Ultimate Guide to Prepare E20-393 with Accurate PDF Questions [Mar 09, 2022]
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NEW QUESTION 74
A storage administrator performs a monthly performance analysis of a Dell EMC Unity XT storage array using CloudIQ 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 IOPS compared to the two previous months.
What is a possible root cause of the spike in IOPS?
- A. Host IO limit of Test_LUN was edited and the limit was increased by 1000 IOPS
- B. Another Absolute Host IO limit policy with additional 1000 IOPS was set on Test_LUN
- C. Test_LUN was expanded by 100 GB and a Density-based Host IO limit policy was set only for Test_LUN
- D. Test_LUN was expanded by 100 GB and a Density-based Host IO limit policy was set for all three LUNs
Answer: A
NEW QUESTION 75
In UnityVSA, which license(s) is able to extend the storage capacity from 25 TB to 50 TB with an upgrade path license?
- A. VVOLS only
- B. Professional and VVOLS
- C. Community
- D. Professional only
Answer: D
Explanation:
Explanation/Reference:
Professional Edition is a licensed subscription-based offering available at capacity levels of 10 TB, 25 TB, and 50 TB.
Incorrect Answers:
B, C: VVOLS is not a license for UnityVSA.
D: 4 Community licens is for 4 TB only. Community Edition is a free downloadable 4TB solution recommended for non-production use.
References: https://www.emc.com/collateral/TechnicalDocument/docu69362.pdf (page 3)
NEW QUESTION 76
Which step must be completed prior to performing the initial configuration of a UnityVSA system and creating the first storage pool?
- A. License the system for NFS and SMB support
- B. Create an ESXi host profile
- C. Install license keys for thin provisioning
- D. Add vDisks to the storage appliance
Answer: D
Explanation:
Explanation
UNITY VSA STORAGE POOL CREATION
1. Under the Storage Pool Section go to Pools. Select the + to start the "Create Pool Wizard".
2. Name the Pool
3. Assign a Tier to each Virtual Disk attached to the VSA. You have Extreme, Performance and Capacity.
Etc.
References: https://samshouseblog.com/2016/06/08/unity-vsa-storage-pool-creation/
NEW QUESTION 77
Which task must be performed on the storage system in order to access a file system read/write snapshot?
- A. Connect to the NFS/SMB share of the snapshot
- B. Configure the NFS/SMB share to the file system snapshot
- C. Configure Host Access to the LUN snapshots
- D. Perform the snapshot "Attach to Host" operation
Answer: B
Explanation:
Explanation/Reference:
Read-write snapshots can be made available to hosts as separate shares.
The Shared property is applicable to file snapshots only, and indicates whether the snapshot is currently available to clients as a share. The default value is No, and changes to Yes when the read-write file system snapshot is used to create shares. For read-only file system snapshots, this property is always set to No.
Share - A named, mountable instance of file-level storage, accessible through a file system or VMware NFS Datastore. Each share is accessible through the protocol (NFS or SMB) defined for the file system where it resides.
NEW QUESTION 78
A company with multiple remote offices has decided to use asynchronous replication. What systems support this capability?
- A. Dell EMC UnityVSA and VNXe
- B. Dell EMC UnityVSA only
- C. Dell EMC Unity XT only
- D. Dell EMC Unity XT and Dell EMC UnityVSA
Answer: D
Explanation:
Explanation/Reference: https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h15088- dell_emc_unity-replication_technologies.pdf
NEW QUESTION 79
What describes the LUN Snapshot Copy operation?
- A. Parent cannot be a snapshot copyCan copy an attached or detached snapshotInherits the parent Snapshot
Retention Policy - B. Parent cannot be a snapshot copyCan only copy a detached snapshotHas an independent Retention
Policy from the parent - C. Parent can be a snapshot copyCan only copy a detached snapshotHas an independent Retention Policy
from the parent - D. Parent can be a snapshot copyCan copy an attached or detached snapshotInherits the parent Snapshot
Retention Policy
Answer: C
Explanation:
Explanation
Note: You can create copies of LUNs by cloning LUNs from the Snapshot copies in a volume. These
FlexClone LUNs are readable and writable copies of the LUNs as the LUN existed when the Snapshot copy
was created. Before you can clone a LUN, you must create a Snapshot copy (the backing Snapshot copy) of
the LUN you want to clone.
References:
https://library.netapp.com/ecmdocs/ECMP1368845/html/GUID-E0660F7B-491B-4AA0-A1A8-22B12DC6917D
NEW QUESTION 80
A storage administrator is required to test a new version of an application loaded on a secondary host. The administrator must use existing data contained on a LUN provisioned from Unity to a primary host.
Which solution will meet the requirement and provide space efficiency?
- A. Create a Synchronous Replication session for the LUN
Configure access to the replica LUN for the secondary host
Attach the secondary host - B. Create an Asynchronous Replication on session for the LUN
Configure access to the replica LUN for the secondary host
Attach the secondary host - C. Create a snapshot of the LUN
Configure LUN access for the secondary host
Attach the snapshot to the secondary host - D. Create a snapshot of the LUN
Configure snapshot access to the LUN for the secondary host
Attach the snapshot to the secondary host
Answer: D
Explanation:
Explanation/Reference:
Explanation:
Attaching a snapshot is only applicable for block snapshots, and makes the snapshot available for host IO. A host must have Snapshot access or LUN and Snapshot access configured in order to access the snapshot.
