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NEW QUESTION # 38
Which optional I/O Module card type is supported for both Dell PowerStore T and Dell PowerStore X?
- A. 8 Gb Fibre Channel
- B. 25GbE
- C. 32 Gb Fibre Channel
- D. 10GbEBaseT
Answer: C
Explanation:
Both Dell PowerStore T and Dell PowerStore X support the 10 GbE BaseT optional I/O module card type. This card provides 10 Gbps Ethernet connectivity and can be used to connect the storage array to a network. The other options are not supported by both models. 25 GbE and 32 Gb Fibre Channel are generally faster and used for high-performance systems, while 8 Gb Fibre Channel is an older standard, and not supported by Dell PowerStore T and Dell PowerStore X.
NEW QUESTION # 39
A systems administrator has deployed a Dell Unity XT 380F system with 15x 1.92 TB SSD drives, in a RAID
5 dynamic pool. Shortly after deployment, the administrator wants to expand the capacity of the system and use larger drives to increase the density. What will happen if the administrator adds 4x 3.84 TB SSD drives?
- A. The full capacity of the drives will be available.
- B. Three of the drives will be added with a fourth reserved as spare.
- C. The mixing of drive types is not supported, and the operation will fail.
- D. Only half of the capacity of the new drives will be available.
Answer: D
Explanation:
InDell Unity XT dynamic pools, when new drives are added to an existing pool, the system automatically integrates these drives into the pool. However,Unity XT dynamic pools only use the capacity of new drives up to the size of the smallest drive in the pool(a concept known ascapacity equalization).
#What happens here?
The original pool was created with1.92 TB SSD drives.
The administrator adds4 x 3.84 TB SSD drivesto the same pool.
Because the pool's smallest drive is1.92 TB, the system uses only1.92 TBof capacity from each of the new drives.
The remaining1.92 TBof the new drives' capacity isnot utilizedin the dynamic pool.
#Key Takeaways:
This behavior ensures uniform capacity usage across all drives in the pool, maintainingRAID group balance and data distribution.
To fully leverage the 3.84 TB capacity, the administrator would need to create anew poolusing only the larger drives.
#Documentation Reference:
Dell EMC Unity XT Best Practices Guide (Dell Technologies)- Discusses dynamic pool behavior and drive capacity equalization.
Dell EMC Unity XT Dynamic Pools Technical White Paper- Provides detailed explanations on how dynamic pools manage mixed drive sizes.
NEW QUESTION # 40
What is a Dell recommendation when connecting ESXi hosts to PowerStore?
- A. Configure a minimum of two NAS server when using vVol Datastores
- B. Use the default 8K host I/O size when using NFS
- C. Configure Round Robin Multipathing with an IOPS limit of 1024
- D. Enable Delayed ACK when configured using iSCSI
Answer: A
NEW QUESTION # 41
Which file resources are supported with Dell EMC Unity asynchronous replication?
- A. File systems and LUNs
- B. Consistency Groups and file systems
- C. LUNs and VMFS datastores
- D. NAS servers and NFS datastores
Answer: D
Explanation:
Reference: https://www.delltechnologies.com/en-us/documentation/unity-family/unity-p- replication-config/02-unity-rep-br-workflow.htm
NEW QUESTION # 42
Which tool must a Solution Architect use to check compatibility of a new storage solution with an existing infrastructure?
- A. E-Lab Navigator
- B. Atlas
- C. Live Optics
- D. DTM Assist
Answer: A
Explanation:
The tool that a Solution Architect must use to check the compatibility of a new storage solution with an existing infrastructure is E-Lab Navigator. E-Lab Navigator is a comprehensive online database provided by Dell that includes compatibility information for various hardware and software configurations. It helps ensure that new storage solutions are compatible with existing infrastructure, reducing the risk of integration issues.
Reference:Dell E-Lab Navigator Overview
NEW QUESTION # 43
What is the maximum percentage of drives busy that the simple performance path considers to determine the achievable IOPS rate?
