E20-885 Online Practice Questions and Answers

A customer has two EMC VNX, one at the primary site and the other at a DR site located 100 km away. The WAN connection between sites is a 100 Mb/s dark fiber link with 4 ms latency.

A previous storage administrator configured the pool LUNs for the file system on thin LUNs. The file system is growing at a rate of 500 GB per week and is on a VDM. The new storage administrator reports performance issues with the file system. What is the most likely reason for the performance issue?

A. Thin LUNs are used for the file system.

B. The WAN link should be upgraded to an eLAN.

C. The VNX system requires an upgrade.

D. The file system has too many concurrent users connected.

A customer wants to reduce the performance impact incremental SAN Copy (ISC) has on their source LUN. They plan to use a clone between the current source and destination LUNs, and then use the fractured clone as the new ISC source LUN. The source LUN performs two hundred 4 KB random I/O per second, with a 1:1 read/write ratio.

The source LUN is 768 GB in size, and the clone will be fractured for five minutes. How much data will be copied to the destination LUN?

A. 11,250 MB

B. 22,500 MB

C. 1,125 MB

D. 4,800 MB

A customer configures replication between two data movers for their VDM environment. The primary data mover has one 1 Gb copper ethernet port and the destination Data Mover has one 10 Gb optical network port. The customer completes a failover test and then remote clients report they are unable to access data. The customer requests your assistance. What is the most likely cause of the issue observed during failover test?

A. The interface speeds do not match on both Data Movers

B. The interface on the Data Movers have a Duplex mismatch

C. The interface names do not match on both Data Movers

D. The interface medium do not match between Data Movers

You are planning an Exchange 2010 environment. The customer's environment has 500 users. On average, each each user sends 90 and receives 60 messages daily. The average message size is 150 KB with 30 MB of logs per user per day. The Exchange administrator wants to retain five days of transaction logs. What is the minimum total log volume space that should be planned for?

A. 125 GB

B. 90 GB

C. 225 GB

D. 175 GB

A customer wants to migrate a LUN from one EMC VNX to another. The customer wants to use the integrated LUN migration feature. Due to a change freeze, the customer can install additional software, but cannot add any additional hardware. What do you recommend?

A. Use SAN Copy, rather than LUN migration

B. Configure target LUNs 20% larger than source LUNS

C. Configure Thin source LUNs and Thick target LUNs

D. Use RecoverPoint, rather than LUN migration

An Oracle DBA creates a new database and requests a LUN to store the online redo logs. What is the recommended configuration for this LUN?

A. RAID 1/0 using SAS drives

B. RAID 5 using Flash drives

C. RAID 1/0 using Flash drives

D. RAID 5 using SAS drives

A customer has an EMC VNX configured as an FTP server. They want to determine how many FTP connections are currently open. What server_stat statistic type could be used to determine this information?

A. fact

B. set

C. counter

D. element

A customer is testing their new MirrorView/A configuration between two EMC VNX. What will be the state

of a newly created mirror after it is added to a previously synchronized Consistency Group?

A. Quasi-consistent

B. Out-of-sync

C. Synchronized

D. Consistent

A customer needs to deploy an EMC RecoverPoint/SE cluster.

What is the minimum required count of RecoverPoint Appliances (RPAs) per cluster?

A. 1

B. 2

C. 4

D. 8

You implement a CIFS DR solution for a customer using the One-to-Many replication topology. They ask you to explain replication behavior under the following conditions:

Production site failover or switchover to a DR site

Replication start and reverse is performed

What should you advise the customer?

A. The original production site goes into cascade mode to synchronize data for the remaining DR sites.

B. The original production site remains a One-to-Many replication source for the other DR sites.

C. All remaining replication sessions to the other DR sites are suspended.

D. The DR site becomes a replication source for the other DR sites; the original production site is marked as invalid.