Free D-MSS-DS-23 Exam Braindumps - New 2025 EMC Pratice Exam
Practice Test for D-MSS-DS-23 Certification Real 2025 Mock Exam
EMC D-MSS-DS-23 Exam Syllabus Topics:
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NEW QUESTION # 35
Which Dell Unity XT DPE front-end port connectivity can support up to 30,000 IOPS/port and up to 1,700 MB/s?
- A. 16 Gb FC
- B. 16 Gb FC and 25 GbE iSCSI
- C. 25 GbE iSCSI
- D. 10 GbE iSCSI and 16 Gb FC
Answer: A
Explanation:
16 Gb Fibre Channel (FC) front-end port connectivity on Dell Unity XT DPE can support up to
30,000 IOPS per port and up to 1,700 MB/s. This level of performance makes it suitable for high- demand enterprise applications that require robust and fast storage networking.
NEW QUESTION # 36
Which two workload parameters are required to proceed with sizing for a PowerStore solution?
(Select 2)
- A. Effective Capacity
- B. Response time
- C. IOPS
- D. Data reduction ratio
Answer: A,C
Explanation:
Sizing for PowerStore Solutions:
Accurate sizing for PowerStore solutions requires specific workload parameters to ensure that the storage system meets performance and capacity requirements.
Required Parameters:
IOPS (Input/Output Operations Per Second): A key performance metric indicating the number of read/write operations the system must handle. Essential for determining the required performance capability.
Effective Capacity: The usable storage capacity after considering data reduction technologies like compression and deduplication. Critical for ensuring the system can accommodate the data volume.
NEW QUESTION # 37
What is achieved by adding a top tier of SSDs when designing a Dell Unity XT hybrid solution with FAST VP and FAST Cache?
- A. Improves compression space efficiencies
- B. Provides an additional data redundancy layer
- C. Isolates file top-talkers I/O from block data I/O
- D. Helps keep paged metadata on FLASH media
Answer: D
Explanation:
FAST VP (Fully Automated Storage Tiering for Virtual Pools) and FAST Cache (Fully Automated Storage Tiering for Cache) are features that allow you to optimize the performance of your storage by automatically moving data between different storage tiers based on usage patterns.
The SSD tier is used to store frequently accessed metadata, such as file system structures, directories, and inode tables, which are accessed frequently and are small enough to fit in the SSD cache. Keeping paged metadata on flash media improves the overall system performance, as it allows for faster access to the metadata, reducing the latency and the number of I/O operations needed to access it.
NEW QUESTION # 38
Which low-latency workload type is a best practice for an all-SCM Dell PowerStore array?
- A. Media streaming workloads
- B. Large block workloads
- C. Small block workloads
- D. Backup workloads
Answer: C
NEW QUESTION # 39
What is the maximum number of thin clones per base LUN within Dell Unity XT?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
The maximum number of thin clones per base LUN within Dell Unity XT is 32. Thin clones are efficient copies of a LUN (Logical Unit Number) that share the same underlying storage blocks, allowing for quick and space-saving creation of additional LUNs based on the same data. Reference:Dell Unity XT Thin Cloning Guide
NEW QUESTION # 40
Which Dell EMC Unity OE 5.0 enhancements improve asynchronous replication?
- A. Fan-out and Cascade Replication
- B. GeoSync and NAS server mobility
- C. NAS server mobility and Fan-out Replication
- D. Cascade Replication and GeoSync
Answer: A
Explanation:
Dell EMC Unity OE version 5.0, asynchronously replicated file resources can also be configured in advanced replication topologies. This allows for configurations such as fan-out and cascading replication at the granularity of a NAS Server and its associated file resources. Reference:
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h17827-dell-emc- unity-operating-environment.pdf
NEW QUESTION # 41
Which two attributes characterize I/O workloads for sizing the PowerStore storage solution? (Select 2)
- A. Splitting of Workloads
- B. CloudIQ Reporting
- C. Extent of Serialization
- D. Read vs. Write ratios
- E. Random vs. Sequential I/O
Answer: D
Explanation:
Two key attributes that characterize I/O workloads for sizing the PowerStore storage solution are Random vs.
