最新的EMC VNX Solutions Expert Exam for Technology Architects - E20-880免費考試真題
A customer is designing an environment that utilizes thin LUNs on a pool. The customer makes capacity calculations before they create the thin LUNs, and determine that three thin LUNs are required. After the customer creates them they experience a capacity shortage.
How much overhead should the customer have calculated into the usable capacity for each thin LUN?
How much overhead should the customer have calculated into the usable capacity for each thin LUN?
正確答案: A
Your customer recently upgraded their IP switch hardware. Since the upgrade, the customer is experiencing performance degradation on certain NFS exports configured on a VNX for File storage system. The file systems providing the problem exports are all mounted to DataMovers that have been attached to ports on the new switches as part of the upgrade. They have engaged you for advice.
Which action would you recommend?
Which action would you recommend?
正確答案: B
Which Unisphere Analyzer metric is most useful when determining whether an application's read IO access pattern is random or sequential?
正確答案: C
A customer is experiencing performance degradation when accessing certain CIFS shares configured on a VNX for File storage system. To troubleshoot, they would like to create a report that shows a combination of CIFS and network data.
What command would you recommend that they use?
What command would you recommend that they use?
正確答案: C
You are conducting an analysis of a Celerra system to migrate the data to a new VNX Unified storage system. You want to collect statistical information about CIFS file system activity.
Which "server_stats" statistic type would you use to get the desired information?
Which "server_stats" statistic type would you use to get the desired information?
正確答案: A
A client has asked for assistance with designing his Exchange environment. The environment today is fully virtualized and Exchange will be as well. The client is concerned about local recovery and has decided to make VMware snapshots of their VMFS File system housing Exchange. The VMware servers are all attached through fiber to a VNX.
What volume type is required to meet the customer's protection needs?
What volume type is required to meet the customer's protection needs?
正確答案: C
A customer has installed a VNX storage system for their VMware cluster based environment with six ESX hosts. The ESX will be dedicated for MS SQL servers supporting two heavy SQL online transaction processing applications with multiple instances and 16 single SQL instance applications. You are designing the scaling approach scope for those ESX hosts.
What is your recommendation in scaling the deployment of SQL servers?
What is your recommendation in scaling the deployment of SQL servers?
正確答案: B
In designing a disk layout with multiple disk types, which metric should be used for data locality?
正確答案: C
A VMware v4 customer is considering consolidation of their environment to support their cloud IAAS (Infrastructure as a Service) initiative on VNX storage. They have a number of customers interested in deploying clustered application servers, across many varied application environments, onto this new infrastructure.
What advice would you give your customer to help them formulate their new environment and minimize their administrative overhead?
What advice would you give your customer to help them formulate their new environment and minimize their administrative overhead?
正確答案: C
A customer is concerned about the VNX Unified storage performance. The VNX provides storage services for variety of Windows and UNIX application servers. When monitoring the switches they notice heavy traffic between the servers and the storage.
The LUN analysis yields the following results:
$ /nas/sbin/naviseccli -h spa getdisk 1_0_4 -rds -wrts -bytrd -bytwrt
Bus 1 Enclosure 0 Disk 4
Read Requests: 478651
Write Requests: 202813
Kbytes Read: 47457840
Kbytes Written: 6449720 What is the I/O size being used to send data to disk?
The LUN analysis yields the following results:
$ /nas/sbin/naviseccli -h spa getdisk 1_0_4 -rds -wrts -bytrd -bytwrt
Bus 1 Enclosure 0 Disk 4
Read Requests: 478651
Write Requests: 202813
Kbytes Read: 47457840
Kbytes Written: 6449720 What is the I/O size being used to send data to disk?
正確答案: B
A clone source LUN is 512 GiB in size. It performs 500 random 8 KiB IOPs with a 3:1 R/W ratio. As part of ongoing testing, the clone is fractured for 10 minutes and then resynchronized. The testing is performed every hour.
How much data (to the nearest GiB) is read from the source LUN as part of the resynchronization process?
How much data (to the nearest GiB) is read from the source LUN as part of the resynchronization process?
正確答案: C
You received a call from a customer asking to help troubleshoot why they cannot select dvols using MVM from their remaining pool LUNS to create a stripe volume.
What could be a reason for this?
What could be a reason for this?
正確答案: A
As a result of suffering a catastrophic failure, your customer has requested a DR solution. The solution must introduce a higher level of availability for their Exchange 2010 system. The customer wants a strategy that involves Replication Manager and DAG with third-party replication enabled.
In what state(s) of the database would the replication occur?
In what state(s) of the database would the replication occur?
正確答案: C
Your customer is reporting less than optimal performance for their online payment processing application. The payment processing application is running on a Windows Server cluster with the back-end Oracle databases running on Oracle Enterprise Linux (OEL). Both the application and database environments have been presented storage from the customer's VNX solution.
Which tool is best suited to identify performance issues on the application servers?
Which tool is best suited to identify performance issues on the application servers?
正確答案: C
A customer with a VNX for File system has a mix of Windows and Linux clients. The Storage Administrator wants to track and examine different types of correlated statistics for their file system read and write operations.
Which correlated statistic can accomplish this job?
Which correlated statistic can accomplish this job?
正確答案: D