Free EMC D-PSC-DS-23 Exam Dumps Questions & Answers

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.  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.
• B.  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.
• C.  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.
• D.  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.

When conducting high-level interviews with stakeholders of a project, what are the key questions that should be asked?

• A.  How much usable storage are you looking for? What client OS will access this storage? Which applications will access this storage?
• B.  What does your network architecture look like Do you have existing NAS infrastructure? Do you have
  10Gb or 1Gb Which applications will access this storage?
• C.  Who are the application owners? How much usable storage is needed? What applications will be accessing the storage? How many users are in your Active Directory?
• D.  Which backup application is in use today? What is your change rate? How many clients will connect to the cluster?

In an 18 node Isilon cluster with the default protection setting, what is the layout of a 128 KB file?

• A.  N+3d:1n
• B.  3x mirrored
• C.  2x mirrored
• D.  N+2d:1n

A customer is looking for a new storage solution to handle their growing storage requirements. The system should be able to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month.
In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.
The customer is looking for a solution that would provide good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.
Which recommendation will meet the customer's requirements?

• A.  VMAX with FAST VP and a NAS Gateway
• B.  Isilon cluster and scale-out as required
• C.  VNX Unified platform with FAST Cache
• D.  Isilon for file system data, and a VNX for DB and VMware workloads

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:
1. X200
2. 12000X
3. 36000X
4. NL108
5. 108NL
They have a Smartpool license and believe that tiering data would help free up needed space.
After talking with the customer and explaining the use of SmartPools, how would you recommend optimizing utilization across all of the nodes that the customer owns?

• A.  Borrow nodes to reconfigure the cluster and migrate the data to new cluster.
• B.  Go to GUI and put alike nodes in the same pools. Then name them.
• C.  Attach all nodes to a common Infiniband switch.
• D.  Explain to the customer that this will result in data loss.