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QUESTION 101
A cost-conscious customer is exploring Isilon for their PACS archive. The workflow consists of one hundred cases a day, each including fifty 60 MB image files. However, each image will have five-hundred 64 kB metadata files associated with it. They currently have six years worth of archived data. They will need to migrate to the new solution and they need to plan for an additional three years of archive capacity. Which solution would you recommend to fit their capacity needs?
A. 24 NL-Series nodes with N+3 protection policy providing 2597 TiB of useable capacity.
B. 18 NL-Series nodes with N+2:1 protection policy providing 2078 TiB of useable capacity.
C. 24 X-Series nodes with N+3 protection policy providing 2597 TiB of useable capacity.
D. 12 NL-Series nodes with N+2 protection policy providing 1300 TiB of useable capacity.
Answer: A
QUESTION 102
You are sizing an Isilon cluster for a new customer. Analyzing their workflow you determine that they have a large block random read workload. What is the most important factor to consider when sizing this solution?
A. Bandwidth
B. IOPS
C. Latency
D. Headroom
Answer: A
QUESTION 103
A customer is inquiring about expanding their primary cluster consisting of six S-Series nodes in order to improve performance. They have a second cluster with 11 X-Series nodes. Both clusters leverage 1GbE, but the customer recently installed a 10GbE network that can be utilized. They also have multiple Fibre Channel SAN arrays in their environment. They have a variety of workloads on each cluster and are in the process of determining which workloads belong on which cluster. They have discovered that one of the workloads – a SQL database that resides on the X-Series node cluster – is experiencing timeouts due to latency. The database vendor has suggested limiting latency to 5ms or less to eliminate these timeouts. How do you advise the customer?
A. Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
B. Merge the S-Series nodes and X-Series nodes into one cluster, upgrade the 1GbE to 10GbE, and leverage SmartPools to allow for the cluster to determine where data should reside.
C. Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.
D. Recommend they increase the amount of DRAM in the cluster or consider an Accelerator node in order to increase the amount of cache in their cluster.
Answer: A
QUESTION 104
You are designing a new Isilon system to store mobile device video clips. The files average 800 MB in size and the application team tells you to plan for up to 15000 new files per day. The product manager for this new service wants enough capacity for the first year and reminds you that response time for storing and retrieving the files is important for customer satisfaction. The files will be accessed frequently for the first 48 hours after creation, and then very infrequently after seven days. You plan to use N+2:1 protection, and will configure a SmartPools policy to move inactive files to an archive tier within the cluster. Which configuration best fits the project requirements?
A. 4 x X200 nodes with SSD; 36 x NL400 nodes with 4 TB drives.
B. 38 x X400 nodes with 4 TB drives and SSD.
C. 4 x S200 nodes with SSD; 45 x NL400 nodes with 3 TB drives.
D. 4 x X400 nodes with 1 TB drives; 36 x NL400 nodes with 4 TB drives.
Answer: A
QUESTION 105
You have been working with a customer to size a new Isilon cluster for their environment. You recently determined that a cluster with three X400 nodes with 1 TB drives and 48 GB RAM would be a perfect starting point for their workflow, but will have extra capacity. The customer just informed you that they have decided to also use the cluster for a small home directory environment and implement SmartQuotas. Which configuration changes should you consider?
A. Increase the memory and add SSDs to the configuration.
B. Add an additional X400-Series node to the configuration.
C. Add three NL-Series nodes with 1 TB drives with 48 GB RAM, and use SmartPools.
D. Add three S-Series nodes with 300 GB drives with 48 GB RAM, and use SmartPools.
Answer: A
QUESTION 106
Your customer has an existing Isilon cluster comprised of five NL-Series nodes. They have a new project that will quadruple their current throughput requirements. Upon reviewing reports in InsightIQ, you see that the aggregate external network throughput is peaking at 600MB/s. The customer states that data is only active for the first 7 days, but they keep it indefinitely. Which recommendation best supports their growth requirements?
A. Add X-Series nodes to the cluster, and use SmartPools to migrate inactive data to the NL-Series nodes.
B. Use the Isilon Sizing Tool to determine GNA requirements, and add NL-Series nodes with SSD to the cluster.
C. Add a VNX Unified array for the new project, and use rsync to migrate data to the Isilon cluster for archiving.
D. Add A-Series nodes to the cluster to boost combined network performance.
Answer: A
QUESTION 107
A potential customer has about 540 TB of NetApp running in ONTAP 7-Mode. They are willing to let you gather some workload data. They have LDAP and Active Directory authentication and primarily Windows Clients. They are very interested in Automated Tiering and Large Scale Archives. They are not certain about the workflows from the Marketing Department. The Content Team will only say they need to acquire 300 TB within 90 days. They do not know the average file size or the number of aggregates they are managing. Which tools would you use to gather information to do your Isilon sizing?
A. MiTrend WPA, Autosupport, and PerfCollect.
B. isi status, isi_netlogger, and PerfMon.
C. Wireshark, isi statistics, and iostat.
D. Isilon Insight IQ, OnCommand Insight, and nfsstat.
Answer: A
QUESTION 108
A potential customer has 540 TB Raw capacity of NetApp running in ONTAP 7-Mode. They are willing to let you gather some workload data. Their authentication sources are LDAP and Active Directory. Their users are primarily Windows Clients. They are very interested in Automated Tiering and Large Scale Archives. They are not certain about the workflows from the Marketing Department. The Content Team will only say they need to acquire 300 TB within 90 days. They do not know the average file size or the number of aggregates they are managing. Which tool(s) would you use next to complete your sizing?
A. MiTrend WPA, Autosupport, and PerfCollect.
B. Isilon Cluster Sizing Tool.
C. Wireshark, isi statistics, and iostat.
D. Isilon Insight IQ, OnCommand Insight, and nfsstat.
Answer: A
QUESTION 109
A potential customer uses a solution from an EMC competitor for NFS storage in their main data center. The existing arrays are five years old, and the customer would like to consolidate them into a single new system. The entire workload is generated by eight Linux hosts connected to the arrays that process video files. The customer informs you they are not able to collect performance information from the existing arrays. Which tools can capture the workload requirements?
A. iostat and nfsstat
B. MiTrends and netmon
C. netstat and esxtop
D. Wireshark and sysstat
Answer: A
QUESTION 110
You get a call from a customer that has just added 200 user connections to the cluster. They want to know how fast they are writing data with these new users. What tool would you use to gather this information?
A. InsightIQ
B. Network Monitor
C. Wireshark
D. Watch4net
Answer: A
QUESTION 111
You are called into an opportunity, you would like to get more information on the data skew of the filer. The customer has a supported filer. What assessment tool would you use to generate this information?
A. Workload Profile
B. Workflow Proflie
C. InsightIQ
D. SupportIQ
Answer: A
QUESTION 112
A customer has grown 2 PB in the last year. The cluster performs well most times of the day, but occasionally during the day, the customer notices a decrease in performance. You have been told that `tree-deletes’ are taking too long and can only be run on weekends. What would you recommend to speed up the `tree-deletes’?
A. Add an SSD node tier for metadata to account for at least 2% of RAW capacity.
B. Use an A100 node for added CPU performance to help with `tree-deletes’.
C. Add 20% more nodes to the cluster to help with degraded performance.
D. Add an SSD tier for metadata, ensuring all nodes have SSDs.
Answer: A
QUESTION 113
A customer has eight X400 24 GB RAM that supports 400 client connections today The customer plans to add 400 more clients in the next few months. They are looking at adding an A-Series node to the cluster to help with client connections. Before they start adding client connections, what hardware change do you recommend?
A. Add RAM to offset concurrent client connections.
B. Add an A100 to offset concurrent client connections.
C. Add nodes with SSD to help with connections.
D. Add more network switches to increase the number of connections.
Answer: A
QUESTION 114
You are asked to size a cluster for a file sharing environment. nfsstat indicates that no more than 10% of the requests are namespace operations (e.g. GETADDR, SETADDR). There will be 10000 active Linux users, connecting over NFS. Which cluster configuration would you recommend?
A. Ten X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1.
B. Five X400 (120 TB) 96 GB RAM, 2.4 TB SSD, N+2.
C. Ten X400 (60 TB) 48 GB RAM, 2.4 TB SSD, N+2:1.
D. Eight X200 (36 TB) 24 GB RAM, no SSD, N+2:1.
Answer: A
QUESTION 115
Your customer’s site uses an old X-Series cluster, and they are interested in consolidating their two primary workflows. iostat shows that one of the applications is sensitive to latency, while isi statistics indicates sensitivity to disk response times. There are approximately 1000 users accessing 70 TB of file data. Which node type would you recommend?
