Question 1

Immediately after migrating to a new HDT pool, Hitachi Tuning Manager shows that Tier 1 SSD, Tier 2 SAS, and Tier 3 NL-SAS are not busy for performance but Tier 1 and Tier 2 are over utilized for capacity. From this analysis, which action should be performed?

Accepted Answer

A)  Re-asses after HDT performs page migration cycles. 
B)  Add more drives to Tier 1. 
C)  Add more drives to Tier 1 and Tier 2. 
D)  Remove the SSD tier.

Question 2

A large bank is completing a capacity planning exercise and wants to upgrade their current VSP G1000 to properly support their online banking application for the next 18 months. The IT department wants to know where they should invest to achieve the transactional Service Level Objective (SLO). In this scenario, which three recommendations would you make? (Choose three.)

Accepted Answer

A)  Measure throughput of all SAN directors. 
B)  Export two months of Performance Monitor data. 
C)  Measure the storage resource utilizations. 
D)  Request a statement of growth requirements. 
E)  Measure the existing I/O profile.

Question 3

How does the HDLM Extended Round Robin algorithm impact sequential I/O?

Accepted Answer

A)  It continues to use the same path for a user-specified count of sequential I/O requests. 
B)  It remembers a user-determined number of addresses to better implement sequence detection for the storage. 
C)  It buffers and reorders I/O requests to improve sequence detection by the storage. 
D)  It makes a path decision for every I/O request.

Question 4

A VSP G800 HDT pool contains FMDs, NL-SAS drives, external storage with 15K 600 GB SAS drives, and external storage with 10K 900 GB SAS drives. Which tier level contains the NL-SAS drives in this configuration?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4

Question 5

Which three statements are true regarding a VSP G400 configuration for a Microsoft Exchange Server environment? (Choose three.)

Accepted Answer

A)  RAID 1+0 is a recommended RAID level for the database volumes. 
B)  RAID 6 is a recommended RAID level for the database volumes. 
C)  HDP is a recommended configuration for database volumes. 
D)  Parity group concatenation is recommended. 
E)  Microsoft JetStress testing should be used to validate the required performance.

Question 6

Which three statements are true regarding the Hitachi external storage architecture? (Choose three.)

Accepted Answer

A)  Enabling Cache Mode increases exposure to problems with high Cache Write Pending. 
B)  Enabling Cache Mode allows destaging asynchronously from host I/O. 
C)  Enabling Cache Mode always improves performance. 
D)  A System Option mode can force in sequence destaging even when destaging asynchronously. 
E)  Disabling Cache Mode for an external LDEV eliminates the use of cache.

Question 7

A high level of writes to external storage is backing up into a VSP G1000 cache, creating a high write pending problem that is affecting other workloads. Which three actions will help to minimize this problem? (Choose three.)

Accepted Answer

A)  Add more cache to the enterprise storage system. 
B)  Add more cache in the external storage. 
C)  Quarantine the LUNs in a separate cache partition. 
D)  Set Cache Mode to "Disabled" for the external LUNs. 
E)  Address the throughput constraints in the external storage.

Question 8

A VSP G800 customer has one HDT pool with three tiers and they report a high frequency of relocations up and down between Tier 1 and Tier 2, affecting the HDT pool performance. Which two actions will help solve the issue? (Choose two.)

Accepted Answer

A)  Decrease the monitoring period of the HDT pool. 
B)  Increase the size of the grey zone between Tier 1 and Tier 2. 
C)  Change the HDT pool setting from Period mode to Continuous mode. 
D)  Increase the size of Tier 2.

Question 9

Relocation cycles are regulatory failing to complete in an HDT implementation where the customer is also reporting lower than expected performance. What should be done in this scenario?

Accepted Answer

A)  Change to Continuous mode and increase the monitor period cycle time. 
B)  Change to Period mode and increase the monitor period cycle time. 
C)  Change to Period mode and reduce the monitor period cycle time. 
D)  Change to High-Performance mode and reduce the monitor period cycle time.

Question 10

You are planning for a performance upgrade for a transaction application. Which three metrics are necessary to determine the required back-end storage configuration in this scenario? (Choose three.)

Accepted Answer

A)  cache read hit ratio 
B)  read/write ratio 
C)  transfer rates 
D)  queue depth 
E)  IOPS

Question 11

You are sizing a storage system for a response-sensitive database application in a VMware environment. Which two statements are true in this scenario? (Choose two.)

Accepted Answer

A)  The cache hit percentage is determined primarily by the amount of cache provided by the storage system. 
B)  The peak load requirements of the database and filesystem is a key factor in determining the resources required to meet response time requirements. 
C)  The server virtualization will change the I/O profile of the application as viewed by the storage. 
D)  Sizing estimations for a database workload should be based on a steady state and then an extra 10% resources for headroom should be added.

Question 12

Which two conditions are amplified by the use of longer data intervals for analysts? (Choose two.)

Accepted Answer

A)  There will be more arbitrary data loss when viewing on a typical computer screen. 
B)  Analysis tools will require more processing time and computing resources. 
C)  The peaks values reported will reflect interactive user experience less accurately. 
D)  Analysis tools will require less processing time and computing resources.

Question 13

What are two benefits of placing transaction log files on RAID 1+0 disks for Microsoft SQL Server databases rather than RAID 5 disks? (Choose two.)

Accepted Answer

A)  Multiple transaction log files are supported. 
B)  Faster recovery after disk hardware failure is realized. 
C)  Capacity utilization rates are improved. 
D)  Microsoft recommendations are followed.

Question 14

For which two purposes is the SVP Performance Monitor suitable? (Choose two.)

Accepted Answer

A)  Reporting by device owner 
B)  Annual trend analysis 
C)  Real time observations 
D)  A reference for verifying the accuracy of other performance tools

Exam 1: Hitachi Vantara Certified Expert Performance architect