You are doing performance analysis on a VNX5100 that is configured with three virtual pools. You
determine that FAST Cache would benefit overall performance. Why are you unable to configure
FAST Cache on the array?

A customer wants your help in deciding if their existing VNX array can be used to do back up to
disk, instead for tape backups.
The customer has a unified VNX that is fully populated with 125 disks. When looking at analyzer
data for the array, you see that it has a consistent utilization of over 70% on both SPs.

According to EMC best practices, what do you recommend to your customer?

You are planning a technical refresh of a customer’s CLARiiON storage array to a VNX. They
have stated that the CLARiiON seems to perform slowly and believe that they require additional
disk spindles to satisfy their performance requirements.
What utility should you use to investigate performance trends?

Your customer has established a new virtual pool of storage containing NL-SAS drives in a RAID 5
configuration. Recently they have noticed that performance on the entire array is affected between
1:00AM and 4:00AM.
What information would best indicate the root cause?

You are reviewing log files for a customer’s application using Analyzer, and note the following:
NFS write size is 8 KiB LUN
Write size is 8 KiB
Disk write size is 32 KiB
You can see that LUN write sizes are identical at 8 KiB.
Why is the application not writing at 32 KiB?

A customer is troubleshooting performance issues on a newly implemented VNX array. They have
asked you how to check LUN SP ownership and the performance of individual disks.
Which tool would you recommend?

Refer to the exhibit.

A customer is analyzing the size of data sent to disk. Which command generated the output?

You are reviewing a NAR file and notice that a LUN has a write cache hit ratio of 0.0.
How can you tell if write cache is enabled for the LUN?

Your customer is designing a newly purchased VNX with 30 NL-SAS drives. The customer’s
requirements in order of priority are 1) data availability and 2) performance.
What RAID type do you recommend?

During a customer data gathering meeting, a discussion about applications was presented. Most
of the applications will best be suited for a RAID 5 pool on the VNX. However, one of the
applications has an I/O requirement for RAID 1/0 spindles.
How should the RAID 1/0 application requirement be handled?