Dell PowerScale Design 2023 Exam D-PSC-DS-23 Dumps Questions

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Full version: D-PSC-DS-23 Exam Dumps Questions
1.A customer plans to consolidate 200 TB of digital images and video content. Performance is
important for recently created files. However, the customer wants any content that has not been
accessed within 30 days to be stored in the cluster at a much lower cost because performance is no
longer critical.
Which Isilon configuration should be recommended?
A. X-Series nodes, NL-Series nodes, and SmartPools
B. X-Series nodes and SmartQuotas
C. S-Series nodes, X-Series nodes, and SmartPools
D. NL-Series nodes and SmartLock
Answer: A
2.Following Dell best practices, at what capacity consumption should an organization begin the
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process of ordering more nodes to add to a cluster?
A. 80%
B. 85%
C. 75%
D. 70%
Answer: A
3.In OneFS, what is the largest number of disks in a subpool?
A. 234
B. 256
C. 468
D. 864
Answer: B
4.An eight node F900 PowerScale cluster running OneFS 9.4.0 has a dedicated subnet and IP pool
for SMB data traffic. SmartConnect Advanced license is applied. The SMB IP pool consists of LACP
aggregated 100 GbE interfaces from all the nodes.
What is the maximum number of SmartConnect Service IPs recommended for the SMB subnet?
A. 8
B. 1
C. 4
D. 6
Answer: D
5.Which service daemon is used by FTP and FTPS to transfer files to and from the cluster?
A. sftpd
B. ftpsd
C. ftpd
D. vsftpd
Answer: D
6.A PowerScale administrator has a cluster containing four F600 nodes. They must configure FTP
connections for anonymous access that requires no authentication.
What is the result of this configuration?
A. The limit is 500 for FTP connections per cluster.
B. The limit is 500 FTP connections per node.
C. The limit is 200 FTP connections per cluster.
D. The limit is 200 for FTP connections per node.
Answer: D
7.When designing an Isilon cluster for content creation workflows in the Media and Entertainment
(M&E) vertical, what type of workflows must you consider?
A. Random access
B. Batch
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C. Small file
D. Sequential
Answer: D
8.You need to gather information in order to design an Isilon solution.
What are included in the Top 10 qualification questions?
A. Required capacity, applications in use, desired protocols, and growth rate
B. Current infrastructure, desired protocols, CapEx/OpEx preference, and growth rate
C. Current infrastructure, applications in use, desired protocols, and company turnover
D. Required capacity, average file size, growth rate, and network supplier
Answer: D
9.A large financial services company requires a capacity expansion for retaining over 2.5 PB of
document images as a cold archive.
Which Isilon node series should be recommended?
A. HD400 Series
B. NL410 Series
C. X210 Series
D. X410 Series
Answer: A
10.You are designing an Isilon 5-node cluster configuration for a customer who wants to store user
home directories on the new cluster. Each user has 100 small files of 4KB each, 100 medium sized
files of 80KB each, and 100 larger files of 512KB each.
How much space is occupied by the medium sized files data blocks on an N+1n cluster?
A. 9,600KB
B. 15,360KB
C. 16,000KB
D. 25,600KB
Answer: A
11.A potential customer has a requirement for 4 PB of usable capacity to store media files. Their data
center has limited physical space, so efficient use of that space is important. However, the customer
is concerned about using 3 TB or larger drives because of rebuild times.
How does an Isilon cluster address this customer's concern?
A. Drive recovery takes the same amount of time regardless of drive size
Short-stroking 4 TB drives to reduce drive seek and access time
B. Proactive hot sparing eliminates most drive rebuilds
Endurant Cache reduces the overhead during drive rebuild operations
C. Nodes have more drives per rack unit
Proactive hot sparing eliminates most drive rebuilds
D. OneFS protects data rather than rebuilding drives
Splitting drives into failure domains reduces risk
Answer: D
12.Your customer manages a print media environment, consisting of three Isilon clusters, which are
out of support. The customer would like to have access to new software releases and feature sets.
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You have been asked to perform a full discovery of the customer's environment.
The customer’s current Isilon clusters are as follows:
“Cust” (12 x 12000X) serves as upload media storage for different tenants.
“Working” (8 x 12000X + 6 x X200) serves as a working zone for extraction to RAW and printing
media from it.
“Archive (16 x 72NL + Accelerator nodes) is used to store printed content for six months.