When a snapshot is attached, Unisphere provides the option to create a copy of the snapshot in case the administrator wants to preserve the current snapshot view for future use.
NEW QUESTION 81
A company has the following available drive types in their Dell EMC Unity 500 storage array:
* 1.2 TB SAS
* 2 TB NL-SAS
* 100 GB SSD
* 1.6 TB SSD
* 3.8 TB SSD
What combination of drives can the company use to create a storage pool?
- A. 2 TB NL-SAS and 100 GB SSD
- B. 1.2 TB SAS and 1.6 TB SSD
- C. 2 TB NL-SAS and 3.8 TB SSD
- D. 1.6 TB SSD and 3.8 TB SSD
Answer: C
Explanation:
Explanation
NEW QUESTION 82
What technology is used by Dell EMC Unity Snapshots?
- A. Copy on First Write, which requires no storage resource is needed to create a Snapshot, writes are
copied pool. - B. redirect on Write, which requires a storage reserved to hold original data that changed to preserve the
point-in-time view. - C. Copy on First Write, which requires a storage resource reserved to hold original data that changed to
preserve the point-in-time view. - D. Redirect on White, which requires no storage resource to create a Snapshot, writes are redirected on
parent pool.
Answer: B
NEW QUESTION 83
With Redirect on Write technology, when writes are made to the storage resource and more space is required, what size is the slice allocated from the parent pool?
- A. 64 KB
- B. 8 KB
- C. 256 MB
- D. 128 MB
Answer: C
NEW QUESTION 84
A user is having difficulty troubleshooting a Unity storage system and the service provider has been contacted for assistance. The service provider needs to run some service commands on the Storage Processors to troubleshoot the issue further.
Which step must be taken to allow the service provider remote access to the storage system?
- A. Specify the Remote Logging configuration
- B. Enable SSH on the storage system
- C. Set the Unisphere preferences to "Optimize" for remote access
- D. Specify the SMTP configuration
Answer: A
Explanation:
Explanation/Reference:
The Service Tasks tab provides tools to service the storage system, including repair and troubleshooting.
You can use this page to collect system and configuration information for assisting your service provider with a service request. The service password is required to access the various service task operations.
The Technical Advisories tab displays up-to-date information about advisories specific to the system by referencing knowledge base articles. The Logs tab displays an audit log for system events. It also allows users to configure a remote host to which to send log information and lets users export logs into a CSV file for additional reporting purposes.
References: https://www.emc.com/collateral/white-papers/h15085-emc-unity-unisphere-overview.pdf (page
14)
NEW QUESTION 85
What determines the fault characteristics of a disk group?
- A. Drive speed
- B. Drive type
- C. D@RE
- D. Stripe width
Answer: D
NEW QUESTION 86
A storage administrator is creating a host profile in Unisphere to provide host access to block storage resources using the iSCSI protocol. The host initiators were not automatically discovered and must be manually added.
In addition to the SAN host IQN, what other configuration can be performed through the "Create iSCSI Initiator Wizard" window?
- A. Enable and disable CHAP settings
- B. Create Mutual CHAP secret
- C. Enter CHAP username and secret
- D. Create Global CHAP secret
Answer: C
Explanation:
Explanation/Reference:
Explanation:
A sample from a Broadcomm BIOS is provided in the figure below, illustrating the IQN assignment for the VNX iSCSI target.
References: https://www.emc.com/collateral/hardware/technical-documentation/h8229-vnx-vmware-tb.pdf (page 34)
NEW QUESTION 87
When creating a NAS Server replication session, which settings are required for the destination NAS Server?
- A. Pool, RPO, and Storage Processor
- B. Name, Pool, and Storage Provisioning
- C. Interface configuration, Pool, and Storage Processor
- D. Name, interface configuration, and RPO
Answer: B
Explanation:
Explanation
References: https://www.emc.com/dam/uwaem/documentation/unity-p-replication-config.pdf
(30)
NEW QUESTION 88
Refer to the exhibit. Where is the management port located on the Unity Storage Processor?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 89
What block size do Dell EMC Unity systems use to copy highly accessed blocks of data from spinning drives into FAST Cache?
- A. 64 KB
- B. 32 KB
- C. 128 KB
- D. 16 KB
Answer: A
Explanation:
Explanation/Reference: https://www.emc.com/collateral/white-papers/h15086-emc-unity-fast-technology-overview.pdf (2)
NEW QUESTION 90
What can be used to initially configure a static management IPv6 address on a Dell EMC Unity array?
- A. uemcli
- B. symcli
- C. navisecCLI
- D. initCLI
Answer: A
Explanation:
https://www.dellemc.com/en-us/documentation/unity-family/unity-p-cli-user-guide/03-unity-cli-br- configure-network-communication.htm
NEW QUESTION 91
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