A. S200
B. X400
C. X200
D. NL400
Answer: A
QUESTION 116
A customer is making a decision between Isilon and a competitor’s offering. They currently have 100 TB of usable capacity and are forecasting 100% growth per year for the next three years, which will require them to lease additional space in their co-located data center. The CFO finds ROI and TCO to be important decision criteria. Which statement best emphasizes the value of Isilon for this customer?
A. Isilon’s OneFS data protection policies offer substantially lower overhead than competitive RAID based NAS solutions.
B. An IDC study found that Isilon requires 95% less down time hours per year compared to other competitors.
C. The competition cannot offer a scale-out NAS so as capacity is added to the array, performance may degrade.
D. Isilon’s OneFS allows administrators to manage much larger amounts of capacity than competitive offerings.
Answer: A
QUESTION 117
A potential customer requires 4 PB of usable capacity to store media files. The workloads are a combination of streaming video delivery and long term archive of video assets. There is very little space available in the customer’s datacenter, so physical density is very important. The customer is concerned about performance impact and potential data loss when using 3 TB or larger drives. What Isilon capabilities can address the customer’s concerns?
A. Isilon does not perform rebuilds – data reprotection is typically 2x-3x faster than traditional RAID rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Data redistribution runs faster with more nodes in the cluster.
B. N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Proactive hot sparing eliminates most drive rebuilds.
Endurant Cache reduces the overhead for write operations.
C. Isilon does not perform rebuilds – data reprotection is typically 2x-3x faster than traditional RAID rebuilds.
Data recovery is consistent, taking the same amount of time regardless of cluster size.
Isilon ‘short strokes’ 4TB drives to reduce rebuild time.
D. Isilon nodes have more drives per rack unit so fewer shelves are required.
Proactive hot sparing eliminates most drive rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Answer: A
QUESTION 118
A potential customer requires 800 TB 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 considering a solution from a competitor of EMC using two of the existing arrays and two new arrays. Which Isilon capabilities would show a better ROI for the customer?
A. Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically 80% or higher.
Isilon utilization is typically 80% or higher due to use of a single filesystem and virtual capacity for drive and node failures.
B. With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically 80% or higher.
OneFS compression results in higher effective capacity within the cluster.
Traditional clustered filesystems require 4%-10% internal overhead compared to Isilon virtual capacity.
C. Forward Error Correction overhead is 7% lower than traditional RAID.
Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
According to an IDC study, Isilon improves IT productivity by nearly 50% compared to traditional competitors.
D. Isilon has 15%-20% less overhead than traditional clustered filesystems.
According to an IDC study, Isilon utilization is nearly 50% higher than traditional competitors.
Isilon QOS headroom and multiple node pools ensures consistent performance up to 80% utilization.
Answer: A
QUESTION 119
Your customer’s initial use case was Home Directories. They implemented the cluster with four 1Gbps ports and LACP. They are planning to expand their cluster to support their core file services. They plan to upgrade their network infrastructure to 10GbE to facilitate this. What are two design impacts this change will have?
A. Maximum performance is obtained by only using a single 10GbE interface per node.
LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system.
B. LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system.
FCoE should be considered for the External Network Ports on the nodes.
C. Dual 10GbE ports on each node will enable throughput of 20Gbps.
Only connect half of the nodes to the network.
D. Maximum performance is obtained by only using a single 10GbE interface per node.
Isilon can support up to 400MB/s per node.
Answer: A
QUESTION 120
You have 1000 users for an application that reads and writes files averaging between one and four MB in size. Each user requires 24 MB of RAM. You want to add another 1000 users for this application, and in preparation for them, you run the isi statistics command. You discover that the average CPU utilization is 20%; aggregate throughput averages 700 MB/s and the disk QueueD average is 1.5. Your cluster currently has five X200 (12 GB RAM, 1 TB drive) nodes, uses N+2:1 protection and 1 GigE networking. What should you do to accommodate the next 1000 users?
A. Add five additional X200 (12 GB, 1 TB drive) nodes.
B. Upgrade each X200 node to a total of 24 GB of RAM.
C. Upgrade two of the 1 GigE NICs to 10 GigE on each node.
D. Add five A100 (24 GB RAM) accelerator nodes.
Answer: A
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