The customer operates in a Windows environment using SMB 2.0, two DNS servers per AD forest,
three forest domains which are servicing three different environments. All servers are operating on a
1Gb network, three VLANs segregating the DEV/QA/PROD environments. Currently, there is no
monitoring in place for performance measurement or optimization.
The requirements for this solution include:
- Better ROI and TCO
- Maintain same performance with possible improvements
- Renew HW/SW and get inclusive support
- Limit migrations
- Reduce space, power, cooling consumption
- Get new feature sets
- If migration required, use Parallel copy (multiple nodes, multiple threads multiple connections)
- Segregate tenant shares from other tenants
- Expand up to 1PB of total storage
What would you recommend be done to consolidate the three clusters into one?
A. - Expand the largest and most I/O intensive cluster using SmartFail
- Consolidate the remaining two clusters using Multithreaded version of RoboCopy
- Modify A-Record and propagate to all DNS servers to point to the new cluster
B. - Leave the clusters as is
- Upgrade drive sizes to meet the customer requirements
C. - Expand the largest and most I/O intensive cluster using SmartFail
- Consolidate the remaining two clusters using SyncIQ
D. - Build a new cluster for consolidation
- Use SnapshotlQ to migrate the existing data onto the new consolidated cluster
- Spoof DNS to point to the new cluster
Answer: C
13.A North-American based customer has an existing six node A2000 cluster installed in a Titan-HD
rack, using ten rack units. The customer would like to add a new F800 node tier to their cluster. Their
data center uses under-floor cooling and single-phase power.
What is a consideration when installing the F800 nodes?
A. The F800 nodes will not fit in a Titan-HD rack.
B. Two F800 nodes can be added to the open node slots.
C. Step-up transformers are required.
D. A2000 backend ports are incompatible with the F800.
Answer: C
14.In your second meeting with the customer you ask the following questions about their current
unified SAN and NAS platform. "Are you using an application to map users from NFS Exports to SMB
shares? Is each site a separate LDAP or AD Domain?"
What functionality are your trying to understand in their environment and what is the comparable
feature in Isilon OneFS?
A. Identity Mapping and Authentication Sources
B. User Management and AD Authentication
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C. Kerberos Infrastructure and Identity Management
D. NFS Export Management and OneFS Cluster ManagementAnswer: A
15.We have been engaged by a research hospital to help upgrade their Isilon installation. They
currently have 12 previous generation Isilon nodes with 200 TB of capacity and run on a 1 Gbps
network.
They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would
like to expand Isilon to 2 PB of active data and 1 PB of archive data. They use a third party data and
metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used
for analysis work with the HPC cluster.
The customer will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to
add per month?
A. 9.6 TB
B. 4.8 TB
C. 1.2 TB
D. 14.4 TB
Answer: A
16.On Isilon Gen 6 nodes, what is used to store the peer journal copy?
A. Shared SSD
B. M.2 drive
C. Shared NVRAM
D. Shared cluster disks
Answer: A
17.A customer has a 2 GB file that is tiered to the cloud by CloudPools. The Isilon cluster is running
OneFS 8.1.2. Approximately how many cloud data objects will be created for this file?
A. 1,024
B. 2,048
C. 4,096
D. 16,416
Answer: B
18.A customer is evaluating PowerScale and NetApp FAS solutions. They are storing many unique
files and want to understand how each solution deduplicates data.
What is the difference between how PowerScale and NetApp FAS deduplicate data?
A. PowerScale uses separate deduplication at the volume level.
NetApp FAS uses global deduplication across the cluster.
B. PowerScale uses global deduplication across the cluster.
NetApp FAS separates deduplication at the volume level.
C. PowerScale does not have deduplication.
NetApp FAS uses local deduplication.
D. PowerScale uses local deduplication.
NetApp FAS does not have deduplication.
Answer: B
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19. NL108
20.A customer has a cluster running with a single access zone and serves multiple internal
departments. The clients access the cluster over both SMB and NFS protocols. A department user
has been assigned the task of auditing SMB activity and enforcing appropriate quotas for certain
users.
How should the cluster administrator grant this access?
A. Create a secondary root account credential
B. Create a custom RBAC role
C. Provide the AuditAdmin RBAC role
D. Provide the SecurityAdmin RBAC role
Answer: A
21.A large hospital organization is looking for a vendor neutral archive solution for their imaging data.
When proposing an Isilon solution, which benefits should be discussed?
A. Consolidation of imaging applications and ability to switch PACS systems
B. Deduplication of image data and Data at Rest Encryption
C. Data at Rest Encryption and high performance storage platform
D. Consolidation of imaging applications and global namespace acceleration
Answer: A
22.In a cluster with N+2 protection, which type of object would be triple mirrored automatically when
written to the OneFS file system?
