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Exam 5: XtremIO Solutions and Design Specialist Exam for Technology Architects

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Question 81

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An Isilon customer created a SyncIQ policy to replicate data from a primary cluster to an offsite secondary cluster. The primary cluster becomes unavailable, and the customer has completed a failover onto the secondary cluster. The primary cluster becomes available again, so the customer would like to fail back data to the primary cluster. The failback process does not replicate data. What is the most likely reason the failback policy does not replicate data to the primary cluster?

A) Clusters are not sharing an Infiniband switch
B) Secondary cluster has modified files on it
C) Original policy was for synchronization
D) Policy contains a SmartLock directory

E) None of the above
F) A) and D)

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Question 82

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An Isilon has two ports configured per node. Each port is on a different VLAN. Although incoming traffic is evenly distributed, transmitted data from the Isilon uses one port more than the other port. What could be the cause of this imbalance?

A) Static routes are configured on the less-used port
B) A default gateway was not configured on both ports
C) Source Based Routing is not enabled on the cluster
D) Priority of the gateway in the less-used port set too low

E) None of the above
F) C) and D)

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Question 83

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What is a benefit of using SSDs for Metadata Read/Write Acceleration?

An Isilon customer created a scheduled SyncIQ policy to replicate data from an Enterprise-mode SmartLock directory. The source cluster is now unusable and the target cluster does not automatically allow writes to the data in the replicated SmartLock directory. What is the reason why the target cluster did not automatically allow writes of the data?

Which provider supports authentication and lookup facilities for local users and groups that have been defined and are maintained on the cluster?

What is the smallest unit of manageable storage within Isilon SmartPools?

A customer has an Isilon cluster that they want to simplify a Hadoop workflow. The workflow analyzes large amounts of log data written to storage using FTP and results are viewed by Microsoft Windows clients? How can this be achieved?

Which process is used to protect file system structures against corruption through 32-bit CRC checksums?

If Dynamic IP Address Allocation is being configured in Isilon SmartConnect, which policy setting needs to be determined?

A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data. How many additional copies of data are written into the Isilon cluster using HDFS?

You need to gather information in order to design an Isilon solution. What are included in the Top 10 qualification questions?

A customer has two data centers (Site A and Site B) .There is an Isilon cluster in each data center and they use SyncIQ to replicate data between the two data centers. You have reviewed their disaster recovery plan and found the following: The policies specify that SyncIQ runs a replication job every 3 hours and that the job finishes within 1 hour. Three additional hours will be needed to get servers and the network redirected to work from Site B. What is the Recovery Point Objective in this plan?

Which type of link aggregation is supported with Isilon nodes?

Traditional NAS storage architecture deploys simple two-way failover between two controllers in their storage systems, such as highly-available configurations. How is the Isilon architecture different in terms of system resiliency and availability?

Refer to the exhibit. A customer has a VMware Horizon View environment with the following characteristics: One X-Brick XtremIO cluster 100% read during a boot storm 8K read/writes What is the maximum recommended number of VDIs the XtremIO cluster can support during a boot storm?

A customer needs to be able to periodically monitor their node live performance for ongoing operational tasks as well as during problem analysis. You have recommended they use the isi statistics command to fulfill this need. What types of statistics and statuses could be displayed with this command?

You are involved with a Proof of Concept where the performance is not what you expect. What can you use to collect process stack information and a listing of process waiting on I/O?

An architect is designing a new cluster. The cluster contains H500 nodes to store home directories of 2000 users and A200 nodes to store backups of VMware virtual machines. Which data access patterns should be used?

Where does SmartCache stage its write cache?

Which type of deduplication is used to maximize the storage efficiently on an Isilon cluster?