You are currently investigating a SQL performance issue on a VNX array. You narrow down the RAID group where the log file resides. You find that the disk response time is 12 ms.
Based on EMC best practices, what should be your assessment of the environment?
A. Needs improvement
B. Very good
C. Acceptable D. Immediate action required
Your customer wants to expand each back-end bus to the maximum of 10 enclosures attached via an LCC with an edge expander. They are concerned that it will add extra latency.
What should be your response?
A. Max latency will be 5 microseconds
B. Max latency will be 10 microseconds
C. Max latency will be 1 microsecond
D. There will be no additional latency
You designed the disk layout on a VNX storage system for a large client. They have a very large amount of basic file data consisting of Word documents and text files. The data needs to be accessible but sits for long periods of time without activity.
You decided to place this data on a thin LUN and compress it to maximize capacity. The client is concerned about how much capacity they will reclaim with compression.
Based on the data that is going to be placed on the compressed LUN, what compression ratio will the client typically see?
A. 2:1
B. 3:1
C. 4:1
D. 8:1
Your customer has recently purchased a VNX to host their three Oracle RAC database environments and automated payment processing application. The RACs and application are differentiated as follows: ORA- PROD, ORA-STAGE, ORADEV, APP-PROD, APP-STAGE, and APP-DEV.
The customer has provided you with their Enterprise Storage Policy (ESP) and is requesting that you adhere to this policy when architecting their new VNX solution. The ESP states the following as it relates to Oracle database storage requirements:
All LUNs must be configured as raw devices
All LUNs must be managed using ASM
No fewer than two LUNs per ASM disk group
No more than one database per RAC per RAID Group
No more than three databases per RAID group
All data LUNs must be 1000 GiB RAID 5
All FRA LUNs must be 500 GiB RAID 1/0
No more than eight total disks per RAID Group
No fewer than four disks per RAID Group
Based on the ESP, and assuming ORA-PROD has six instances, what is the minimum number of RAID Groups required?
A. 1
B. 2
C. 3
D. 6
A customer wants to use Replication Manager (RM) to create local copies of their SQL databases. They want RM jobs to complete as soon as possible without any interruption to the database. They also want to minimize the impact on the storage system.
Based upon EMC best practices, which solution would you recommend to address their requirements?
A. Run RM jobs during non-peak hours when possible.
B. Run all the RM jobs on a single SP and stagger the RM job start times.
C. Set up clones to reside in the same RAID Groups for each database.
D. Run all the RM Jobs at the same time on a single SP.
A customer has recently virtualized an Oracle database on a VNX system. Initially, performance was satisfactory. Now, with more usage there is some performance degradation. You used Analyzer to check the backend and did not see any problems.
Which VMware best practice would be easiest to resolve the issue?
A. Use a paravirtualized SCSI adapter
B. Use Oracle ASM
C. Align VMFS properly
D. Create dedicated datastores to service workloads
An application owner is concerned about the performance of a set of application servers. The applications generate a large amount of small I/O. Disk and LUN response times appear to be acceptable for the servers in question. The servers are all Windows hosts using QLogic HBAs with the default EMC driver settings.
Which Unisphere Analyzer counter would provide the most useful insight into the issue?
A. SP Port Queue Full Count
B. SP Port Total Bandwidth (MB/s)
C. Disk Utilization (%)
D. LUN Total Bandwidth (MB/s)
A customer has placed their user data, consisting of text, Word, and Excel files, on a thin LUN created from an existing pool. The thin LUN is reaching capacity and cannot be expanded over the pool due to capacity constraints on the pool. What is the best way for the customer to reclaim some of the capacity on the thin LUN?
A. Compress the thin LUN
B. Defragment the thin LUN
C. Migrate the data to a new LUN on a new pool
D. Delete old files
An Oracle database is stored on an EMC VNX storage array and replicated to a second VNX array at a DR location. EMC RecoverPoint is providing the replication. According to best practices, how many Consistency Groups are required to provide application consistent recovery?
A. Three Consistency Groups: (1) data files and undo logs; (2) online redo logs; (3) archived redo logs and control files
B. Two Consistency Groups: (1) data files, control files, and undo logs; (2) online redo logs and archived redo logs
C. A single Consistency Group containing data files, undo logs, online redo logs, archived redo logs, and control files
D. Two Consistency Groups: (1) data files, online redo logs, undo logs, and control files; (2) archived redo logs
A Snapshot Source LUN performs 500 random 4 KiB IOPs, with a 4:1 R/W ratio. At what rate is chunk data written into the RLP when the session starts?
A. 800 KiB/s
B. 6.25 MiB/s
C. 7.8 MiB/s
D. 12.5 MiB/s
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