You are working with a customer to design a VNX for Block solution for their SQL database.
They currently have a CX4-480. In the past they have co-located their database and log
files. In the new VNX design, the database will be placed in a FAST VP enabled pool. The
transaction logs will be placed on a traditional RAID Group. Your customer needs help
determining the number of IOPS they need to satisfy the needs of their transaction logs.
You know the following:
Transaction period: 8 hours (business day)
ThrougEMCut during transaction period: 240 GB
How many IOPS will the transaction log volume require?

A VNX storage system is being configured to provide storage for an Exchange 2010
implementation for 2,000 users. iSCSI will be used for connectivity between the servers and
the array. Each server has two, dual-ported NICs. Based on EMC best practices for
availability and redundancy, how should the interconnectivity be configured?

Your customer has LUNs with a total size of 20,000 GiB. The total I/O load is 15,000 IOPS,
with a 4:1 R/W ratio. Analysis of your customer’s data indicates that data skew is 90%. RAID
5 is used exclusively in the environment.
How many 200 GB Flash drives would be needed to handle the load of the working data
set?

A customer has recently implemented Microsoft Exchange 2010 on a VNX storage system
that hosts a variety of application servers. The Exchange implementation is currently using
RAID 5 striping metaLUNs across multiple RAID Groups. They are using FAST Cache for
the database volumes, but not FAST VP. Performance has been significantly diminished.
What would you recommend to the customer?

A customer is using a virtualized environment with a large number of NFS datastores
presented from a VNX system. They are experiencing more than expected network traffic on
their datastore networks. What recommendation would you make to your customer?

A customer recently added a large number of new users to their VNX for Block storage
system. They now complain that the system is slow. You have been asked to fix this
problem. Their configuration uses traditional LUNs exclusively. They have a number of Flash
drives that are currently unused. Analysis of their application environment shows that several
LUNs have skew > 90%. Which technology would you implement to solve their performance
problem?

A customer is running a data warehouse server with dual HBAs connected to a SAN . A
performance analysis of the server shows high utilization. This server needs to be backed up
to a SAN-attached backup device. The customer is concerned about production
performance while backing up the data.
Which solution should be proposed?

A customer has implemented your VNX for File design for a high-performance CAD/CAM
application. The design specified several NFS clients, each accessing a single file system in
a single-threaded manner. You need to guarantee that each file system resides on an
exclusive LUN set. Which value would you change?

An application generates 1000 random 16 KiB IOPS with a R/W ratio of 4:1. An
asynchronous mirror is started on the application LUN. The update cycle is configured to be
20 minutes, and updates take 6 minutes to complete. Assume that the data rate is constant.
What is the minimum space that should be configured for the Reserved LUN Pool on the
secondary VNX?

During a white board session with your customer you explain the benefit of partition
alignment. As an example, you use a 64 K write and explain the difference between a
properly aligned partition RAID 5 4+1 and a misaligned partition. If the partition is
misaligned, how many disk operations will be performed for a RAID 5 4+1 write?