Sequential I/O and Read vs. Write ratios. Understanding these attributes helps in accurately sizing the storage system to meet performance and capacity requirements.
NEW QUESTION # 42
A Dell PowerStore 9000X came online after being initially configured seven days ago. The manager Ul shows capacity but no forecasting metrics Why are forecasting metrics not being displayed?
- A. Forecasting will not display until 16 days after initial configuration
- B. There is not enough capacity in the appliance
- C. Forecasting was not turned on during configuration
- D. The capacity forecasting license must be installed
Answer: A
NEW QUESTION # 43
Which network option should be configured to provide the best iSCSi performance on a Dell Unity XT array?
- A. Disable flow control
- B. Single VLAN for all traffic
- C. Jumbo frames
- D. iSCSI offload
Answer: C
NEW QUESTION # 44
A customer has three Dell PowerStore 1000Ts in a cluster and wants to add a PowerStore 5000X. What must they do?
- A. Create a cluster with the 5000X.
- B. Use the PowerStore Manager to add the appliance.
- C. Reconfigure the existing cluster.
- D. Use the PowerStore CLI to add the appliance.
Answer: A
Explanation:
* PowerStore Clustering:
* PowerStore appliances can be clustered to form a single management entity. However, adding different models within the same cluster follows specific guidelines.
* Cluster Compatibility:
* PowerStore 1000T and 5000X are different models with potentially different hardware configurations and capabilities.
* Dell recommends creating a new cluster with the PowerStore 5000X instead of mixing models within an existing cluster to ensure compatibility and optimal performance.
* Adding Appliances:
* Using the PowerStore CLI or PowerStore Manager to add appliances within the same model range is common, but mixing models generally requires creating a separate cluster.
* Dell Midrange Storage References:
* Dell PowerStore documentation provides guidelines on clustering and appliance management, highlighting the importance of model compatibility.
References:
* Dell PowerStore Clustering Guide
* Dell Community on PowerStore Clusters
NEW QUESTION # 45
A company has a Dell Unity XT 880 at its Boston site providing file storage for a business production application. The company has a second remote site 8 km (5 mi) away in Cambridge. A third site is in New York (342 km (213 mi) from the Boston site). How can the same production data be protected against system outage with a zero RPO and a maximum of 15 minutes RPO data recovery?
- A. Synchronous replicate from Boston to Cambridge Synchronous replicate from Cambridge to New York
- B. Synchronous replicate from Boston to Cambridge Synchronous replicate from Boston to New York
- C. Asynchronous replicate from Boston to Cambridge Asynchronous replicate from Cambridge to New York
- D. Synchronous replicate from Boston to Cambridge Asynchronous replicate from Boston to New York
Answer: D
Explanation:
Dell Unity XT offers both synchronous and asynchronous replication to protect data and ensure business continuity.
Synchronous replication is used for zero RPO, ensuring no data loss, but it is typically limited to shorter distances due to latency concerns.
Asynchronous replication is suitable for longer distances and provides near real-time data protection with a minimal RPO.
Distance Considerations:
The distance between Boston and Cambridge (8 km) is suitable for synchronous replication, providing zero RPO.
The distance between Boston and New York (342 km) is better suited for asynchronous replication due to latency, ensuring data recovery with a minimal RPO, such as 15 minutes.
Optimal Replication Strategy:
Synchronous replication from Boston to Cambridge ensures zero RPO for critical data protection.
Asynchronous replication from Boston to New York provides additional data protection with a 15-minute RPO, suitable for longer-distance disaster recovery.
Dell Midrange Storage References:
Dell Unity XT documentation and best practices provide detailed guidelines on configuring synchronous and asynchronous replication.
Community forums and support resources from Dell Technologies offer insights into real-world implementation strategies.
References:
Dell Unity XT Replication Guide
Dell Community on Data Protection
NEW QUESTION # 46
Which two parameters avoid bottlenecks and improve performance when sizing Dell Unity XT storage solutions? (select 2)
- A. Workload Types
- B. Network Latency
- C. Port load balancing
- D. Port Utilization
- E. Network Bandwidth
Answer: A,B
NEW QUESTION # 47
What is a best practice for host connectivity on Dell EMC PowerStore?
- A. Host must be directly attached, but there is no requirement for multipath software
- B. HBAs must be attached to a dual fabric and multi-path software is required
- C. Requires multipath software and one HBA
- D. Requires multipath software and iSCSI
Answer: D
NEW QUESTION # 48
Which parameters can be selected when sizing a Dell Unity XT 480F using the System Design method?
- A. One of two block sizes
Application type - B. Drive count and RAID level
Custom I/O details about workload - C. Data reduction ratio
Percentage of sequential writes and reads - D. One of four workload types
Drive count and RAID level
Answer: D
NEW QUESTION # 49
Which NVMe SSDs are supported by Dell EMC PowerStore?
- A. 1920 GB, 3840 GB, and 7680 GB only
- B. 3840 GB, 7680 GB, and 15360 GB only
- C. 1920 GB, 3840 GB, 7680 GB, and 15360 GB
- D. 960 GB, 1920 GB, 3840 GB, and 7680 GB
Answer: C
Explanation:
https://www.delltechnologies.com/resources/en-us/asset/data-sheets/products/storage/h18143- dell-emc-powerstore-family-spec-sheet.pdf
NEW QUESTION # 50
What is the maximum RPO that can be configured on a Dell Unity XT block-asynchronous replication session?
- A. 7 days
- B. 48 hours
- C. 14 days
- D. 24 hours
Answer: A
Explanation:
* Asynchronous Replication in Dell Unity XT:
* Asynchronous replication provides data protection over longer distances with flexible RPO settings.
* Maximum RPO:
* The maximum Recovery Point Objective (RPO) that can be configured for a block-asynchronous replication session in Dell Unity XT is 7 days.
* This allows for up to a week's worth of data to be replicated asynchronously, balancing data protection and replication overhead.
* Other Options:
* 24 hours, 48 hours, 14 days: These options do not align with the maximum configurable RPO of 7 days for asynchronous replication in Dell Unity XT.
* Dell Midrange Storage References:
* Dell Unity XT documentation provides detailed guidelines on configuring asynchronous replication and the available RPO settings.
* Community forums and support resources from Dell Technologies offer insights into best practices for data protection.
References:
* Dell Unity XT Replication Guide
* Dell Community on Data Protection
NEW QUESTION # 51
What is the maximum supported drive configuration in the base enclosure of the PowerStore 3200T?
- A. 23 x NVMe SSDs 2 x NVMe NVRAM
- B. 21 x NVMe SCMs 4 x NVMe NVRAM
- C. 21 x NVMe SSDs 2 x NVMe NVRAM
- D. 23xNVMe SCMs 2 x NVMe NVRAM
Answer: C
NEW QUESTION # 52
Which tool can be used to migrate file data for Windows hosts form a legacy VNX array to a new Dell Unity XT array?
- A. SANCopy
- B. rsync
- C. Robocopy
Answer: B
NEW QUESTION # 53
A systems administrator is evaluating a new solution for the deployment of new applications. The solution must offer storage over iSCSI for 50 Hyper-V VMs and storage over SMB to use as a user-shared area. High performance is a requirement, so the administrator has decided on NVMe SSD as the media.
Which solution meets these requirements?
- A. Dell PowerStore T deployed in unified mode
- B. Dell Unity XT deployed in unified mode
- C. Dell PowerStore T deployed in block-optimized mode
- D. Dell PowerStore X deployed in unified mode
Answer: A
NEW QUESTION # 54
A customer asks you about adding 4-port 1 GbE BaseT connectivity to their Dell EMC Unity XT series array.
What should be your response?
- A. 4-port 1GbE BaseT module is supported across all Unity models
- B. 4-port 1GbE BaseT module is supported on Unity XT with the latest Enginuity code
- C. 4-port 1GbE BaseT module is not available on Unity XT
- D. 4-port 1GbE BaseT module is provided by the Mezz card on Unity 80 series models
Answer: C
NEW QUESTION # 55
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