An application generates 4200 small random I/Os at peak workloads with a read/write ratio of 2:1. What is the disk load at peak activity for a RAID 6 configuration?
2800
5600
11200
8400
What is an accurate statement about a software RAID implementation?
Supports the upgrade of RAID software on incompatible O/S
Uses CPU cycles of a compute system to perform RAID calculation
Uses a specialized hardware controller to perform RAID calculation
Supports all RAID levels
What is an accurate statement about a hardware RAID implementation?
Uses CPU cycles of a compute system to perform RAID calculations
Uses a specialized hardware controller installed on a storage array
Offers a low-cost solution for providing disk protection
Requires a RAID controllerand operating system to be compatible
Which type of LUN provides full control for precise data placement and allows an administrator to create LUNs on different RAID sets if there is workload contention?
Thin
Traditional
Journal
Bitmap
Which LUN expansion technique provides both capacity expansion and performance improvement?
Virtual metaLUN
Concatenated metaLUN
Striped metaLUN
Partitioned metaLUN
What provides the ability to automatically relocate extents across physical storage drives over the entire pool when new drives are added to the pool?
Storage pool tiering
Storage pool rebalancing
Extent relocation
Automated extent tiering
What is a benefit of implementing the server flash caching technology in a storage environment?
Improves the network performance during peak workloads
Eliminates the need for cache on a storage system
Reduces the number of storage systems in a data center
Provides performance acceleration for read intensive workloads
Which technique protects the data in cache from power failures?
Mirroring
Cache tiering
Vaulting
Idle flushing
Which EMC block-based storage system uses a cluster design to scale both capacity and performance?
Isilon
XtremSF
ScaleIO
XtremIO
To improve performance, which EMC product allows a PCIe flash card to be deployed in a compute system?
XtremCache
Which NAS implementation requires separate management of the NAS head and the storage?
Scale-out
Gateway
Integrated
Unified
Which operation is performed by a scale-out NAS cluster when clients send data to the cluster?
Data is consolidated into a block and then stored on the NAS head
Data is divided and stored on multiple nodes in parallel
NAS file system and cluster grow dynamically to store the data
Data is evenly distributed to every file system in the cluster
What is an accurate statement about the Network File System (NFS) protocol?
Provides a set of remote procedure calls to access a remote file system
Uses the server message block protocol to provide file locking capability
Translates block I/O requests from a file system into object-level requests
Automatically scales the file systems on clients as the workload increases
What is an accurate statement about the Common Internet File System (CIFS) protocol?
Uses a Remote Procedure Call mechanism to provide access to the CIFS supported file systems
Contains an open variation of the stateless user datagram protocol that stores information about open files
Uses file system locking to enable users to simultaneously overwrite all metadata of a file system
Enables a CIFS server to maintain connection information regarding every connected client
What is an accurate statement about an integrated NAS controller?
Stripes data across multiple NAS systems for data protection
Contains a specialized operating system dedicated to file serving
Abstracts and pools NAS controllers across multiple NAS systems
Contains an FC Forwarder that is optimized for file sharing functions
What accurately describes the function of the policy engine in a file-level storage tiering environment?
Creates a stub file in secondary storage pointing to data on the primary storage
Runs the backup agent and determines the files to be copied to the secondary storage
Facilitates moving data from primary storage to secondary storage based on pre-defined policies
Ensures that primary and secondary storage have identical data for compliance
Which process uses a file-level storage tiering technique to perform policy-based data movement?
Backup
Replication
Deduplication
Archiving
Which elements are associated with an object in an object-based storage system?
Data, metadata, object ID, and attributes
Metadata, object ID, attributes, and file path
LUN ID, data, metadata, and object ID
Object ID, attributes, LUN ID, and file path
Which EMC product is a hyper-scale storage infrastructure that provides universal accessibility with support for object and HDFS?
Data Domain
ECS Appliance
Centera
In an object-based storage system, data is divided into 9 data segments and 3 coding segments using the erasure coding technique. What is the maximum number of disk drive failures against which data is protected by this configuration?
