature enabled on Symmetrix VMAX arrays?

For which Symmetrix VMAX SRDF mode(s) is the SiRT feature used?

You are designing an SRDF over GigE solution. What is a consideration to maximize TCP connection scaling?

What is the maximum number of wavelengths that can be multiplexed on a single optical fiber over DWDM?

What is the size of a fibre channel frame?

What is the maximum number of wavelengths that can be multiplexed on a single optical fiber over CWDM?

A customer needs to configure SRDF/S between two sites 10 km apart. The customer connected the R1 ports to fabric-A at site 1 and the R2 ports to fabric-B at site 2. The customer d...

You are designing a Symmetrix VMAX SRDF/S over Fibre Channel solution. The production and remote data centers are 50 kilometers apart. What is the expected write response time dela...

You are designing a Symmetrix VMAX SRDF/S over GigE solution. The production and remote data centers are 100 kilometers apart. What is the expected write response time delay due to...

You are designing an SRDF/S solution. The workload profile is: - Total I/Os per second = 10000 - Write % = 25 - Read block size = 8 KB - Write block size = 8 KB Network bandwidth c...

A customer is using SRDF/S to replicate a Symmetrix VMAX at the production site to the VMAX at the DR site. The sites are connected using a dedicated T1 link and are 38 km apart. W...

You are designing an SRDF/S solution. The workload profile is: - Total I/Os per second = 30000 - Write % = 20 - Read block size = 4 KB - Write block size = 4 KB Network bandwidth c...

When should customers implement SRDF/S solutions?

Which factors contribute to response time elongation in an SRDF/S environment?

Using SRDF/S, In Enginuity 5772 and later, How many concurrent writes can a device receive?

In Enginuity 5671 and earlier, how does SDRF/S behave when multiple writes to a device are received?

An SRDF/S implementation is being designed. The RA performance limits are 3800 4k IOPS for a Fibre RF adapter. The application is doing 6000 4k IOPS with 30% writes and uses multip...

What is the impact on response time when multiple concurrent writes to an RDF device arrive from different FA ports on a Symmetrix VMAX?

A customer is implementing SRDF/S for an application that generates 16000 8K IOPS with 30% writes. A single RDF port can service 1200 8K IOPS. How many RA should be recommended?

A proposed SRDF/S solution was modeled with BCSD. The model assumed that the Source array had 2 RFs. The RA utilization chart shows the maximum utilization at 80%. How many RFs sho...

A proposed SRDF/S solution was modeled with BCSD. The model assumed that the Source array had 4 GigE ports. The RA utilization chart shows the maximum utilization at 70%. How many...

A proposed SRDF/S solution was modeled with BCSD using host-based data. ?The BCSD model assumed two engine VMAX arrays with SRDF Fibre ports. ?The RA Utilization chart shows a maxi...

A proposed SRDF/S solution was modeled with BCSD using host-based data. ?The BCSD model assumed two engine VMAX arrays with SRDF Fibre ports. ?The Compressed Throughput chart shows...

A colleague implemented cascaded SRDF for a VMAX technology refresh and site relocation activity. The colleague reports they shutdown the hosts at production Site A and copied all...

Refer to the exhibit. A customer has a legacy DMX-3 at Site 1, where a BCV-R1 copy is taken of the production volumes and then replicated to another DMX-3 at Site 2 via SRDF/A . Th...

What is a feature of Delta Set Extension pools?

Using the default the 5875 SRDF/A cycle time, what is the recovery point objective in seconds?

When performing a consistent mode change from SRDF/A to SRDF/S, how many cycles does this process take?

An SRDF configuration is running in SRDF/A mode. The customer's decision to switch from SRDF/A to SRDF/S is rejected. At which percentage of write cache in use at the SRDF R2 site...

When designing SRDF/A, what is the recommended configuration for the DSE pool?

What is a supported mode for disk based Cascaded SRDF?

A Symmetrix VMAX SRDF/A customer is planning to implement DSE. What are the recommended DA and RA utilization levels before implementing DSE?

A customer is facing intermittent outages on their SRDF/A link. Typically, an outage does not last for more than 5 minutes. The storage administrator is planning to configure trans...

Which SRDF/A feature is recommended for improving resiliency from link outages?

You have been working with a customer on a new SRDF/A design and need to validate the configuration using host data. Which tool do you use?