E20-326 Exam Questions

A Symmetrix VMAX has been configured with Dynamic Cache Partitions. What is a criterion that must be met for a cache slot to be eligible for donation?

A Symmetrix VMAX hosts four applications. Each application is assigned a named dynamic cache partition. Two of the partitions are static and two are flexible. The write pending lim...

A customer is using virtual provisioning on a Symmetrix VMAX which is being shared for Production and non-production workloads. What can be used to separate the different workloads...

You are designing a new VMAX implementation. All applications will share physical drives and participate in SRDF/S replication. The customer has two high I/O applications used for...

Which condition results in effective prioritization by Symmetrix Priority Controls (SPC)?

A storage administrator receives a warning message that one of the thin pools in the Symmetrix is low on storage space. The pool contains a large number of thin devices that have b...

What can happen if an over-subscribed thin pool becomes full?

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

What is the size of a thin device extent in a Symmetrix VMAX?

What are the main components that make up a virtual provisioning environment?

What is one of the benefits of virtual provisioning?

What is considered to be a thin unfriendly environment?

A customer wants to implement virtual provisioning on a new VMAX array and is concerned about efficient use of available storage and application performance. The VMAX environment w...

An SRDF/S customer has implemented FAST VP at R1 and R2 sites. What will happen to a thin R2 device when a thin R1 device extent is promoted?

A Symmetrix VMAX is configured with FAST DP. It contains three tiers of storage: 1. 200 GB RAID 5 (3+1) EFD 2. 300 GB RAID 1 15K RPM Fibre Channel 3. 1 TB RAID 6 (6+2) 7200 RPM SAT...

What is a valid FAST policy?

You are designing tiered storage for a new 2-engine VMAX. What is the minimum number of Flash drives you should recommend not including hot spares?

Which FAST VP control parameter defines the amount of time FAST VP should wait after a thin device is brought under FAST VP control before performing a data movement?

Which FAST VP control parameter specifies the maximum amount of time over which long term activity rates will decay?

What is best practice for binding thin devices in a FAST VP environment?

Refer to the exhibit. What is a characteristic of the proposed configuration recommended by TierAdvisor?

Refer to the exhibit. What is a characteristic of the proposed configuration recommended by TierAdvisor?

By default which discounted rate does Tier Advisor apply to software using SATA storage?

Refer to the Exhibit. The illustration shows the workload characteristics of a DMX which is due to be upgraded to a VMAX. Which conclusion can you draw?

What is the minimum recommended amount of CLARiiON performance data that should be used for Tier Advisor analysis?

What is the functional description for Tier Advisor?

You are analyzing performance data from a Symmetrix DMX populated with Fibre Channel (FC) drives with the intention of upgrading a customer to a VMAX. An analysis of the data with...

Refer to the exhibit. What would you see if you place your cursor on the bottom left of the vertical axis (red section) of the graph in Tier Advisor?

Refer to the exhibit. What would you see if you place your cursor on the bottom left of the horizontal axis (green section) of the graph in Tier Advisor?

What are the generally recommended RAID protections for Enterprise Flash Drives (EFD), Fibre Channel (FC) and Serial Advanced Technology Attachment (SATA) tiers?

A customer wants to protect production data using local and remote replication on a pair of VMAX arrays located 100 km apart. Both VMAX arrays are fully configured with virtually p...

A customer wants to protect production data using local and remote replication on a pair of VMAX arrays located 500 km apart. Both VMAX arrays are fully configured with virtually p...

Your customer is interested in using Timefinder/Snap. You have determined there needs to be fifty save devices to handle the change rate for 125 virtual devices. The Save devices a...

When using Timefinder/SNAP, what is true of Save devices?

Changes were made to a TimeFinder Clone after activation. The changes need to be propagated back to the source. Which method should be used?

A customer has taken four snaps of a TimeFinder/Snap source device at 10:00 a.m., 1:00 p.m., 3:00

When terminating a TimeFinder/Snap session, what is the effect on the ability to access the data on the VDEV?

What describes the difference between Asynchronous and Synchronous Copy on First Write (COFW)?

An existing TimeFinder customer migrated from a DMX-3 running Enginuity 5771 to a new VMAX array. They ask you to explain how the TimeFinder/Clone Copy on First Write (COFW) mechan...

An existing TimeFinder customer migrated from a DMX-3 running Enginuity 5771 to a new VMAX array. A colleague advised them TimeFinder/Clone performance would improve on the VMAX du...

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/Clon...

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/Clon...

When does the ACOFW behavior apply in a TimeFinder/Snap environment?

What is the maximum data change rate for which you would recommend TimeFinder/Snap over TimeFinder/Clone as a local replication solution?

How is Open Replicator licensed?

What are risk factors you should consider when designing an Open Replicator solution?

A Customer would like to use Open Replicator to periodically push their production data to a remote array. Which solution will minimize performance impact to the production devices...

A customer is migrating from a DMX to a VMAX. To minimize the outage window Open Replicator hot pull has been selected to perform the migration. Which Open Replicator license is re...

A customer has purchased a new VMAX and is in the process of setting up Open Replicator for a migration. What is a consideration for device pairing for the migration?

A Symmetrix Customer has an application that runs 24 hours a day, 7 days a week and 365 days a year. They would like to replicate the application data simultaneously to four branch...