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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. Click on the calculator icon in the upper left corner. Refer to the exhibit.

You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all user databases reside on a single locally attached disk enclosure, mounted to "M:\". You have decided on RAID-1 protected 15,000 RPM drives for the new SQL environment.
Last week, you configured Perfmon to record the current IOPS load of the databases during the 8-hour business day, Monday thru Friday as shown in the exhibit. During an average business day, the transaction log processes 43 GB worth of data.
Following EMC best practices, what is the minimum number of spindles that must be allocated for optimal transaction log performance?

A) 4
B) 6
C) 2
D) 10

2. During Symmetrix VMAX performance analysis, you notice that a collection of VMAX devices has a front-end I/O rate that is much lower than its back-end I/O rate. What might be the reason for this?

A) Front-end ports are faster than the back-end ports.
B) Host is striping the data across all of the devices.
C) Devices are RAID 5 protected.
D) Workload has a high percentage of read hits.

3. Refer to the exhibit.

In a Cascaded SRDF/Star environment, Site B fails. The surviving sites are reconfigured to enable remote data protection. What is used to determine the invalid tracks that must be moved from Site A to Site C?

A) Inclusive OR of one SDDF bitmap at Site A and one SDDF bitmap at Site C
B) Inclusive OR of two SDDF bitmaps at Site C
C) Inclusive OR of two SDDF bitmaps at Site A and a bitmap at Site C
D) Inclusive OR of two SDDF bitmaps at Site A

4. What is the device write pending limit of the total writeable cache for a Symmetrix VMAX ?

A) 12%
B) 5%
C) 10%
D) 8%

5. What describes a restartable database in an Oracle environment?

A) A copy of a database in which Oracle data files are always synchronized
B) A copy of a database in which transaction logs can be applied to the data files
C) A copy of a database using consistency technology by putting the database in cold backup mode
D) A copy of a database using consistency technology without putting the database in hot backup mode

Solutions: