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EMC Symmetrix Solutions Design Exam for Technology Architects Sample Questions:

1. A Symmetrix VMAX has been configured with Dynamic Cache Partitioning. What criterion must be met for a cache slot to be eligible for donation?

A) The fall through time must be less than the donation age.
B) The fall through time must be greater than the donation age.
C) There must be cache slots available in the default partition.
D) The cache slot must belong to a static partition.

2. You are designing a Symmetrix VMAX SRDF/S over GigE solution. The production and remote data centers are 100 km apart.
What is the expected write response time delay due to latency?

A) 4 ms
B) 2 ms
C) 0.5 ms
D) 1 ms

3. What is the size of a thin device extent in a Symmetrix VMAX?

A) 512 KB
B) 64 KB
C) 1024 KB
D) 768 KB

4. What is a valid FAST policy?

A) EFD 400GB RAID 5 (3+1) -30%
FC 15K 300GB RAID 1 - 30%
FC 15K 400 GB RAID 5 (3+1) - 20%
SATA 7200 1TB RAID 6 (6+2) - 30%
B) EFD 400GB RAID 5 (3+1) -30%
FC 15K 300GB RAID 1 - 30%
SATA 7200 1TB RAID 6 (6+2) - 30%
C) EFD 400GB RAID 5 (3+1) -10%
FC 15K 300GB RAID 1 - 100%
SATA 7200 1TB RAID 6 (6+2) - 100%
D) EFD 400GB RAID 5 (3+1) -10%
FC 15K 300GB RAID 1 - 50%
SATA 7200 1TB RAID 6 (6+2) - 20%

5. 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 "N:\". You have decided on RAID-5 protected 15,000 RPM drives for the new SQL database and RAID-1 for the transaction log.
Last week, you configured Perfmon to record the current IOPS load of the databases during the 8-hour business day, Monday through Friday as shown in the exhibit. During an average business day, the transaction log processes 87 GB worth of data.

Following EMC best practices, how many IOPS should be subtracted from the overall write IOPS, when calculating for the database writes?

A) 386
B) 396
C) 1544
D) 792

Solutions: