E20-326 Online Practice Questions and Answers

You are designing a new disaster recovery solution with VMAX arrays. During the initial project kick-off meeting, the customer reports their environment can tolerate five minutes or less of data recovery following a disaster but have not yet determined the maximum allowable downtime for their applications.

The customer asks which remote replication methods you recommend for their environment. What do you recommend?

A. Defer making a recommendation until the application RTO is known.

B. Recommend the disaster recovery solution as described in the Sales Order.

C. Defer making a recommendation until the application RPO in known.

D. Recommend the disaster recovery solution described in the Statement of Work.

Prior to starting an implementation, which tool should be used to automate the data collection on a UNIX host?

A. EMCGrab

B. EMCReports

C. E-Lab Advisor

D. Change Tracker

A customer has a pair of VMAX arrays configured to replicate thin devices at one site to thin devices at another site using SRDF/A. The customer wants to implement TimeFinder/Clone replication of the R1 device on the source array and asks you to confirm this is a supported configuration. What do you advise the customer?

A. Yes, it is supported.

B. It is supported only if the precopy option is used.

C. No, it is not supported.

D. It is supported only if composite groups are used.

Which information is needed when designing an Open Replicator solution?

A. Remote array serial number and devices, control and remote front end ports.

B. Remote array serial number, Open Replicator control host, SRDF device pairing file.

C. TDATs to replicate, remote array serial number, Tier Advisor.

D. SYMMERGE, TDATs to replicate, Open Replicator software.

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 delay due to latency?

A. 0.5 ms

B. 0.25 ms

C. 1 ms

D. 2 ms

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. What will significantly improve the link service time between the 2 sites?

A. Upgrade to a faster link.

B. Decrease the number of RA ports.

C. Adding cache to both VMAX arrays.

D. Increase the priority of the high I/O applications on RA ports.

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?

A. BCSD

B. SymmMerge

C. E-lab Advisor

D. Tier Advisor

What can be used to monitor free space in a thin pool on a Symmetrix VMAX?

A. Event daemon storevntd

B. EMC ControlCenter Host Agent

C. Replication Manager IRCCD daemon

D. Tier Advisor

What is a Capacity Available for Active Replication (CAAR) consideration when using TimeFinder on a Symmetrix VMAX?

A. TimeFinder VP Snap requires 2X protection slots for source and 1X protection slots for up to 16 targets

B. TimeFinder/Snap requires protection slots for both source and target

C. TimeFinder/Snap source requires 2X the protection slots of the target

D. TimeFinder VP Snap requires 2X protection slots for both source and target for up to 32 targets

A TimeFinder/Clone session is created using the Copy option. When will data be copied?

A. As soon as the session is activated

B. On a write to a protected track on the source

C. On every write to a track on the source

D. As soon as the session state reaches Copy in Progress

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

A. Transmit Idle time for the peak workload

B. Peak Cycle time for the peak workload

C. Sum of the data changed for N and N+1 cycles without modification

D. Sum of the data changed for N and N+1 cycles, modified by the Write Load Adjustment factor

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 application generates 2000 I/ O per second with an I/O pattern that is 75% reads and 25% writes. What is the minimum number of drives recommended to support the application?

B. 18

C. 24

D. 32

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 collected over the past week, at 3-minute intervals.

Which method should be used to determine the correct IOPS target for calculating the appropriate number of RAID corrected spindles?

A. 90th percentile

B. 75th percentile

C. Overall Peak

D. Overall Average

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 array has been in service for over 30 days. When using Unisphere for VMAX to check, the customer notices no active ingress and egress of extents for the EFD tier. The current configuration of FAST is shown in the exhibit.

Which parameter should be changed?

A. FAST VP Data Movement Mode

B. Data Movement Mode

C. Workload Analysis Period

D. Min Initial Workload Period

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 applied to the workload provides the best response time for the minimum expenditure?

A. Moderate Skew

B. Heavy Skew

C. Low Skew

D. Default Skew