EMC E20-845 Dumps
Exam: Business Continuity Expert for Implementation Engineers
EMC E20-845 Exam Tutorial
Question No : 1 - Topic 0
A Solaris host is being set up to use PowerPath. The installation guide refers to setting the
sd_max_throttle parameter to 20. What is this parameter?
A. SCSI queue depth for a path
B. SCSI queue depth for a device
C. Number of milliseconds to wait after a queue-full condition
D. Number of microseconds to wait after a queue-full condition
Question No : 2 - Topic 0
Click the Exhibit button.
A customer is planning to implement an online backup environment for SQL Server using
TSIM, as shown in the figure. The storage of both databases is on the same Symmetrix
How should these databases be backed up?
A. Use tsimsnap to simultaneously back up both databases
B. Use tsimsnap2 to simultaneously back up both databases
C. Manually capture the VDI and use tsimsnap to simultaneously back up both databases
D. Manually capture the VDI and use tsimsnap2 to simultaneously back up both databases
Question No : 3 - Topic 0
When creating a TimeFinder script for a W2K host that synchronizes a BCV pair, and the
same BCV device is accessible by another W2K host, which operation should the script
contain to avoid any Windows plug- and-play feature from corrupting the BCV?
A. SIU to lock the device
B. SIU to flush file system buffers
C. SIU to unmount the device on the secondary host
D. Check the BCV pair state and perform a full establish
Question No : 4 - Topic 0
You are planning a new replication of an online transaction processing (OLTP) Oracle
database to a remote Symmetrix. The requirements for the task are:
1. The distance between the local and remote sites is 1600 km
2. The local database must remain online
3. The customer requires only a restartable copy of the database on the target site
4. The task should have a minimum performance impact to the local database
Choose the best set of EMC technologies for the implementation.
A. R2, RBCV, Instant Split Technology, and SRDF/DM
B. R1/BCV, R2, Instant Split Technology, and SRDF/S
C. R2, RBCV, Consistent Split Technology, and SRDF/S
D. SRDF/A or SRDF/AR single hop
Question No : 5 - Topic 0
A major financial organization has an SRDF/AR multi-hop configuration. The data
replication cycle happens four times per day. When trying to use the BCVs on the source
Symmetrix for reporting, a device lock error occurs. What causes the error?
A. You can only use the remote BCV when symreplicate is active.
B. The BCVs cannot be accessed unless a symmir -skip command is issued
C. symreplicate puts a lock on the devices participating in the replication cycle
D. The BCVs cannot be accessed unless a symdev release command is issued
Question No : 6 - Topic 0
A client is performing a split operation for a BCV pair. The split is taking several minutes to
complete. How can the overall split time (foreground and background) be reduced while
using a mirrored BCV?
A. Split the BCV with the -protbcvest option
B. Split the BCV with the onsistent option
C. Synchronize the BCV with the -protbcvest option
D. Synchronize the BCV with the onsistent option
Question No : 7 - Topic 0
A customer is utilizing TimeFinder/Mirror to split BCVs from a production application and
utilizing TimeFinder/Snap for creating test and development copies using Snaps. Which
step needs to be taken to refresh the BCVs from a current copy of production?
A. Symmir establish, symsnap activate
B. Symsnap terminate, symmir establish
C. Symsnap terminate, symsnap activate
D. Symmir establish, symsnap reactivate
Question No : 8 - Topic 0
A customer is running an Oracle cold backup using TimeFinder BCVs. After a database
corruption, even though data was restored from the last BCV split, the customer
experienced a problem when trying to start the database. The customer received the error
message "control files wrong version.? What is the most-likely cause of the error?
A. Control files were not included on the BCV
B. Control files and redologs were not included on the BCV
C. The customer did not use Instant Split for the control files
D. The customer did not use Consistent Split for the control files
Question No : 9 - Topic 0
A customer has had security issues in the past. To resolve them, firewalls were set up
between network segments within and external to his data center environment. You are
configuring the communication between the Replication Manager server and the
administration console(s). Which port must be allowed to pass through the firewalls to
Question No : 10 - Topic 0
Click the Exhibit button.
A customer has an Oracle application running on a DMX. The customer also has a remote
disaster restart with another DMX, and is replicating application data using SRDF/AR in
single-hop mode as shown in the figure.
What needs to be included in the symreplicate command options to get a copy of the data
to roll the logs forward?
