DELL STORAGE Exam
D-PST-OE-23 Questions V9.02
Dell Storage
Topics - Dell PowerStore
Operate 2023 Exam
1.A storage team requires NFS datastores to be configured for their virtualized
environment. The Dell Unity XT storage array must provision an NFS datastore to the
ESXi hosts and manage storage-related tasks.
Which two configurations must be completed to achieve these requirements? (Select
2)
A. Configure a capacity profile for a storage pool.
B. Create NFS datastores after scanning the host for new storage.
C. Create NFS-enabled NAS server.
D. Register the ESXi host.
Answer: CB
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2.There are 240 snapshots that are created for a Base LUN on a Dell Unity XT array.
What is the maximum number of thin clones that can be created from the Base LUN?
A. 8
B. 16
C. 32
D. 64
Answer: B
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3.Refer to the exhibit.
A storage administrator noticed that the Test_Dev system has turned red
What is the cause of this issue?
A. Storage pool performance is impacted because of prolonged disk queue length.
B. Storage pool has a component failure.
C. Storage pool is full and oversubscribed.
D. Data protection for this storage pool is not configured.
Answer: A
4.A storage administrator must provide maximum remote protection of file storage
between Dell Unity XT 38oF systems.
How many NAS server replication sessions are supported?
A. 90
B. 128
C. 50
D. 64
Answer: A
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5.A storage administrator performs a monthly performance analysis of a Dell Unity XT
storage array using CloudlQ insight reports. Three LUNs are set with a Host IO Limits
policy The administrator discovers that the throughput IOPS on one LUN (Test_LUN)
has increased by 1000 lOPS compared to the two previous months
What is the cause of the spike in lOPS?
A. Test_LUN was expanded by 10o GB and a Density-based Host IO limit policy was
set for all three LUNs.
B. Test_LUN was expanded by 100 GB and a Density-based Host IO limit policy was
set only for Test_LUN.
C. Another Absolute Host lO limit policy with additional 10oo IOPS was set on
Test_LUN.
D. Host IO limit of Test LUN was edited and the limit was increased by 1000 IOPS.
Answer: B
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6.An administrator initially created a Thin Provisioned file system (FS) on a Dell Unity
XT. They now want to change that FS to Thick Provisioned.
What is a consideration?
A. Unmap/unmount the FS and use the Initial Configuration Wizard.
B. Unmap/Unmount the FS and change FS properties.
C. Convert the FS from Thin to Thick through Unisphere.
D. The FS cannot be changed from Thin to Thick.
Answer: D
7.Which two vVol object types can have a snapshot? (Select 2)
A. Config
B. Data
C. Mem
D. Swap
Answer: BC
8.A storage administrator has added multiple resources to a single density-based
Host I/O Limit policy for the following storage resources:
- LUN A:25GB
- LUN B:25 GB
- LUN C:50 GB
- Density-Based Limit:20 IOPS
What is the total IOPS set by this policy?
A. 2000
B. 500
C. 60
D.1000
Answer: A
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9.What are two benefits of using Unity Asynchronous Local Replication to replicate
storage resources between pools on a system? (Select 2)
A. Balance capacity
B. Change disk type
C. Change storage groups
D. Change NAS server names
E. Enable data reduction
Answer: AB
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10.A storage administrator is monitoring the pool capacity of two identical Dell Unity
XT systems. Each system has every LUN replicated to the other system and all
replication sessions are in sync. Both systems are used for production storage.
CloudiQ is receiving updates from both systems, but shows that one of them is filling
up more quickly than the other.
What is the cause of this behavior?
A. CloudlQ is not receiving the same amount of updates from one of the two systems.
B. One of the Unity systems is used less than the other one.
C. Dell Unity Data Reduction is not identically enabled on LUNs on both systems
D. Dell Unity Data Reduction license is not enabled on one of the two systems.
Answer: C
11.What is the correct order of steps for the Failover with Sync operation from site A
to site B?
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Answer:
12.A storage administrator is having difficulty troubleshooting a Dell Unity XT storage
system and contacts the Dell support for assistance. Dell support must run some
service commands on the Storage Processors to troubleshoot the issue further.
What step must be taken to ensure that Dell support has remote access to the
storage system?
A. Set Unisphere preferences to Optimize for remote access
B. Specify the Remote Logging configuration.
C. Enable Service mode on the Storage Processors
D. Enable SSH on the storage system.
Answer: D
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13.What are considerations when configuring a Proxy NAS server?
A. The server must match source NAS server interfaces.
B. Different access protocols may be used as the replicated NAS server.
C. The server can be created on either SP regardless of where the replicated NAS
server resides.
D. The server must be created on the same SP as the replicated NAS server.
Answer: A
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14.What is the correct sequence of steps to provision storage for SMB NAS clients?
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Answer:
15.What is a characteristic of thin clones?
