VNX Solutions Expert Exam for Technology Architects v9.0

Refer to the exhibit.

You have designed a VNX for File implementation for a customer data environment that involves a high level of data duplication. The customer is concerned with disk efficiency, and you have designed the system with the minimum number of disks necessary to meet expected storage needs after deduplication.
The customer is initially pleased with the implementation. The decision is made to add a cycle of SnapSure Checkpoints for backup and recovery purposes. Within weeks, deduplication automatically aborts.
What would you recommend to get deduplication working again?

If an SP fails within a VNX system, how many drives can the surviving SP address at the same time if array ports 0 and 2 are used?

A customer has a VNX system to provide storage for a VMware Cluster with five ESX hosts. Each ESX host has one dual-port FC HBA connected to two FC switches. They are using VMware native failover functionality for high availability and load-balancing.
The customer requires higher availability for the ESX host connectivity to the storage system.
What would you recommend to the customer?

Your customer has a new VNX solution configured with Flash, SAS, and NL-SAS drives.
The customer requires their DSS, VDI, Software Development, and Regulatory Compliance workloads to be distributed between the different drive types. Due to limited drive quantities only one workload type can be configured using Flash drives.
According to best practices, which configuration best assigns the workloads?

Your customer wants to enable file deduplication on an existing data-populated VNX for
File system, based on the following specifications:
-> Moderately busy file system scan rate: 500 files per second
-> Moderately busy file system ingest scan rate: 5 MB/sec
-> Number of files: 1 M
-> Average file size: 50 KiB
-> Estimated deduplication: 30%
How long will the initial deduplication take to complete?

A customer has a VNX system to provide storage for a VMware 4.1 Cluster with four ESX hosts. The ESX hosts are running Exchange servers and other application servers. The customer is using a virtual machine as a Replication Manager. A VMware proxy host is used to get crash-consistent replicas for the Exchange mail stores.
Which volume access type is recommended for the Exchange servers?

A customer has deployed a new application on a host using VNX storage. The new application I/O size is 512 KiB, has a 50/50 read-write ratio, and its write behavior is sequential and bursty. All other host applications are characterized by 4 KiB I/O random writes.
The customer has noticed degraded overall VNX performance during write bursts, which is caused by the new application. Your analysis reveals a high rate of forced flushing, as well as significant CMI congestion.
What can you recommend to improve overall VNX performance?

A Storage Administrator with a VNX Unified solution is using the CLI to monitor daily storage performance. They must type long commands to examine the statistical types and names to get the desired results. You have been asked to make statistical groups to accelerate and ease the demanded monitoring tasks.
Which command must be used to accomplish this job?

A VNX storage system is being configured to provide storage for an Exchange 2010 implementation for 2,000 users. Performance and reliability are more important than cost for the customer.
What RAID configuration should be used?

A clone source LUN is 1 TiB in size. It performs 450 random 8 KiB IOPs with a 2:1 R/W ratio. As part of ongoing testing, the clone is fractured for five minutes and then resynchronized. The testing is performed every hour.
How much data (to the nearest GiB) is read from the source LUN as part of the resynchronization process?

Your customer has a new VNX solution configured with Flash, SAS, and NL-SAS drives.
The customer requires their OLTP, VDI, Software Development, and Regulatory
Compliance workloads to be distributed between the different drive types. Due to limited drive quantities only one workload type can be configured using Flash drives.
According to best practices which configuration best assigns the workloads?

Your customer has a single threaded legacy application with a sequential write workload.
They are currently performing a storage technology refresh. They ask you to architect a solution using VNX systems configured with NL-SAS, SAS and Flash drives.
Which drive and RAID protection should they use for the legacy application?

Your customer has implemented FAST Cache and FAST VP in their application environment. They have been monitoring drive performance, and have noticed that their
Flash drives display increased latency as they become full.
Which process can cause the slowdown?