A. All files smaller than 128 KB
B. All files smaller than 512 KB
C. All files smaller than 256 KB
D. All files smaller than 1 MB
Answer: A
23.A customer needs to consolidate 300 TB of home directory servers and shared file systems used
by development and test groups. A key requirement is to prevent the systems from consuming all free
capacity and impacting home directory content.
Which Isilon node configuration should be proposed?
A. X-Series with SmartQuotas
B. NL-Series with SmartQuotas
C. S-Series with InsightIQ
D. X-Series with SmartPools
Answer: A
24.A large manufacturing company is an existing Isilon customer with a cluster consisting of four
NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows
that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the
remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac
clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an
engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400
UNIX workstations that produce technical drawings which are currently stored on another vendor's
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SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do
not currently use DNS or LDAP. The engineering company has an old storage system that has been
experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO
would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid
adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte,
and SugarSync. They would like to implement an alternative that provides external file sharing and
mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They
would like to limit the amount of capacity that each user can consume in their home directory and
want to ensure you provide the capability to easily visualize which users are over their allotment. The
company's Windows users currently leverage Windows Shadow Copy to recover files that have been
accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have
the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their
home directories and shared folders. They are concerned that Isilon cannot scale to support their
combined requirements.
The customer provides the following environment summary from the engineering firm's recently
departed IT staff:
- 20 TB of Home Directory data
- 100 TB of active CAD projects
- 400 TB of archived data stored on tape at an offsite warehouse
What steps would you recommend to the IT Director to allow for collaboration between the
engineering company and the manufacturing company?
A. Set up Access Zones on the Isilon cluster using Active Directory (AD) and NIS authentication.
Create directories and apply user group permissions from AD and NIS for each collaboration team.
B. Repoint the engineering users to the Active Directory controller
Add the users to the appropriate Active Directory security group.
C. Upload a collaboration user csv file into the cluster with usernames and passwords for the
collaboration directory.
D. Create a new pool for use by the collaboration users.
Set up Access Zones on the Isilon cluster using AD and NIS authentication.
Answer:
25.You meet a customer for the first time. They explain that their current environment for NAS does
not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?
A. Where will the data center be installed?
B. How many concurrent clients are accessing your NAS?
C. How many users are in your Directory Services?
D. Are you currently using a UPS for your main power source?
Answer: B
26.What are the available Usermapper roles?
A. Primary, Secondary, and Client
B. Primary, Local, and Remote
C. Local, Remote, and Client
D. Active, Passive, and Standby
Answer: A
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27.You are adding a new node to an existing cluster.
What OneFS function should you use to remove the old nodes from the cluster?
A. SmartFail
B. SyncIQ
C. AutoBalance
D. SmartPools
Answer: A
28.Refer to the exhibit.
Your customer has three different clusters. File systems on two of the clusters are at 90% full, and the
largest cluster is 10% full. Active data resides on the largest cluster. The customer has five different
node types totaling 2PB and 54 nodes.
Nodes from left to right are as shown:
29.Acustomer is evaluating Isilon and Pure FlashBlade solutions.
Which protocol is available for both solutions?
A. NFSv3
B. SMBv3
C. FTP
D. HDFS
Answer: C
30.Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business
model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 65%
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utilized for their video surveillance operations.
They wish to achieve the following:
Upgrade from 1280 x 720 resolution, with a 15 days retention policy, to 2048 x 1536 resolution with a
30 days retention policy.
What is the minimum number of nodes of the same type will you need to add in order to meet the
required changes and not exceed 70% raw capacity?
A. 6 nodes
B. 10 nodes
C. 14 nodes
D. 18 nodes
Answer: A
31.You are asked to size a cluster for a file sharing environment. nfsstat indicates that 75% of the
requests are namespace operations (e.g., GETADDR, SETADDR). There will be 8,000 active Linux
users, connecting over NFS.
Which cluster configuration would you recommend?
A. Five X400 (66 TB) 48 GB RAM, 1.2 TB SSD, N+2:1
B. Eight X200 (27 TB) 12 GB RAM, 600 GB SSD, N+2
C. Eight X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
D. Eight X200 (36 TB) 48 GB RAM, no SSD, N+2:1
Answer: C
32.On an Isilon cluster consisting of eight H500 nodes running OneFS 8.2.1, which type of
deduplication is used to maximize storage efficiency?
