ABC.com has a centralized tape backup infrastructure and is looking for recommendations that will
enable them to meet a new recovery time objective of four hours.

What is a key design criterion in recommending a solution to meet the recovery time objective?

ABC.com wants to consolidate their four CX700 arrays to one DMX. Their Windows server
volumes span multiple CXs. In order to maintain consistency on the source arrays, Open
Replicator Hot Pull is being used for the migration.
Which feature will provide this capability?

A prospective customer has four applications (A, B, C, and D) with various LUNs they wish to
snapshot. The LUN sizes are as follows:
Application A:
10 GB
20 GB
10 GB
Application B:
25 GB

50 GB
Application C:
150 GB
5 GB
5 GB
Application D:
100 GB
25 GB
According to SnapView best practices, how large will the total Reserved LUN Pool be, assuming
only SnapView is used on only these LUNs?

A prospective customer has presented you with multiple applications. All applications have high
write activity levels and unpredictable growth patterns. The applications are currently hosted on
direct-attached storage in a RAID 1 configuration. They are concerned with making too many
changes at one time in their environment.
The prospect has asked you to justify your recommendation of RAID 1/0 on the CLARiiON
configuration you are proposing. How do you respond to the request?

ABC.com would like to create a large pool of “scratch space” disk for their development
environment. They are considering using high-capacity SATA drives in a RAID 5 configuration on
their CLARiiON array. General performance is not an issue. However, the customer does not want
to experience long periods of degraded performance in the case of RAID rebuilds.
Which CLARiiON feature will help the customer prevent this problem?

ABC.com plans to roll out several experimental large-scale host clusters with low-cost blades for
computationally intensive workloads. All IS operations are in a single data center (50 m x 40 m).
They use direct-attached storage on all hosts. For better manageability of storage, they are
considering a SAN infrastructure with CLARiiON storage (CX3-40s). Preliminary design calls for
200 server blades. Cost and performance are both critical considerations, but high availability is
not. Your initial design has single-pathed FC connectivity to each host. Under sustained load, each
server blade can sustain up to 4,000 IOPS at 16 KB per I/O. Which additional information do you
need before you can attempt a preliminary, high-level SAN design for this environment?

Click the calculator icon in the upper left-hand corner.

A customer is deploying a Microsoft Exchange 2003 environment and has requested assistance
with the associated disk design. They are deploying Exchange for 850 users with an average of 3
I/Os per user. They expect a 60% read and 40% write distribution.
The customer would like to know the number of disks required for both RAID 5 and RAID 1/0 DMX
configurations with 10k rpm drives.
How many disks are required for each configuration type?

During a proof of concept, ABC.com who is using a CLARiiON array with four Windows servers
notices I/O performance problems on a specific server. Looking at Navisphere Analyzer data for
the LUNs in question and comparing the statistics with the System Monitor (PerfMon) I/O counters
for the same Windows physical disks, the I/O statistics in Navisphere Analyzer are significantly
higher than the System Monitor shows. What is the likely reason for this performance issue?

ABC.com’s storage environment is organized into four single-director fabrics. The directors are
MDS-9509s with 64 switch ports in each. No more than 70% of available ports are in use.
The customer needs hosts in each fabric to access storage in the other three fabrics. It is
acceptable for host-to-storage traffic to traverse up to one hop.

What is the least disruptive SAN solution that you should consider?

ABC.com currently has a large storage install base with many hosts. A large number of the hosts
allocated their storage several years ago and have poor utilization rates. The customer has
engaged EMC to design a new storage solution to replace their current storage.
Which feature can be incorporated into the new design to help increase utilization?