IBM C4090-451

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IBM Midrange Storage Technical Support V3 Sample Questions:

1. A customer wants to add a fully populated BladeCenter chassis to their existing Storwize V7000.They have experienced performance issues in the past due to congestion and high utilization of inter-switch links (ISL). The technical specialist has been asked for the recommended ISL oversubscription ratio.
Which of the following is the best response?

A) 50:1
B) 10:1
C) 1:1
D) 20:1

2. A customer informs the technical specialist that they have thin provisioned their N series storage environment which has 100 TB of usable disk space, and they have achieved a 50% utilization rate of the allocated space. The environment has 100 TB assigned, and they are currently using 50 TB.
What is the theoretical maximum of assigned storage space?

A) 250 TB
B) 200 TB
C) 100 TB
D) 150 TB

3. A cost sensitive customer requires a tape library solution with four LTO drives and 40 tape cartridge slots.
Which of the following products best fits the requirement?

A) TS2900
B) TS3200
C) TS3100
D) TS3310

4. A customer has a long standing environment on an AIX platform for an application which has 300 volumes assigned to it. The reason given by the customer for such a high number of volumes is to allow the application to spread its workload out across these devices because only 1 transaction per volume is allowed to be outstanding at any one time. The technical specialist is consolidating the environment to a smaller number of volumes on a Storwize V7000.
Assuming that the application will support the use of a smaller number of volumes, what adjustment can the technical specialist recommend to allow the number of outstanding I/O operations on each volume be increased to maintain performance?

A) Queue Depth
B) Storwize V7000 Compression
C) Adaptive Rate Limiting
D) LUN Masking

5. Which of the following statements is true about the DCS3700?

A) The minimum number of disk drives installed must be 20.
B) A maximum of three DCS3700 Expansion Units can be attached.
C) 8 GB of mirrored cache is standard, expandable to 16 GB.
D) The DCS3700 Storage System occupies 5 rack units.

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