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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. A customer is planning an Oracle 11g implementation. You have been assigned to design the Oracle storage architecture. You recommend placing redo logs files on separate drives from other Oracle files. Your customer wants an explanation of this architecture choice. What best describes the reason for this EMC recommendation?

A) Redo logs read performance can affect the performance of the entire database
B) Redo logs write performance can affect the performance of the entire database
C) Redo logs on the same drives as the Oracle Data files is not supported
D) Separation ensures that disk failure will not result in losing the entire database

2. You are designing a boot from SAN solution for VMware ESXi servers connected to a Symmetrix VMAX storage array. What is a consideration?

A) Boot device must have a logical unit number between 128-255
B) Boot device must have RAID 1 protection
C) Boot device should be accessible across multiple paths
D) Boot controller should be in the highest-numbered PCI slot on the server

3. You have been tasked with gathering performance data for a Microsoft SQL server database that will be migrated to a Symmetrix VMAX. Which Perfmon counter must you measure prior to designing a disk layout?

A) Physical Disk\Disk Writes/sec
B) Logical Disk\Disk Write Bytes/sec
C) Logical Disk\Avg. Disk Bytes/sec
D) Physical Disk\Avg. Disk sec/Write

4. A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 4Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is connected - also at 4Gb/s.
The workload is expected to require at least 2300MB/s of reads at 128KB I/O size and must maintain performance in case of any major component failure in the host, switch or array. Assume that the existing workload on the VMAX does not exceed 100MB/s per port and assume that the ports can sustain up to 300MB/s without exceeding 70% utilization.
What is the minimum number of FA ports needed to spread the workload evenly across all 4 VMAX engines and meet the above performance requirements?

A) 12 FA ports, 3 per engine
B) 16 FA ports, 4 per director
C) 24 FA ports, 3 per director
D) 16 FA ports, 4 per engine

5. Click on the calculator icon in the upper left corner. A new Oracle database is being deployed on a 4-engine VMAX array. The DBA requests 2TB of usable capacity.
Which configuration will best distribute database workload across the back-end Disk Adapters (DAs) while avoiding host queing?

A) 4 x 16-way meta devices using 32GB members
B) 1 x 24-way meta device using 100GB members
C) 2 x 4-way meta devices using 50GB members
D) 5 x 400GB devices

Solutions: