Practice Free D-MSS-DS-23 Exam Online Questions
An application owner needs 10 volumes for their application to be created, and they must have snapshots taken simultaneously with write-order-consistency.
Which feature in Dell PowerStore should be used to enable this requirement?
- A . Volume Groups
- B . Consistency Groups
- C . Data Groups
- D . Snapshot Groups
A PowerStore solution must support hosts using 100 Gb/s Eth connectivity and hosts using 16 Gb/s connectivity.
How should the I/O Modules be populated according to Dell Best Practices?
- A . 100 Gb/s Eth and 16Gb/s FC I/O Modules can be placed into any slot
- B . 100Gb/s Eth I/O Module in Slot 1 and 16Gb/s FC I/O Module in Slot 0
- C . 100Gb/s Eth I/O Module in Slot0 and 16Gb/s FC I/O Module in Slot 1
What tools can be used to migrate block data from a legacy VNX array to a new Dell Unity XT array?
- A . SANCopy and PowerPath Migration Enabler
- B . EMCopy and SANCopy
- C . PowerPath Migration Enabler and Rsync
- D . Rsync and EMCopy
A
Explanation:
Training: Tools for Block and File Data Migration pg 41 – Midrange_Storage_Solutions_Design_PG.pdf
Which QoS options are supported by Dell EMC Unity XT?
- A . VMFS Datastore and Storage Pool
- B . iSCSI and Attached Snapshot
- C . Individual LUN and iSCSI
- D . Individual LUN and Group LUN
A customer has a data center with 30 different applications running on 30 volumes presented from PowerStore. They want to design a DR site within 300 km with 15 min RPO using storage-based asynchronous replication.
Which protection policy design leads to most stable storage performance?
- A . Create 15 protection policies that are assigned to a pair of volumes, each scheduled with a one minute shift from each other.
- B . Create two protection policies that are assigned to 15 volumes, each scheduled with a five minute shift from each other.
- C . Create a single protection policy assigned to 30 volumes, each scheduled with a five minute shift from each other.
- D . Create 30 protection policies that are assigned to a single volume, each scheduled with a one minute shift from each other.
C
Explanation:
In a scenario where a customer needs to design a DR site with a 15-minute RPO using storage-based asynchronous replication, creating a single protection policy assigned to 30 volumes with a five-minute shift between each volume is the most stable design. This approach ensures that the replication load is evenly distributed over time, minimizing the impact on storage performance.
Reference: Dell PowerStore Asynchronous Replication Best Practices.
Dell Technologies documentation on protection policies and replication strategies.
A customer wants to expand their Dell EMC Unity Hybrid system, which includes a pool of 64 drives in a RAID 5 (4+1) configuration.
What is the minimum number of drives needed to expand the pool?
- A . 1
- B . 5
- C . 6
- D . 7
C
Explanation:
DELL PDF document about dynamic pools: h16289-dell_emc_unity-dynamic_pools.pdf Page 20-21. The smallest RAID 5 stripe width the system supports is a 4+1. The smallest dynamic pool created with the RAID 5 4+1 configuration is 6 drives. The minimum drive count includes the number of drives specified in the stripe width, plus the hot spare capacity. The hot spare capacity is selected by the user at pool creation, and can either be set to 1 or 2 drives for every 32 drives in the pool.
Which two attributes characterize I/O workloads for sizing the PowerStore storage solution? (Select 2)
- A . Extent of Serialization
- B . Splitting of Workloads
- C . Random vs. Sequential I/O
- D . Read vs. Write ratios
- E . CloudIQ Reporting
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.
Reference: Dell EMC PowerStore Sizing Guide.
Dell Technologies documentation on I/O workload characterization
What is recommended maximum cable length for PowerStore back-end NVMe cabling to avoid performance issues?
- A . 100 meters
- B . 10 meters
- C . 3 meters
- D . 5 meters
B
Explanation:
The recommended maximum cable length for PowerStore back-end NVMe cabling to avoid performance issues is 10 meters. This recommendation helps to ensure signal integrity and optimal performance across the NVMe interface, which is critical for maintaining the high throughput and low latency characteristics of NVMe storage.
Which options are valid Mezzanine card choices on a Dell PowerStore in a multi-appliance cluster?
- A . 4-port 16 Gb FC card or 4-port 32 Gb FC card
- B . 4-port 25 GbE SFP-based card or 4-port 10GBaseT card
- C . Mixed 2-port 32 Gb FC and 2-port 25 GbE card
- D . Mixed 2-port 25 GbE SFP and 2-port 10GBaseT card
Which backend port are required to expand the PowerStore x200 models to have NVMe Expansions?
- A . 100 GbE 2-port Mezz card
- B . 25 GbE 4-Port Mezz Card
- C . 32 Gb FC I/O Module
B
Explanation:
To expand the PowerStore x200 models with NVMe expansions, the required backend port is the 25 GbE 4-Port Mezz Card. This card provides the necessary connectivity and bandwidth to support NVMe expansions, ensuring high-speed data transfer and low latency, which are critical for NVMe performance.
Reference: Dell PowerStore Expansion Guide