D-PSC-DS-23無料問題集「EMC Dell PowerScale Design 2023」

質問 1

A potential customer requires 4 PB of usable capacity to store media files. The workloads are a combination of streaming video delivery and long term archive of video assets.
There is very little space available in the customer's datacenter, so physical density is very important.
The customer is concerned about performance impact and potential data loss when using 3 TB or larger drives.
What Isilon capabilities can address the customer's concerns?

（A）Isilon nodes have more drives per rack unit so fewer shelves are required.
Proactive hot sparing eliminates most drive rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.

（B）Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Data redistribution runs faster with more nodes in the cluster.

（C）Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.
Data recovery is consistent, taking the same amount of time regardless of cluster size.
Isilon 'short strokes' 4TB drives to reduce rebuild time.

（D）N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Proactive hot sparing eliminates most drive rebuilds.
Endurant Cache reduces the overhead for write operations.

正解：B 解答を投票する

質問 2

For concurrent I/O, how do SmartCache and Endurant Cache differ?

（A）Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache

（B）SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file

（C）SmartCache immediately commits the write to NVRAM on the local node and one peer node

（D）Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM

正解：D 解答を投票する

質問 3

How is data spread across multiple nodes as during a write on a PowerScale cluster?

（A）FEC stripe unit

（B）Protection policy

（C）Storage pool

（D）Protection group

正解：A 解答を投票する

質問 4

What do you need to take into consideration when planning a job schedule?

（A）Up to three jobs can run at the same time. Multiple restripe or mark job phases cannot safely and securely run simultaneously without interfering with each other and without risk of data corruption.

（B）Up to three jobs can run at the same time. Multiple restripe or mark job phases can safely and securely run simultaneously without interfering with each other and without risk of data corruption.

（C）Multiple restripe category job phases and one-mark category job phase can run at the same time.

（D）Any three other jobs can run at the same time and they can run in conjunction with restripe or mark job phases.

正解：D 解答を投票する

質問 5

A customer has 10 files that are each 10 MB in size. They created two clones of each file on their source cluster. They now want to use SyncIQ to replicate the original files and the cloned files to a target cluster.
Excluding protection overhead, how much disk space will the files use on the target cluster?

（A）600 MB

（B）300 MB

（C）100 MB

（D）200 MB

正解：C 解答を投票する

質問 6

What is an accurate statement when configuring an Isilon Gen 6 cluster with Compliance SmartLock?

（A）Failback of SmartLock compliance mode directories is not supported for Isilon Gen 6 clusters

（B）Compliance directories have a system clock that is set once and cannot be changed after being set

（C）SmartLock compliance directories can only be migrated from the recovery cluster

（D）Standard directories containing data can be converted to a Compliance SmartLock directory

正解：B 解答を投票する

質問 7

A company currently has multiple fileservers to provide home directories for its employees. Each department has a separate fileserver.
Most corporate users are on Windows clients and utilize Active Directory, except for the Engineering department, which uses Linux and NIS for authentication. The company is looking for a solution with minimal administrative overhead and a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?

（A）Configure a single Isilon cluster and utilize Access Zones for authentication to Active Directory and NIS.

（B）Configure two separate clusters, one for Windows clients and the other for Linux.

（C）Configure a single cluster, and migrate Linux users to Windows.

（D）Utilize SmartPools to create two different FilePools, and separate Windows users from Linux users.

正解：A 解答を投票する

質問 8

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）16,000KB

（C）25,600KB

（D）15,360KB

正解：B 解答を投票する

質問 9

A large retail customer is using their Isilon Gen 6 cluster to store receipts. The resulting workflow data consists of only small files.
What configuration change is recommended for this environment to reduce CPU overhead?

（A）Decrease the L3 cache on every node in the cluster

（B）Increase the L2 cache on every node in the cluster

（C）Set the requested protection level higher than the default

（D）Set the requested protection level as mirrored protection

正解：D 解答を投票する

質問 10

What is the maximum number of data stripes in a Gen 6 Isilon?

（A）20

（B）16

（C）128

（D）144

正解：C 解答を投票する

質問 11

A customer is collecting remote sensor data that must be maintained for future legal challenges. The data will rarely be accessed, and the customer wants to have minimum financial investment.
Which PowerScale node should be recommended for this purpose?

（A）A3000

（B）F900

（C）H7000

（D）F200

正解：A 解答を投票する

質問 12

A PowerScale cluster is configured with SmartConnect zones using dynamic IP address allocation.
Failback is enabled.
If there is a node failure, what happens to the IP address?

（A）IP address is moved to a new node, and the connection continues.

（B）IP address is moved to a new node, but the connection does not continue.

（C）IP address is no longer used, and a new connection must be made.

（D）The client must re-establish the connection to the node.

正解：A 解答を投票する

質問 13

What is the sector size of an Isilon 8 TB drive?

（A）512 bytes

（B）4096 bytes

（C）1024 bytes

（D）2048 bytes

正解：B 解答を投票する

質問 14

A customer has 1,000 at 2 KB files, 5,000 at 4 KB files, and 4,000 at 7 KB files. They want to know the total amount of space on disk with a requested protection level of N+2d:1n.
How much on-disk space will be consumed for the data and protection overhead, excluding metadata?

（A）~156 MB

（B）~146 MB

（C）~234 MB

（D）~164 MB

正解：B 解答を投票する

質問 15

What occurs when the ShadowStoreDelete job target efficiency of a chunk drops below 90%?

（A）Dedupe job is triggered to dedupe the chunk of data

（B）ShadowStore defragmenter moves all data to another shadow store location

（C）ShadowStoreDelete job creates a new shadow store

（D）ShadowStoreDelete job triggers the FlexProtect job and restripes the data

正解：B 解答を投票する

質問 16

An Isilon cluster has two ports configured per node. Each port is on a different VLAN. Although incoming traffic is evenly distributed, transmitted data from the Isilon uses one port more than the other port.
What could be the cause of this imbalance?

（A）A default gateway was not configured on both ports

（B）Source Based Routing is not enabled on the cluster

（C）Priority of the gateway in the less-used port set too low

（D）Static routes are configured on the less-used port

正解：A 解答を投票する

D-PSC-DS-23 無料問題集「EMC Dell PowerScale Design 2023」

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