A. Precycle for putting the database in hot backup mode
B. Preaction for putting the database in hot backup mode
C. Postaction for putting the database in hot backup mode
D. Postaction for putting the database in online backup mode
Question No : 11 - Topic 0
A customer using AIX Logical Volume Manager needs to split BCVs and import the volume
group on the same host as the standard volume group. The attempt to do this failed. Which
command should the customer run to import the disk group?
Question No : 12 - Topic 0
You are validating a remote replica configuration where a RAID-1 protected R1 device
needs to be replicated remotely to a RAID-1 protected R2 device. The source R1 device
already is a part of a TimeFinder concurrent BCV configuration. What should you consider
to validate the configuration?
A. The number of I/Os between R1 and BCVs
B. Whether the R2 device is being remotely replicated to a RBCV
C. The number of mirror positions available to the RDF target device
D. The number of mirror positions available to the RDF source device
Question No : 13 - Topic 0
Click the Exhibit button.
A customer has two sites with a DMX in each of them. At one site, there is an accounting
application running with SQL Server, The customer wants to migrate this application to the
second site. The configuration is shown in the figure. The customer wants to move the data
using Dynamic SRDF.
What needs to be done to prepare the environment for the migration?
A. Prepare a bin file for both DMXs to enable dynamic SRDF
B. Enable dynamic RDF feature on both DMX with the symrdf command
C. Enable dynamic RDF feature on both DMX with the symconfigure command
D. Enable RDF feature on the source DMX with the symconfigure solutions enabler command
Question No : 14 - Topic 0
A customer is implementing a custom-scripted SRDF/AR single-hop solution from a
primary site to a disaster recovery site 1000km away. The customer wants to do perform
failover and failback testing to prove that SRDF works and that the hosts are recoverable at
the target location. The customer wants to run production on the R2 side for 48 hours and
then failback with minimal downtime.
What needs to be done to prove to the customer that after a symrdf failback has been
performed, the record counts that support the application are correct?
A. Perform a symmir query
B. Execute a compete restore from the r2 to the r1
C. Run a select count on a number of tables and views
D. Invoke an srdf suspend and check the database file sizes
Question No : 15 - Topic 0
Click the Exhibit button.
You have designed an SRDF/AR, multi-hop solution for your customer. The customer has
decided to script the replication and run the commands against a Symmetrix device group
A. symmir -g dg_name split -rdf
B. symmir -g dg_name split -rbcv
C. symmir -g dg_name split -rbcv -remote
D. symmir -g dg_name split -rdf -bcv -remote
Question No : 16 - Topic 0
A customer forced a termination of a Snap session that has a current status of estInProg.
What is the effect of this action?
A. Invalidates all tracks of the target devices
B. Causes data loss on both source and Snap devices
C. Terminates the restore and restarts the restore session
D. Reverts the source volumes to their previous state and cancels the restore
Question No : 17 - Topic 0
A customer plans to perform an SRDF restore. The R2 volumes contain a restartable copy
of an Oracle database. The SRDF link is running in synchronous mode, and the number of
invalid tracks between R1 and R2 volumes is 87400. When can the customer start up the
database on the R1 site?
A. After there are fewer than 1024 invalid tracks
B. After there are fewer than 4096 invalid tracks
C. Immediately after the R1 and R2 are synchronized
D. Immediately after issuing the symrdf restore command
Question No : 18 - Topic 0
A customer is using a RAID-1 standard device that already has a paired BCV and one
CopyOnAccess Clone copy. What is the maximum number of additional CopyOnWrite
Snap sessions that the customer can create on this device?
Question No : 19 - Topic 0
A customer needs to migrate its Oracle database on DMX via SRDF to a remote site
several thousand kilometers away. To avoid I/O impact on host performance,
synchronization is achieved with an SRDF Adaptive Copy configuration.
Which process should you follow to guarantee consistency after the R1-R2 swap?
A. Wait for devices to reach the synchronized state and split the link using the "-consistent" switch.
B. Wait for devices to reach the synchronized state, set the RDF mode to update until zero; then, using a hot-split of the Oracle database, failover operations.
C. After an appropriate number of invalids has been reached, set the RDF mode to synchronous; then, using a hot-backup of the Oracle database, failover operations.
D. After an appropriate number of invalids has been reached, set the RDF mode to update until zero; then, using a hot-backup of the Oracle database, failover operations.
Question No : 20 - Topic 0
You need to configure the volume layout for Oracle on a Linux server that will reside on the
Symmetrix DMX. You also need to minimize performance issues resulting from partition
misalignment on the physical disks. Which tool is used to align the disk partition?