A. Post-process
B. Extent-based
C. In-line
D. Target-based
Answer: A
33.A customer has an SMB file directory with 375 TB of data on the primary cluster with a protection
level of N+3:1. They want to replicate this directory to the secondary cluster. They are interested in
the possibility of setting protection levels on the target cluster.
Which target directory protection level information can be provided?
A. Does not need to match the source and is configured separately on the target cluster.
B. Must match the source and is configured separately on the target cluster.
C. Cannot be altered and is controlled by SyncIQ.
D. Can be altered by the command line interface and is controlled by SyncIQ.
Answer: A
34.What method does the MediaScan job leverage to locate and clear media-level errors?
A. MD5
B. FEC
C. SHA256
D. CRC
Answer: D
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35.You meet a customer for the first time. They explain that their current environment for NAS does
not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?
A. What protocols are accessing your NAS?
B. What application are you using to create directories?
C. Is your datacenter ISO9001 compliant?
D. How many users are in your Directory Services?
Answer: A
36.A customer is looking for a NAS solution to support their read-intensive application.
This solution must meet the following requirements:
- 1000 users
- Aggregate bandwidth of 5 GB/s
- 500 TB of user data
- Typical latency of 5 ms.
The files are distributed evenly across 10 directories.
Which cluster configuration would best meet these requirements?
A. Seven X400 (108 TB) nodes with no SSD
B. Eight NL400 (96 TB) nodes with 1.6 TB SSD
C. Eight X400 (96 TB) nodes with 1.6 TB SSD
D. Twenty-five X200 (30 TB) nodes with 800 GB SSD
Answer: B
37.A customer has 10 nodes in a cluster using N+2 protection.
What is the minimum number of nodes required to be online and in communication with one another
to satisfy quorum?
A. 4
B. 5
C. 6
D. 7
Answer: C
38.Which SmartConnect policies are used for workloads that have short lived connections such as
HTTP and FTP?
A. Connection count and round robin
B. Round robin and CPU usage
C. Throughput and CPU usage
D. Throughput and connection count
Answer: C
39.In an NFSv3 only environment, what is the recommended limit for active NFSv3 connections, per
Isilon node?
A. 500
B. 1,000
C. 1,500
D. 2,500
Answer: B
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40.You are asked to size a cluster for a file sharing environment. nfsstat indicates that no more than
10% of the requests are namespace operations (e.g. GETADDR, SETADDR). There will be 10,000
active Linux users, connecting over NFS.
Which cluster configuration would you recommend?
A. Ten X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
B. Five X400 (120 TB) 96 GB RAM, 2.4 TB SSD, N+2
C. Ten X400 (60 TB) 48 GB RAM, 2.4 TB SSD, N+2:1
D. Eight X200 (36 TB) 24 GB RAM, no SSD, N+2:1
Answer: A
41.An Isilon storage administrator is concerned about capacity after ingesting 200 TB of file data.
They recently added more nodes to the cluster and now want to auto-balance it as soon as possible.
The cluster utilization percentages for an average 24-hour period are:
- 45% during 00:00 - 08:59
- 60% during 09:00 - 17:00
- 85% during 17:01 - 23:59
The administrator wants to keep cluster utilization at a minimum.
Which Impact Policy settings should be used to quickly complete the job without impacting the
production workload?
A. Medium, Low, Low.
B. Medium, Medium, Low.
C. High, Medium, Paused.
D. High, High, Low.
Answer: B
42.A customer is experiencing problems writing data to their PowerScale cluster. You have checked
all network settings and authentication sources. No errors are reported on the cluster.
Which command can the customer use to collect information about network activity, network packets,
and network latency?
A. netstat
B. iostats
C. tcpdump
D. isi statistics
Answer: C
43. X200
44.Which level of control does RBAC provide for cluster administration roles?
A. Object level restrictions
B. Domain specific restrictions
C. Activity level restrictions
D. Activity and object level restrictions
Answer: A
45.There is a need to carry out a tech refresh of a PowerScale cluster. Old nodes must be removed
because they will soon be at end of service life.
What methodology is least disruptive and will retain the file system structure, configuration, data, and
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DNS information?
A. Add the new nodes to the cluster and use SmartPools to move the data to the new nodes
B. Install the new nodes into the cluster and migrate using a host-based utility
C. Install the new nodes as a new cluster and use SyncIQ to replicate the data to the new nodes
D. Install new nodes into the cluster and use SyncIQ to replicate the data from the old to the new
nodes
Answer: A
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