E20-326 Exam Questions

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

What is the effect of block size on response times in an SRDF/S environment?

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

An SRDF/S implementation is being designed. The application is doing 6,000 4 KB IOPS with 30% writes and uses multiple volumes. Assume that the RA performance limits are 3,800 4 KB...

You are designing an SRDF/S solution. Network bandwidth can be purchased in increments of single OC3 (155 Mb/s) links. Data compression is not in use. The workload profile is as fo...

What is the effect of block size on response times in an SRDF/S environment?

Your customer is adding a new database application. You are asked to design a solution to expand the current SRDF/S implementation on the customer's two Symmetrix VMAX arrays to ac...

A customer is using SRDF/S with one Symmetrix VMAX in each data center. An application is doing 10,000 4 KB IOPS with 40% writes and is using multiple volumes. Assume an RA port ca...

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

You have used BCSD to model an SRDF/S solution. What information can be obtained from the model?

An SRDF/S design analysis was performed with BCSD. The Volume Exception tab in BCSD has identified several volumes. What is a reason for this issue?

A proposed SRDF/S solution was modeled with BCS

What is a result of designing SRDF/A with inadequate bandwidth?

What is the main benefit of SRDF/A Delta Set Extension?

What are benefits of SRDF/A Multi-Session Consistency?

A customer is trying to perform an SRDF/A Consistent Mode Change. The change rejected repeatedly by the secondary array. What could cause this condition?

What is supported for the second leg (R21 to R2) of an SRDF Extended Distance Protection (EDP) configuration?

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

What is the Write Load Adjustment Factor recommended by Performance Engineering when modeling an SRDF/A solution with BCSD?

What determines the maximum cache requirements when modeling an SRDF/A Delta Set Extension configuration?

You need to model several SRDF/A workloads that require data consistency across all the sessions. How would you model the multiple SRDF/A sessions?

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX arrays over a FC SAN. Which VMAX FA port flag must...

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX arrays over a FC SAN. Which VMAX FA port flag is o...

You are designing a Symmetrix VMAX Virtual Provisioning solution for a VMware vSphere environment. Which format does EMC recommend when creating a virtual disk for a virtual machin...

You are designing a Symmetrix VMAX Virtual Provisioning solution for a VMware vSphere environment. Storage allocation must be guaranteed for some mission critical virtual machines....

A customer is implementing a Microsoft Exchange environment on a Symmetrix VMAX. The environment will be deployed on 600 GB FC 15K drives using RAID 1 data protection. The applicat...

A customer is implementing a Microsoft Exchange environment on a Symmetrix VMAX. The environment will be deployed on 600 GB FC 15K drives using RAID 5 data protection. The applicat...

Your customer is using Replication Manager to make local TimeFinder/Clone backups of their Microsoft Exchange 2010 environment. The customer reconfigured the Exchange environment t...

A customer recently reconfigured their Microsoft Exchange 2010 environment. They placed the log and system files on the L:\ drive and mounted the mailbox stores on L:\SG1DBMP. The...

A customer is planning a new Microsoft Exchange 2010 environment on their Symmetrix VMAX. The customer wants to know how they can backup volumes containing active mailbox databases...

A customer is planning a new Microsoft Exchange 2010 environment on their Symmetrix VMAX. The customer wants to know how they can backup volumes containing passive mailbox database...

You have been assigned to gather performance data for a Microsoft SQL server database that will be migrated to a Symmetrix VMAX. Which Perfmon counter must be measured prior to des...

Prior to creating the Symmetrix VMAX architecture for Microsoft SQL, you are given a Perfmon Log view containing data for the database LUN. The file contains read and write IOPS co...

A customer plans to deploy Oracle on their new Symmetrix VMAX. They are concerned about the performance of the redo log files. You recommend isolating these files to their own set...

A customer is planning an Oracle 11g implementation. You have been asked to design the Oracle storage architecture. You recommend placing redo log files on separate drives from oth...

A customer has implemented an Oracle application on a Symmetrix VMAX with a mix of Enterprise Flash Drives (EFD) and FC 15K drives. EFD are configured in RAID 5, and FC 15K drives...

Which database workload is suitable for an EFD configuration?

What is the most important advantage of implementing an ASM, Oracle 11g application on an existing Symmetrix array?

A customer plans to migrate existing AIX, HP-UX, and Windows hosts from a Symmetrix DMX-3 to a new VMAX array. You need performance data from the existing array to configure the la...

The SiRT feature is enabled on the RA in an SRDF/S configuration. When does the host receive the acknowledgement of a write?

A customer is planning a technology refresh. The proposed migration will make use of Open Replicator Hot Pull. Which Open Replicator Hot Pull feature allows them to minimize the po...

Refer to the exhibit. A customer has a Symmetrix VMAX storage array configured with FAST VP using three storage tiers. Policies are active for all storage groups on the array. The...

Refer to the exhibit. A customer has a Symmetrix VMAX storage array configured with FAST VP using three storage tiers. Policies are active for all storage groups on the array. The...

You have used BCSD to model an SRDF/A solution and have an SRDF/A risk analysis, as shown in the exhibit. What should be your recommendation? Exhibit:

Refer to the exhibit. You are considering potential configurations of a new storage system. You need to make decisions that consider different cost-benefit ratios. Which policy app...

A customer has a Symmetrix VMAX storage array configured with 99.9% utilization of raw storage capacity. The frame is configured with storage pools as shown in the exhibit. Note th...

Refer to the exhibit. You are considering potential configurations of a new storage system. You need to make decisions that consider different cost-benefit ratios. Which policy app...

A customer has a Symmetrix VMAX storage array configured with 94.9% utilization of raw storage capacity, according to symwin. The frame is configured as shown in the exhibit. The S...

You are assigned to design a storage solution for a customer's Oracle OLTP environment. The current configuration has performance issues. Users have complained about slow response....

Refer to the exhibit. A company plans to deploy a one-engine Symmetrix VMAX array in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX array over a FC...