12
9
6
3
In an object-based storage system, data is divided into 10 data segments and 4 coding segments using the erasure coding technique. What is the maximum number of disk drive failures against which data is protected by this configuration?
4
10
14
Which feature of an object-based storage system abstracts and provides a common view of storage independent of location to applications?
Flexible data access
Multi-tenancy
Global namespace
Scale-out architecture
What is an advantage of a software-based object storage implementation?
Requires less storage capacity to store a large number of objects
Provides the flexibility to reuse the existing infrastructure
Provides the flexibility to create more than one object ID for an object
Requires less hardware to support scalable architecture
Which EMC product provides a software-defined platform that supports both block and file storage services?
ViPR Controller
Elastic Cloud Storage
Which EMC product provides a software-defined storage platform that supports object storage services?
Which EMC product provides a software-defined storage platform to create a compute-based storage area network?
Atmos
Which component of a software-defined storage (SDS) environment manages and provisions storage?
REST API
SDS controller
SDS web service
Storage agent
Which component of a software-defined storage (SDS) environment enables integration with external monitoring tools?
Metadata service
What is a function of the metadata manager in a compute-based storage area network (SAN)?
Performs the I/O operations on the local storage of a compute system as requested by a client
Controls all data read and write operations in a compute-based SAN
Provides an interface to the software-defined storage controller
Controls load balancing and data migration in a compute-based SAN
Which global addressing does the REST application programming interface use for the discovery of a storage service?
Namespace
Uniform Resource Identifier
Extensible Markup Language
Controller-provided MAC address
What is a benefit of link aggregation in a SAN?
Distributes the network traffic across all virtual SANs, ensuring even virtual SAN utilization
Optimizes performance by consolidating all inter-switch links into a single physical link
Provides a higher throughput than a single inter-switch link can provide
Provides the flexibility to deploy the same inter-switch links for both FC and iSCSI traffic
What accurately describes link aggregation in a SAN?
Combines two or more parallel inter-switch links into a single logical inter-switch link
Consolidates compute-to-compute traffic and storage traffic into a single inter-switch link
Replaces multiple parallel inter-switch links by a single physical inter-switch link
Aggregates the data transmission rate of all HBA and storage system port pairs
What is a benefit of a storage area network (SAN)?
Ensures secure data transmission using only channel technologies
Ensures high response times without the protocol overhead
Enables consolidation of control and data planes in a single system
Enables compute systems across locations to access shared storage
What is a characteristic of software-defined networking?
Abstracts and separates the control plane from the data plane
Controller in network switches takes over data plane functions
Data plane sends instructions to the control plane to handle network traffic
External software combines both data plane and control plane functions
What is a function of the FC-1 layer of the Fibre Channel (FC) protocol stack?
Provides FC addressing
Defines data encoding
Maps upper layer protocols to FC layers
Defines the physical interface
What keeps the name server up-to-date on all switches in a fabric?
Management server
Zoning
SW-RSCN
FLOGI
Which data structure enables two node ports to identify and manage a set of information units in a Fibre Channel (FC) SAN?
Domain
Sequence
Frame
Exchange
What is a benefit of block-level storage virtualization?
Enhances performance by limiting the RSCN traffic
Enables the online expansion of virtual volumes
Improves security through logical segmentation of block storage devices
Increases scalability through separation of FC addresses across VSANs
Which fabric service distributes SW-RSCNs to the other switches in a Fibre Channel SAN?
Fabric controller
Fabric login server
Fabric management server
Name server
What accurately describes a VSAN?
A logical fabric on an FC SAN that has a 1-to-1 relationship with a zone in the FC SAN
A logical fabric on an FC SAN that enables communication among a group of nodes
A logical fabric across FC SANs that aggregates the FC SANs to create a network pool
A logical fabric across FC SANs that allows non-disruptive file mobility between the SANs
What maps the logical path of a file system to its physical path in a file-level virtualization implementation?
Remote procedure call
Distributed file system
Cache coherency
