Pass the EMC EMC Certification E20-555 Questions and answers with CertsForce

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Questions # 51:

A customer is trying to read data from Node 1 to Node 5 in an Isilon cluster. The two Isilon nodes have the same content in the private caches. Cached data is consistent across both instances. What is the correct sequence of steps that OneFS uses to ensure that all data is consistent across the entire shared cache?

Question # 51


Expert Solution
Questions # 52:

Which type of infrastructure does the Isilon scalable appliance connect to on the front-end?

Options:

A.

Ethernet


B.

FICON


C.

Infiniband


D.

Fibre Channel


Expert Solution
Questions # 53:

Refer to the exhibit.

Question # 53

Which tool was used to create this output and what is the most telling characteristic?

Options:

A.

nfsstat and write-intensive access


B.

iostat and write-intensive access


C.

Read-intensive access and nfsstat


D.

isi_netlogger and moderate metadata read operations


Expert Solution
Questions # 54:

You have gathered information from your customer about their current NAS environment. They indicated they are having performance and time-out issues with their clients accessing the storage. Currently over 5000 clients are simultaneously accessing the NAS; however, this will double in the next year.

Based on this information, what recommendations for a new Isilon cluster would you give to the customer based on this information?

Options:

A.

Create a six node X400 cluster today. As additional clients are added, add additional X400 nodes for them.


B.

Create a seven node X400 cluster today. You will not need to purchase additional nodes as more clients are added.


C.

Create a three node cluster today. As more clients are added, add three additional nodes each time for 1000 clients.


D.

Create a five node X400 cluster today. As more clients are added, add a Performance Accelerator node for every 1000 clients.


Expert Solution
Questions # 55:

An Isilon customer has two 5-node clusters; one for production and one for disaster recovery (DR). The customer's workflows are replicated to the DR cluster through SyncIQ on individual schedules. They shut down their production cluster for a scheduled DR test, failed over to the DR cluster, and continue their DR testing.

Assume both clusters have identical shares, exports, and user authentication. Additionally, assume the client applications have been stopped and the DNS re-pointed. Which SyncIQ Policy method should be used to continue production operations?

Options:

A.

Revert


B.

Initiate Manual Failback


C.

Initiate Automated Failback


D.

No change is needed


Expert Solution
Questions # 56:

Which Isilon feature provides the ability to build a cluster using different node types and tiers to meet a customer's business objectives?

Options:

A.

SmartPools


B.

SmartQuota


C.

SmartConnect


D.

SnapshotIQ


Expert Solution
Questions # 57:

A company needs to have their data asynchronously replicated. They also need to maintain a daily copy of the data for a week at the target side to enable fast recovery of files. They decide to purchase two Isilon clusters. They do not want to spend money unnecessarily. Which licenses must they acquire?

Options:

A.

SyncIQ license at source and target clusters. SnapshotIQ license at source and target clusters.


B.

SyncIQ license at source cluster only. SnapshotIQ license at source cluster only.


C.

SyncIQ license at target cluster only. SnapshotIQ license at target cluster only.


D.

SyncIQ license at source and target clusters. SnapshotIQ license at target cluster only.


Expert Solution
Questions # 58:

Which node type provides CPU, memory, and Fibre Channel connectivity?

Options:

A.

Backup Accelerator


B.

Performance Accelerator


C.

X-Series


D.

NL-Series


Expert Solution
Questions # 59:

A customer is looking for a NAS solution to support their read-intensive application.

This solution must meet the following requirements:

    1000 users

    Aggregate bandwidth of 5 GB/s

    500 TB of user data

    Typical latency of 5 ms.

The files are distributed evenly across 10 directories.

Which cluster configuration would best meet these requirements?

Options:

A.

Seven X400 (108 TB) nodes with no SSD


B.

Eight NL400 (96 TB) nodes with 1.6 TB SSD


C.

Eight X400 (96 TB) nodes with 1.6 TB SSD


D.

Twenty-five X200 (30 TB) nodes with 800 GB SSD


Expert Solution
Questions # 60:

A NetApp customer is considering Isilon. They use their filers for UNIX home directories, and would like to see a suggested configuration that would meet their needs.

What would you do to help size this cluster?

Options:

A.

Ask for an autosupport file and upload it to MiTrends to generate a workflow profile


B.

Ask them to install InsightIQ and collect data from the filer, then import to SQL for analysis


C.

Ask for the output from nfsstat and upload it to MiTrends to generate a workflow profile


D.

Use tcpdump and upload the output file to MiTrends to generate a protocol analysis


Expert Solution
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