- A. 70%
- B. 80%
- C. 60%
- D. 50%
Answer: B
Explanation:
* The simple performance path in the Dell Unity XT sizer tool uses predefined configurations to streamline the sizing process.
* This path considers various parameters to estimate the achievable IOPS rate and overall system performance.
* Drive Busy Percentage:
* The simple performance path assumes a maximum of 80% drive busy percentage to determine the achievable IOPS rate.
* This threshold ensures that the drives are utilized efficiently without overloading, balancing performance and longevity.
* Other Percentages:
* Lower percentages (50%, 60%, 70%) would be too conservative and might result in under-utilization of the system's capabilities.
* Dell Midrange Storage References:
* Dell Unity XT documentation and sizer tool guides provide detailed information on performance metrics and assumptions used for sizing.
* Community forums and support resources from Dell Technologies offer additional insights and user experiences.
References:
* Dell Unity XT Sizer Tool Guide
* Dell Community on Storage Performance
NEW QUESTION # 44
A technical architect is helping a customer prepare for a data center maintenance window. All applications must failover to the disaster recovery site. The customer also wants to test their disaster recovery plan. What PowerStore Manager replication option should be used to address the customer's need, and from which site should the option be run?
- A. Planned failover from source site
- B. Planned failover from target site
- C. Failover from target site
- D. Failover from source site
Answer: A
Explanation:
For a customer preparing for a data center maintenance window and wanting to test their disaster recovery plan, the recommended PowerStore Manager replication option is a planned failover from the source site. This process involves initiating the failover from the source site, ensuring a controlled transition of applications and services to the disaster recovery site. Planned failover allows for testing the disaster recovery plan while maintaining data integrity. Reference:Dell PowerStore Replication Best Practices
NEW QUESTION # 45
Which network option should be configured to provide the best iSCSI performance on a Dell Unity XT array?
- A. Single VLAN for all traffic
- B. Disable flow control
- C. iSCSI offload
- D. Jumbo frames
Answer: D
Explanation:
For optimal iSCSI performance on a Dell Unity XT array, configuring jumbo frames is recommended. Jumbo frames allow for larger packets of data to be sent over the network, reducing the CPU load on both the storage array and the host, and improving overall throughput. Configuring jumbo frames typically involves setting the MTU (Maximum Transmission Unit) to 9000 bytes on all network devices along the path.
NEW QUESTION # 46
What are all the capabilities of a Dell Unity XT hybrid system that optimize for workload skew?
- A. FAST Cache, Cache, and HDDs
- B. HDDs and FAST Cache
- C. Cache, FAST Cache, and FAST VP
- D. FAST VP and Cache
Answer: C
NEW QUESTION # 47
Which are benefits of choosing the highest capacity flash drives when designing a Dell Unity XT All-Flash system?
- A. Enhances data security and system boot time
- B. Lowers physical space power and cooling requirements
- C. Reduces maintenance and rebuild time
- D. Decreases ware-leveling, performance and redundancy requirements
Answer: B
Explanation:
Choosing the highest capacity flash drives when designing a Dell Unity XT All-Flash system can provide several benefits, including lower physical space, power and cooling requirements.
Additionally, higher capacity drives can also improve system boot time, reduce maintenance and rebuild time, and decrease wear-leveling, performance, and redundancy requirements.
NEW QUESTION # 48
A Dell EMC Unity storage administrator has 10 hosts. One of the hosts experiences occasional, huge IO bursts.
What is a best practice for avoiding performance issues during these burst periods?
- A. Enable Quality of Service (QoS) then configure burst settings
- B. Enabling Quality of Service (QoS) will limit the burst problem
- C. Quality of Service (QoS) is enabled by default, so one only needs to configure burst settings
- D. Enable Quality of Service (QoS) then limit I/O for the entire FC port
Answer: A
NEW QUESTION # 49
Which two attributes characterize I/O workloads for sizing the PowerStore storage solution?