A. Thin clones reflect changes to properties on the Base LUN made by a user.
B. The source snapshot cannot be deleted after a thin clone is created.
C. Data protection is main use case for thin clones.
D. Thin Clones are supported for snapshots of thick LUNs.
Answer: B
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16.A system engineer created one NAS server using NFSv4 protocol with one NFS
share named AppTech1. They gave one host access but were unsuccessful in
mounting the share.
Where should the system engineer check to ensure that the host has proper access?
A. Host properties
B. File system properties
C. NAS server properties
D. NFS share properties
Answer: D
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17.From which storage resources can a thin clone be created?
A. VMFS datastore and vVol datastore
B. File system and VMFS datastore
C. File system and thin LUN
D. Thin LUN and consistency group
Answer: C
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18.A Windows test server ran a stress test program that generated a large amount of
throughput. This test resulted in performance slowdowns on production hosts sharing
VMFS datastore.
What Dell Unity XT feature can a storage administrator use to prevent this problem?
A. File System Quotas
B. Host I/O Limits
C. FAST Cache
D. Bandwidth Schedules
Answer: B
19.What does the Dell Unity XT system do after a NAS Server starts outbound traffic
to an external service?
A. Creates an active interface buffer cache in DRAM
B. Uses Packet Reflect for outbound communication
C. Selects interfaces based on advanced static routes
D. Uses the active production interface
Answer: D
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20.What is a consideration when expanding a dynamic pool?
A. The maximum number of slices in a private LUN is 256.
B. The maximum number of drives is 64 in a drive partnership group.
C. The maximum number of drives is 16 in a RAlD Group.
D. The minimum number of drives in a RAID 5 (4+1) RAID Group is 5.
Answer: D
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21.The LUN Snapshot Attach to Host operation is being performed with Read/Write
Access selected.
By default, what does the Dell Unity XT system do before beginning the attach
process?
A. Creates a copy of the Snapshot
B. Detaches existing attached hosts from the LUN Snapshot tree
C. Detaches the host from the Snapshots of any other LUN
D. Creates a Snapshot of the LUN
Answer: A
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22.What are two features of a Dell UnityVSA Professional Edition license?
A. Professional Edition is covered by Dell support.
B. Applicable for Test and Development environments.
C. Supports UnityVSA Dual-SP HA deployment.
D. 4 TB maximum capacity
Answer: AC
23.What is a connectivity rule for a host that connects to multiple Dell Unity XT
systems?
A. The iSCSI protocol is required when host connects to multiple arrays.
B. The host can connect to different arrays with different protocols.
C. CNA connections to the host must be used with alternating protocols
D. The host must connect to all the arrays using a single protocol.
Answer: B
24.Which are two characteristics of Dynamic Pools? (Select 2)
A. All storage pools on the supported storage systems are dynamic pools by default.
B. They can only be Single Tiered on the HFA systems.
C. Dynamic Pools are supported on all physical Dell Unity XT models.
D. Four drives of spare space per 32 drives are used when creating a dynamic pool.
Answer: AC
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25.A storage administrator wants to have frequent snapshots of a LUN during
production hours
What is the minimum frequency configurable for a snapshot schedule of the LUN?
A. 2 hours
B. 15 minutes
C. 30 minutes
D. 1 hour
Answer: D
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26.A system administrator wants to limit I/O for the following LUNs:
- LUN A: Size 100 GB, Limit:500 IOPS
- LUN B: Size 500 GB, Limit: 1000 1OPS
- LUN C: Size 500 GB, Limit: 500 1OPS
- LUN D: Size 1000 GB, Limit: 1000 1OPS
What type and number of host I/O limit policies must be used?
A. One shared absolute limit policy
B. Two absolute limit policies
C. One absolute policy and one density based limit policy
D. Two density based limit policies
Answer: B
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27.A storage engineer must restore a LUN snapshot using a previous copy.
What is the correct sequence of steps?
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Answer:
Quiesce host I/O
Disconnect the host from the LUN
Detach any hosts from LUN snapshots
Select “Snapshot Restore
System creates a snapshot of the current LUN data state
LUN is restored to the selected snapshot’s data state
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28.What are two recommendations for configuring synchronous replication on a Dell
Unity XT system? (Select 2)
A. Session RPO must be set to zero
B. Dataset to be less than 100 TB
C. Latency below 10 milliseconds
D. A maximum of 100 km (60 mi) distance
Answer: CD
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29.What is the recommended configuration for iSCSI connections to ensure
continuous access to the Dell Unity XT storage system in the event of a failover?
A. Set up iSCSI interfaces on the same port of each SP and configure advanced
static routes for the interfaces.
B. Create iSCSI interfaces on network ports on different SPs that are combined into a
FSN logical device.
C. Create iSCSI interfaces on different network ports on the same SP that are
combined into a link aggregation.
D. Set up iSCSI interfaces on the same port of each SP and leverage the host-based
multi-pathing software.
Answer: D
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30.On a Dell Unity XT file system asynchronous replication session, how many
system Snapshots are required to support replication?
A. 1
B. 4
C. 8
D. 2
Answer: B
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