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Total 66 questions
Which protocols are supported with Dell EMC Data Domain Extended Retention?
Answer : A
Explanation:
DD Extended Retention-enabled DD systems support the protocols NFS, CIFS, and DD Boost. Support for DD VTL was added in DD OS 5.2, and support for
NDMP was added in DD OS 5.3.
References:
Dell EMC Data Domain Operating System Version 6.1, Administration Guide, page 468
A company implements Many-to-One replication between Dell EMC Data Domain systems. Which types of replication are supported by this topology?
Answer : D
Explanation:
In many-to-one replication, whether with MTree or directory, replication data flows from several source DD systems to a single destination DD system.
References:
Dell EMC Data Domain Operating System Version 6.1, Administration Guide, page 398
Which Dell EMC Data Domain architecture provides fast and efficient deduplication while minimizing disk access?
Answer : B
Explanation:
The distributed segment processing (DSP) component, which reviews the data already stored on the Data Domain system and adds only unique data to storage.
Incorrect Answers:
C: To keep data synchronized during a hardware or power failure, the Data Domain system uses NVRAM (non-volatile RAM) to track outstanding I/O operations.
An NVRAM card with fully charged batteries (the typical state) can retain data for a period of hours, which is determined by the hardware in use.
References:
EMC NetWorker and EMCData Domain Boost, Deduplication Devices Release 8.1 Integration Guide, page 16
What is a benefit of using VTL over a physical tape library with Dell EMC Data Domain?
Answer : A
Data Domain systems simultaneously support data access methods through VTL over Fibre Channel, remote Network Data Management Protocol (NDMP) access over Ethernet for network-attached storage (NAS), Network File System (NFS) and Common Internet File System (CIFS) protocols over Ethernet, and
EMC Data Domain Boost. This deployment flexibility along with simple administration means that users can rapidly adjust to changing enterprise requirements.
References:
https://www.emc.com/corporate/glossary/virtual-tape-library.htm
What is the maximum capacity that a cloud unit can have with a Dell EMC Data Domain DD9500?
Answer : D
Explanation:
EMC Data Domain DD9500, Up to 1.7 PB Usable Capacity.
References:
https://www.corporatearmor.com/product_info.php?products_id=13351
What is the maximum number of Dell EMC Data Domain systems that can be added to a Data Doman Management Center?
Answer : C
Explanation:
A maximum of 100 DD systems can be added to a DD Management Center.
References:
EMC Data Domain Management Center Version 1.3, User Guide, page 24
Which protocol is used by Dell EMC Data Domain Replicator to send encrypted data being replicated between systems?
Answer : D
Explanation:
DD Replication supports encryption of data-in-flight by using standard Secure Socket Layer (SSL) protocol version 3.
References:
https://www.emc.com/collateral/software/white-papers/h7082-data-domain-replicator-wp.pdf, page 11
What is required to implement Dell EMC ProtectPoint with DD Boost?
Answer : D
Explanation:
ProtectPoint operations require both IP network (LAN or WAN) and Fibre Channel (FC) SAN connections.
References:
https://germany.emc.com/collateral/TechnicalDocument/docu59731.pdf
EMC Data Domain Boost for Enterprise Applications and EMC ProtectPoint Database Application Agent, Version 2.0, Installation and Administration Guide, page
When selecting a Dell EMC Data Domain model, what are standard practices to be conservative in calculating capacity and throughput?
Answer : D
Explanation:
To get Capacity % and Througput% use a 100 multiplier, not a 1000 multiplier.
Factor 15-25% buffer capacity for capacity and throughput.
References:
https://www.slideshare.net/solarisyougood/emc-data-domain-advanced-features-and-functions, page 43
A delivery specialist wants to integrate a Dell EMC Data Domain appliance into their current backup environment using CIFS, NFS, DD Boost, and VTL. Which backup applications support these four protocols?
Answer : D
Explanation:
Networker -
A Data Domain system can support mixed environments that may include DD Boost devices, VTLs, and CIFS or NFS AFTD disk configurations. The Data Domain system may require additional licenses for the DD Boost functionality.
For full compatibility with NetWorker, install the latest upgrade of the DD OS.
References:
https://www.emc.com/collateral/TechnicalDocument/docu48337.pdf
Which types of replication are supported in a Dell EMC Data Domain system?
Answer : C
References:
https://www.emc.com/collateral/software/white-papers/h7082-data-domain-replicator-wp.pdf, page 5
A Dell EMC Data Domain user has 10 branch offices. Backup data is replicated to its primary location. For disaster recovery purposes, the primary location is replicated to an offsite location.
Which replication topology does this represent?
Answer : C
Explanation:
DD Replicator supports five replication topologies (one-to-one, one-to-one bidirectional, one-to-many, many-to-one, and cascaded).
In many-to-one replication, whether with MTree or directory, replication data flows from several source DD systems to a single destination DD system. This type of replication can be used to provide data recovery protection for several branch offices on a corporate headquarter’s IT system.
References:
Dell EMC Data Domain Operating System Version 6.1, Administration Guide, page 397
Which functionality is recommended by Dell EMC to be disabled on backup software when configuring Dell EMC Data Domain VTL?
Answer : A
Explanation:
Multiplexing, compression, and encryption of backup data were introduced to provide read parallelism as well as enhanced security and performance during backups. Backing up to a Data Domain system is inherently more secure than tape, and does not suffer performance degradation due to slow backup streams.
Thus the recommendation is to disable any of these features when using a Data Domain system as the target for RMAN.
References:
https://community.emc.com/docs/DOC-35348
Which criteria are used as the basis for configuring the data movement policy of a Dell EMC Data Domain system enabled with Extended Retention?
Answer : A
Explanation:
A retention storage tier is a group of storage shelves, separate from the active storage tier, where backup data is internally migrated to when a policy threshold
(time of most recent modification) is met.
The data movement policies are driven by two user-defined elements:
-> A selected last-modified-time of a file (e.g. after 90 days without modification)
-> A periodic schedule for moving the data (e.g. every week before the cleaning process)
References:
https://www.emc.com/collateral/hardware/white-papers/h8140-data-domain-extendedretention-wp.pdf
What is a characteristic of NFS on a Dell EMC Data Domain system?
Answer : A
Incorrect Answers:
C: Configuring the NFS protocol -
1. Enter yes to configure the NFS protocol.
NFS Configuration -
Configure NFS at this time (yes|no) [no]:
yes
2. Enter a host name to allow client access to the default NFS export.
Backup Server List -
Enter the Backup Server list (NFS clients of /backup)
[*]: host.customer.com
Pending NFS Settings -
Backup Server List -
host.customer.com
Do you want to save these settings (Save|Cancel|Retry):
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