(Select
2)
- A. CloudIQ Reporting
- B. Extent of Serialization
- C. Splitting of Workloads
- 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 # 50
Recent legislation requires a government customer to enhance data security by utilizing D@RE with SED drivers and use Level 3 certified security.
Which KMS product should be recommended for use with Dell EMC SC Series arrays?
- A. Gemalto SafeNet K460
- B. StorSecure StorMagic
- C. Dell EMC CloudLink
- D. Thales Vormetric VTE
Answer: A
Explanation:
Reference: https://downloads.dell.com/manuals/all-
products/esuprt_solutions_int/esuprt_solutions_int_solutions_resources/s-solution- resources_white-papers108_en-us.pdf (9)
NEW QUESTION # 51
What chunk size of data is identified and moved temporarily to FAST Cache within Unity?
- A. 256 KB
- B. 64 KB
- C. 128 KB
- D. 32 KB
Answer: B
Explanation:
During normal operation, a promotion to FAST Cache is initiated after the Policy Engine determines that 64 KB block of data is being accessed frequently. For consideration, the 64 KB block of data must have been accessed by reads and/or writes multiple times within a short amount of time.
NEW QUESTION # 52
When designing a system to support Oracle OLAP Workload for a new customer with no I/O details, what are the default selections for the I/O profile input in sizer?
- A. Random Read: 50% at 32 KiB Random Write: 50% at 32 KiB
- B. Random Read: 70% at 8 KiB Random Write: 30% at 8 KiB
- C. Sequential Read: 80% at 8 KiB Sequential Write: 20% at 8 KiB
- D. Sequential Read: 70% at 8 KiB Sequential Write: 30% at 8 KiB
Answer: B
Explanation:
When designing a system to support an Oracle OLAP (Online Analytical Processing) Workload for a new customer without specific I/O details, the default selections for the I/O profile input in the sizer tool are typically set to "Random Read: 70% at 8 KiB, Random Write: 30% at 8 KiB." Here's a detailed explanation:
* Oracle OLAP Workload Characteristics:OLAP workloads generally involve heavy read operations with a focus on retrieving and analyzing large datasets. The read operations are often random due to the nature of querying various parts of the data.
* Default I/O Profile Selection:
* Random Read:70% - This reflects the high read intensity typical of OLAP workloads, where data is accessed non-sequentially.
* Random Write:30% - Although less frequent than reads, writes still occur randomly as new data is added or existing data is updated.
* Sizer Tool Configuration:The Dell sizer tool uses these default I/O profile settings to estimate the required storage performance and capacity. This helps in designing a system that can handle the expected workload efficiently.
* Performance Optimization:The chosen I/O profile ensures that the storage system is optimized for the specific access patterns of OLAP workloads, providing a balanced approach to handling both reads and writes.
References:
* Dell Technologies PowerStore Documentation
* Dell Entry-Level and Mid-Range Storage Community
* Dell Storage Products Overview
By understanding the default I/O profile settings used by the sizer tool, system designers can ensure that the storage solution is well-suited to meet the demands of Oracle OLAP workloads.
NEW QUESTION # 53
What benefit do higher capacity drives provide in a Dell Unity All Flash array?
- A. Efficient utilization of front end ports
- B. Larger I/O size
- C. Less physical space is used
Answer: C
Explanation:
Higher capacity drives in a Dell Unity All Flash array provide the benefit of using less physical space. This is particularly advantageous in data centers where space is at a premium. By utilizing higher capacity drives, more storage capacity can be achieved within the same physical footprint, leading to greater efficiency and potential cost savings. Here's why higher capacity drives are beneficial:
Space Efficiency: Higher capacity drives allow for more data to be stored in fewer drives, conserving rack space.
Cost Savings: Fewer drives can reduce power and cooling requirements, leading to operational cost savings.
Scalability: Higher capacity drives enable easier scalability as storage needs grow, without requiring additional physical space.
NEW QUESTION # 54
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