Your customer is operating a payment processing application on a Windows Server cluster
with the back-end Oracle databases running on Oracle Enterprise Linux (OEL). Both the
application and database environments have been presented storage from the customer’s
VNX solution. Your customer reports less than optimal performance for their online payment
processing application. While utilizing IOSTAT, utlbstat and utlestat, a high load on the buffer
cache and I/O system performance issues are found on the database servers. What is the
most likely problem?

A customer’s database resides on a RAID 5 Pool with SAS drives.
Which best practice should be followed to optimize Reserved LUN Pool disk performance?

Your customer is designing a Proof of Concept with SQL Server attached to a VNX. The
storage design includes seven LUNs on a RAID Group. The system is generally very heavily
loaded, with a particularly high load on the cache. This is a very carefully controlled
environment and your customer has asked for assistance in planning the layout of the LUN

location on the physical spindles. Where in the RAID Group would you recommend placing
the two heavily used LUNs if the physical spindle is fully utilized?

A Snapshot Source LUN performs 500 random 4 KiB IOPs, with a 4:1 R/W ratio. At what
rate is chunk data written into the RLP when the session starts?

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?

An Oracle database is stored on an EMC VNX storage array and replicated to a second VNX
array at a DR location. EMC RecoverPoint is providing the replication.
According to best practices, how many Consistency Groups are required to provide
application consistent recovery?

A customer has placed their user data, consisting of text, Word, and Excel files, on a thin
LUN created from an existing pool. The thin LUN is reaching capacity and cannot be
expanded over the pool due to capacity constraints on the pool.
What is the best way for the customer to reclaim some of the capacity on the thin LUN?

An application owner is concerned about the performance of a set of application servers.
The applications generate a large amount of small I/O. Disk and LUN response times appear
to be acceptable for the servers in question. The servers are all Windows hosts using
QLogic HBAs with the default EMC driver settings.
Which Unisphere Analyzer counter would provide the most useful insight into the issue?

A customer has recently virtualized an Oracle database on a VNX system. Initially,
performance was satisfactory. Now, with more usage there is some performance
degradation. You used Analyzer to check the backend and did not see any problems.
Which VMware best practice would be easiest to resolve the issue?

A customer wants to use Replication Manager (RM) to create local copies of their SQL
databases. They want RM jobs to complete as soon as possible without any interruption to
the database. They also want to minimize the impact on the storage system. Based upon
EMC best practices, which solution would you recommend to address their requirements?