EMT Practice Test

1. Question Content...

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Question1: You are recommending RAID 6 to a customer for a non-database HDT pool.
What are two reasons for this recommendation? (Choose two.)

Question2: A VSP G1000 customer is concerned about high VSD utilization alerts during their nightly backup and application maintenance window. To address their concerns, you want to inform them about the maximum acceptable utilization level range. What would be the range in this scenario?

Question3: How does the HDLM Extended Round Robin algorithm impact sequential I/O?

Question4: A customer with a VSP G1000 is using HDT with SAS 15K drives and external storage. The customer wants the daytime response-sensitive workload to benefit from tiering. They also want to minimize the impact of relocations on the daytime operation itself.
In this scenario, which action will satisfy the requirements?

Question5: 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?

Question6: A customer has a VSP G800 storage system with an HDT pool with internal SAS drives and a virtualized third-party array using SATA RAID 6. The virtualized array is connected to the VSP G800 using four 8 Gbps FC paths. The customer reports performance problems on an OLTP application deployed on a virtualized server using the HDT pool.
What are two reasons for this problem? (Choose two.)

Question7: Your customer has an HDP pool dedicated to interactive production workloads. Which two applications are good candidates to share this HDP pool? (Choose two.)

Question8: 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.)

Question9: 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.)

Question10: 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.)

Question11: Response times in an HDP pool have been increasing consistently with each additional workload during a large scale migration. The response times may become unacceptable with subsequent migrations. The purchase of additional equipment is an acceptable solution. What are two valid actions in this scenario?
(Choose two.)

Question12: A customer has an HDP pool with four array groups and 600 GB SAS drives operating at 85% utilization.
Four array groups of the same configuration were added to the pool.
In this scenario, which metric should be reviewed to validate optimal pool performance?

Question13: Which three statements are true regarding the Hitachi external storage architecture? (Choose three.)

Question14: A customer complains about high response times. This occurs frequently with bursts of write I/O at 6,000 IOPS for 10 second periods during each minute. The write response is 60 ms during these 10 second periods. The average IOPS rate reported by Hitachi Tuning Manager over 1 minute is 600.
In this scenario, what is the average response time over 1 minute?

Question15: DP-Vol LUNs are taken from an HDP pool deployed with 128 disks (16x4D+4D RAID groups). Access is random read.
Which combination of FC paths, LUN Queue Depth, and number of DP-Vols will result in a per-disk queue of 4 within this pool?

Question16: Which two statements are true regarding HDP pools? (Choose two.)

Question17: Which two conditions will cause high Cache Write Pending on a VSP G8000? (Choose two.)

Question18: You are deploying an external storage system and its connection to a VSP G1000. The VSP G1000 has four external pools. You must ensure balanced utilization of the external storage system parity groups within each pool.
What would you do to satisfy this requirement?

Question19: 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.)

Question20: A customer has several Oracle databases with different workload profiles residing on old HUS systems.
The customer wants to consolidate workloads on a new VSP G800 system to increase database performance and to reduce costs. Which configuration would you use to accomplish this task?

Question21: Which two conditions are amplified by the use of longer data intervals for analysts? (Choose two.)

Question22: For which two purposes is the SVP Performance Monitor suitable? (Choose two.)

Question23: Your VSP G1000 customer has an HDP pool with 600 GB drives and they need more IOPS in the pool.
Which action will satisfy the requirement?

Question24: 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?

Question25: For a VSP G1000 system serving a mission critical interactive workload, which two statements are true about VSD failover? (Choose two.)

Question26: A VSP G1000 performance analysis shows that server response times for virtualized volumes are high,
100 ms and higher, but HDD utilization rates in an external HUS 150 never exceed 35%. There are no processor or path constraints in the configuration. The workload is steady and stable. Which two actions will optimize this configuration? (Choose two.)

Question27: Which three statements are true regarding a VSP G400 configuration for a Microsoft Exchange Server environment? (Choose three.)

Question28: In a database environment, the system administrator complains that high write response times are triggering frequent automated alerts. However, utilization for processor, paths, and array groups is low.
Database users are not complaining. What causing this problem?

Question29: 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?

Question30: 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.)

Question31: A user with a diskless VSP G800 uses ShadowImage from the G800 with a virtualized VSP G200 system.
Application performance suffers during the frequent ShadowImage resynchronization operations.
What should be done to reduce the impact of the ShadowImage throughput in this scenario?

Question32: A customer plans to migrate an interactive application from a VSP to VSP G1000. The application has consistent access across all its capacity with low hit rates and no particularly high I/O access areas. The application latency must be less or equal to 1.5 ms.
Which configuration do you recommend to satisfy the requirements?

Question33: 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.)