A study is being conducted to determine the proper network characteristics for two data centers
located 500 kilometers apart. Average incoming I/O – MB/s [24 hrs/7 days/30days] – has been
characterized, but the data compressibility rate must be estimated. Which values should be used
for a minimum/maximum calculation?

A customer has two data centers located 500 kilometers apart and uses VNX arrays in each data

center for both block and file storage. Each data center is monitored and managed by Unisphere.
The customer wants to deploy an integrated replication methodology to protect all of his data.
Which product will meet the customer’s requirements?

A customer plans to use MirrorView/S as their DR solution. They have 10 TB of data to protect,
and are concerned about the performance impact of MirrorView/S on their production data. Their
application generates 8 kB I/Os which are 25% writes, and 256 kB I/Os which are 95% reads.
They are also concerned about the consequences of an accidental fracture on their environment.
How should they configure their data LUNs?

A customer plans to use MirrorView/S as their DR solution. They have slightly in excess of 10 TB
of data to protect, and are concerned about the performance impact of MirrorView/S on their
production data. They are also concerned about the consequences of an accidental fracture on
their environment.
How should they configure their data LUNs?

A customer asked for your assistance sizing a MirrorView/A solution. Following EMC best
practices, which factors would you consider?

A customer has a VNX array replicating to a CLARiiON CX4 array using MirrorView/S. A new VNX
array will be installed and used for testing. A copy of the existing VNX/CX4 data needs to reside
on the new VNX array. Incremental SAN Copy will be used to perform the copy.
What is a valid source LUN for the migration?

A customer has a 300 GB primary MirrorView/S image. The image workload is 5,000 IOPs of
random 16 KB I/Os with a read/write ratio of 4:1. The secondary image is fractured for 20 seconds
as the result of a connectivity failure.
How much data will be copied to the secondary as part of the resynchronization process?

You have advised a customer to upgrade their current CLARiiON storage array before migrating to
a new VNX. The customer would like additional information about what benefits the upgrade will
provide.
Where can information about known and fixed problems for EMC products be found?

A customer wants your assistance in deciding if their existing VNX array can be used to do
backup-to-disk instead of for tape backups. The customer has a VNX Unified storage system 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 should be recommended to the customer?

During a data gathering meeting with a customer, a discussion about applications was presented.
Most of the applications are best 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?