Dell E20-885 - VNX Solutions Expert Exam for Implementation Engineers Exam
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Total 275 questions
Question #6 (Topic: )
Six months ago, you implemented an SQL 2008 database and followed EMC best
practices for sizing and layout. The database is now experiencing performance slowdowns.
You configure Perfmon to capture "disk bytes per second", "average disk queue length",
and "percent disk time" in a log view for the database volumes. The log shows the disk
bytes per second remained steady but there was an increase in the average disk queue
length.
Which action should you take to solve this problem?
practices for sizing and layout. The database is now experiencing performance slowdowns.
You configure Perfmon to capture "disk bytes per second", "average disk queue length",
and "percent disk time" in a log view for the database volumes. The log shows the disk
bytes per second remained steady but there was an increase in the average disk queue
length.
Which action should you take to solve this problem?
A. Increase the number of spindles servicing this database.
B. Use SQL Activity Monitor to identify rogue queries that may be affecting performance.
C. Migrate the database to lower latency spindles.
D. Decrease the queue length setting on the HBA.
Answer: A
Question #7 (Topic: )
You are implementing SAN Copy for Linux hosts connected to an EMC VNX using FC and
iSCSI connectivity. There are eight queued sessions and multiple applications contending
for bandwidth. Which configurable SAN Copy feature would you recommend?
iSCSI connectivity. There are eight queued sessions and multiple applications contending
for bandwidth. Which configurable SAN Copy feature would you recommend?
A. Fibre Preferred
B. SP Reboot
C. LUN Trespass
D. admhost
Answer: A
Question #8 (Topic: )
Refer to the exhibit.
[EMC-E20-885-7.0/EMC-E20-885-4_2.png]
You are implementing a new VNX and you are considering whether or not to use FAST
Cache. You decide to test the effect on response times with and without FAST Cache.
At what point in the graph do you consider the warm-up period to be complete?
[EMC-E20-885-7.0/EMC-E20-885-4_2.png]
You are implementing a new VNX and you are considering whether or not to use FAST
Cache. You decide to test the effect on response times with and without FAST Cache.
At what point in the graph do you consider the warm-up period to be complete?
A. C
B. B
C. D
D. E
Answer: A
Question #9 (Topic: )
Refer to the exhibit.
[EMC-E20-885-7.0/EMC-E20-885-5_2.png]
LUN 30 is a 50 GB LUN on a 4+1 R5 group consisting of 300 GB drives. It is the only
active LUN. I/O size is 4 kB.
What can you infer about the I/O access pattern to LUN 30?
[EMC-E20-885-7.0/EMC-E20-885-5_2.png]
LUN 30 is a 50 GB LUN on a 4+1 R5 group consisting of 300 GB drives. It is the only
active LUN. I/O size is 4 kB.
What can you infer about the I/O access pattern to LUN 30?
A. I/O is bursty.
B. Coalescing is occurring.
C. LUN I/O is single-threaded.
D. Full stripe writes are occurring.
Answer: A
Question #10 (Topic: )
A customer wants to deploy an Exchange 2010 farm doing 8,400 IOPS with a R/W ratio of
1/1. The total amount of space needed is 7,500 GB.
What would you recommend the storage configuration to be?
1/1. The total amount of space needed is 7,500 GB.
What would you recommend the storage configuration to be?
A. A pool consisting of five 100 GB eMLC Flash drives, and 30 drives of 300 GB 15K in RAID 5, with FAST-VP enabled
B. A pool consisting of five 100 GB eMLC Flash drives in RAID 5, and 20 drives of 300 GB 15K in RAID 5, with FAST-VP enabled
C. A pool consisting of 120 drives of 300 GB 15K, in RAID 5 (4+1)
D. A pool consisting of 120 drives of 600 GB 15K, in RAID 5 (4+1)
Answer: A
