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QUESTION 181
An Isilon customer has two 5-node clusters, one for production and one for disaster recovery (DR). The customer’s workflow is a SmartLock workflow and is replicated to the DR cluster through SyncIQ on an individual schedule. The customer needs to shutdown their production cluster for scheduled maintenance. Assume both clusters have identical shares, exports, user authentication, and that the client applications have been stopped and the DNS re-pointed. What is the correct method to start operations on the DR cluster?
A. Initiate Manual Failover of the SyncIQ Policy.
B. Initiate Automated Failover of the SyncIQ Policy.
C. No change to the SyncIQ Policy.
D. Revert the SyncIQ Policy.
Answer: B
QUESTION 182
You meet a customer for the first time. They explain that their current environment for NAS does not meet their needs. You want to make sure that Isilon is a good fit for their needs. What would be a good prequalifying question to ask?
A. Where will the data center be installed?
B. How many concurrent clients are accessing your NAS?
C. How many users are in your Directory Services?
D. Are you currently using a UPS for your main power source?
Answer: B
QUESTION 183
You have been invited to meet with the Social Media and Marketing Department and gather requirements for a potential File System Project. They primarily use CIFS and are considering deploying a Hadoop cluster to analyze customer demographic data. The Senior Systems Engineer thinks they will need 2 PB of usable capacity. What would you do to gain an understanding of the customer’s environment to qualify and develop the opportunity?
A. Create a cluster configuration specifying HDFS, NFS, and CIFS protocols; select 19 x X400 nodes with 144 TB per node, and Enhanced Support.
B. Request the Windows Systems Administration Team run a PerfMon analysis on the Marketing Servers, consider adding 75 x 3 TB drives to your VNX 5500, and contact the DBA Team for their help.
C. Ask them to identify how the current data is accessed, where the data is accessed from, and who is accessing the data.
D. Send the Social Media Team a sizing and features spreadsheet to complete; download the OneFS Architectural White Paper for them, and create a Logical System diagram in Visio.
Answer: B
QUESTION 184
You have had several meetings with an existing EMC VMAX customer. They have agreed that they would like to review an initial Isilon Solution for unstructured data used by the Product Development Team. All production is managed through a Global Enterprise Resource Planning system based in Germany. They require 600TiB of usable capacity. The File System must be accessible from Windows and Linux High-End Workstations. The files are generally not accessed after 120 days, and they would like automated tiering. Which questions about architectural integration will impact the solution design?
A. How many clients will access the File System?
Will their VDI clients access the Isilon Cluster?
What is the DR plan for the ERP System?
B. What Enterprise Resource Planning platform are they using in manufacturing?
What is their Recovery Point Objective?
What is their Archival Strategy?
C. What non-sizing-specific factors in the customer’s environment could impede integration of the Isilon solution?
What applications are they using?
What are your priorities among performance, scalability, or availability?
D. How many data centers do they have?
Will their Network Infrastructure support implementing Isilon?
What Enterprise Resource Planning platform are they using in manufacturing?
Answer: C
QUESTION 185
Your customer is a major metropolitan newspaper. Your previous discussion centered on their storage requirements, and you asked them some of the Top Ten questions. They responded: “Well, it’s not the prettiest or most high-tech solution…we use Secure FTP (SFTP) to upload the stories and images and put them in a workflow that formats them for printing in the newspaper.” “What really worries us is the fact that our Storage Array from your competitor is going out of maintenance in 120 days, and they are dropping support for Secure FTP. This isn’t even considered in our D/R Plan. Do you have a better solution with Isilon?” Which questions led to this information?
A. How much capacity are you looking for?
What applications access this storage?
What risks are there in your current infrastructure?
B. What is your network infrastructure like?
How many Storage Fabrics do you have?
What is your Disaster Plan for the Newspaper?
C. What does your infrastructure look like?
What applications access this storage?
What protocols and version number?
D. What filesystems, SMB, NFS, or other are you using?
What does your infrastructure look like?
How do you manage your File Systems?
Answer: D
QUESTION 186
You are sizing an Isilon Cluster for a new customer. Analyzing their workflow, you determine that they have a small block random read workload. What is the most important factor to consider when sizing this solution?
A. Headroom
B. IOPS
C. Latency
D. Bandwidth
Answer: B
QUESTION 187
Your customer has an existing Isilon cluster with seven X200 nodes. The cluster is used to store home directories and departmental shared folders. They are planning to deploy a new application that generates small block, synchronous writes. Which OneFS 7 capability can help reduce latency for the new workload?
A. Endurant Cache
B. L2 Cache
C. Solid State Drives
D. Prefetcher
Answer: A
Explanation:
https://blog.dellemc.com/en-us/diving-deeper-into-isilon-onefs-7-0/ (performance, third para)
QUESTION 188
Refer to the exhibit. You are analyzing a customer’s existing Isilon environment using InsightIQ in order to expand the cluster. When examining the protocol data, you see the output as shown.
What does the data tell you about the workload?
A. It is mostly sequential reads.
B. It uses large read requests.
C. It is metadata intensive.
D. It contains mostly random writes.
Answer: C
QUESTION 189
A customer plans to replace an existing array that is supported by the MiTrend Workload Profile Assessment (WPA) service. You receive performance data from the customer and run a WPA report that shows the array has 50 TB of usable capacity. In discussions with the customer, you learn the content is comprised of four million 6 MB files and 400 million 64 KB files. The customer explains they have a small budget and very limited rack space available in their datacenter. Performance is not a concern because the files are rarely accessed. Which configuration provides the needed usable capacity using N+2:1 protection, and requires the least amount of rack space?
A. 3 x NL400 nodes with 2 TB Drives.
B. 3 x X400 nodes with 1 TB Drives.
C. 5 x X200 nodes with 1 TB Drives.
D. 6 x X200 nodes with 1 TB Drives.
Answer: A
QUESTION 190
An existing customer has two NAS systems providing NFS storage in their main datacenter – one is an Isilon cluster and the second is an array from another vendor. Both systems are four years old, and the customer would like to consolidate the storage into a single solution. According to the customer, both systems support identical workloads with similar performance and utilization, and they want the new solution to support 50% performance growth. Which method can model the workload requirements, and what multiplier will capture the requirements for the new solution?
A. Use isi statistics protocol, and multiply by 3.
B. Use isi statistics drives, and multiply by 1.5.
C. Use isi statistics query, and multiply by 2.
D. Use isi statistics system, and multiply by 3.
Answer: A
QUESTION 191
A potential customer is considering replacing a four year old, Linux-based NFS server with 40 TB of usable capacity. The existing system supports home directories, an internal website, and a content repository for the customer’s content management system. The customer is concerned about performance of any new solution because they expect to double workload in the content management system. What tools can be used to collect performance data needed to size the new solution?
A. Iostat and nfsstat
B. Perfmon and sysstat
C. Isi statistics and Wireshark
D. Syslog and vmstat
Answer: A
Explanation:
http://agiletesting.blogspot.com/2009/11/nfs-troubleshooting-with-iostat-and.html
QUESTION 192
You are asked to size a cluster for a file sharing environment. nfsstat indicates that 75% of the requests are namespace operations (e.g., GETADDR, SETADDR). There will be 8,000 active Linux users, connecting over NFS. Which cluster configuration would you recommend?
A. Five X400 (66 TB) 48 GB RAM, 1.2 TB SSD, N+2:1.
B. Eight X200 (27 TB) 12 GB RAM, 600 GB SSD, N+2.
C. Eight X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1.
D. Eight X200 (36 TB) 48 GB RAM, no SSD, N+2:1.
Answer: C
QUESTION 193
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?
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.
Answer: C
QUESTION 194
A potential customer requires 800TB of usable capacity to store medical images for their network of health clinics. The IT department has limited staff and currently manages four storage arrays from other vendors. During a meeting with the Director of IT, you learn that the company is planning to deploy a scale-out NAS solution from a competitor of EMC. Which factors can demonstrate a lower TCO using Isilon?
A. An IDC study found that Isilon requires 30% less downtime per year compared to other solutions.
B. Isilon linear scalability eliminates over buying and over provisioning.
C. An IDC study found that Isilon requires 95% less downtime per year compared to other solutions.
D. Isilon uses lower speed NL-SAS drives which reduces overall power and cooling requirements.
E. An IDC study found that Isilon requires 95% less downtime hours per year compared to other competitors.
F. Isilon linear scalability eliminates over buying and over provisioning.
G. An IDC study found that Isilon requires 95% less downtime hours per year compared to other competitors.
H. Isilon linear scalability closely aligns with additional staff requirements as capacity grows.
Answer: CF
QUESTION 195
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?
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.
Answer: B
QUESTION 196
Your customer is looking for a storage solution that will be able to store seven million 3 MB files, which are written and seldom accessed. Read and write operations are both completed by a web-based application, which requires 1.3 Gbps throughput. The customer’s network has not been upgraded in many years, so the network interfaces are 1 Gbps. Which cluster configuration would best meet the customer’s requirements?
A. 3 NL400 nodes
B. 3 X400 nodes
C. 4 X200 nodes
D. 5 S200 nodes
Answer: D
QUESTION 197
A customer wants to add Unix users to their cluster, and requires that NFS access be fault-tolerant. What would you recommend?
A. Use NFS v4 and dynamic IP addressing with SmartConnect Basic.
B. Use NFS v4 and dynamic IP addressing with SmartConnect Advanced.
C. Use NFS v3 and dynamic IP addressing with SmartConnect Advanced.
D. Use NFS v3 and dynamic IP addressing with SmartConnect Basic.
Answer: B
QUESTION 198
Your customer has an Isilon 4-node X400 cluster used for home directory use, and has since updated to OneFS 7.0. The HR and Legal departments have been very strict about using only dedicated file servers that are part of a single, isolated, untrusted Active Directory domain. Their filer has been out of maintenance, and fears are being raised that, due to the age, it may fail at some point. What could the IT department do, to allow the HR and Legal groups to provide file share services, with minimal impact to their other application permissions?
A. Recommend a 2nd cluster for the HR/Legal department.
B. Utilize SmartPools to create two pools to separate the domains.
C. Consolidate onto a single cluster and merge the domains.
D. Use Access Zones for each domain.
Answer: B
QUESTION 199
You are designing a new Isilon cluster that requires backup to tape for all files in the Legal and Accounting shared folders. The customer has sized their IP network to support the application workload, but no additional bandwidth is available. What should be recommended for the backup solution?
A. Use an Avamar NDMP accelerator and dedicated 10Gb/s network interfaces.
B. Use Backup Accelerator nodes for 2-way NDMP.
C. Use Backup Accelerator nodes for 3-way NDMP.
D. Use SmartConnect Advanced and 10Gb/s network interfaces with LACP.
Answer: B
QUESTION 200
A customer’s cluster contains three X200 (24 GB RAM, 3 TB drives) nodes, and three X400 (48 GB RAM, 1 TB drives) nodes. All nodes are configured in a single pool. All data is protected at N+2. After upgrading OneFS to 7.0, the Isilon Web interface indicates that files are not fully protected. What should be done to correct this situation?
A. Recreate the original pool using the Isilon Web interface.
B. Add 24 GB RAM to each of the X200 nodes.
C. Recreate the original pool using the command line interface.
D. Add two X200 nodes and two X400 nodes.
Answer: C
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