A customer is having problems writing data to their Isilon cluster. You have checked all network settings and authentication sources. No errors are reported from the cluster. The customer runs tcpdump and sends the results to you.
Now that you have the output, which tool would you use to open the results file?
Which Isilon product is recommended where low-latency and maximum performance is a critical factor?
-- Exhibit --
We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit --
The customer will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to add per month?
How much space is consumed by a 4 KB file when the file data is written to the Isilon cluster?
A telecommunications company has a substantial amount of data. This data is being created by network elements within their environment.
The company wants to change the way the network elements Call Detail Records (CDR) are stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure, and then ingests them into a large database. Once ingested, a query engine accesses the database and performs analysis on these files. The system is functional; however, since the amount of CDRs generated will increase exponentially over the next year, the company is open to alternatives for storing and analyzing these records.
In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs.
After you have conducted an assessment of the workflow, you have recommended an Isilon Cluster to work within the Hadoop environment.
What would be the best recommendation to the customer for the workflow of Hadoop with Isilon?
If business objectives such as value and SLAs are considered, which Isilon license feature provides the ability to manage performance and the cost of data in a cluster?
You need to gather information in order to design an Isilon solution. What are included in the Top 10 qualification questions?
How many files can reference a single block within a shadow store?
A customer is making a decision between Isilon and a competitor’s offering. They currently have 100TB 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?
If an Isilon customer has an environment that requires usage data for chargeback, for analyzing usage trends and for capacity planning, which type of quota enforcing option should be used?
Where are file system operations initiated on an Isilon node?
A customer is considering using the CloudPools feature to send archive data to their on premises object
storage appliance. The customer needs to know how many objects will be created by the Isilon when it tiers
files using CloudPools.
If the customer has 20 1MB files, 2 10MB files and 4 3MB files, how many objects will CloudPools version 1.0
create?
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?
Three jobs are running, all with a priority of 5. A new job with a priority of 6 needs to be run. What happens?
Independent of protocol, what does Isilon OneFS use to translate identities?
If a customer experiences a node failure while at 90% capacity, what is the fastest way of replacing the node in an Isilon cluster?
Refer to the exhibit.
A large hospital chain has approached you to redesign their storage infrastructure. The head of IT believes their requirement is for 100 TB of RAW capacity. They want to consolidate their PACS, file shares and home directories onto one cluster and require very fast enumeration of the directories. The following are the notes from meetings with the department heads.
Which is the best cluster configuration that meets the customer's requirements?
For concurrent I/O, how do SmartCache and Endurant Cache differ?
How many impact policy levels are available when configuring Isilon jobs?
Which Isilon feature provides the ability to build a cluster using different node types and tiers to meet a customer's business objectives?
A customer is evaluating Isilon and Pure FlashBlade solutions. Which protocol is available for both solutions?
On an Isilon Gen 6 Cluster with 4 nodes and N+2d:1n protection, how much storage would a 64 KB file
consume?
A system administrator has identified a problem on the cluster and has opened a service request on support.emc.com. They initiate isi_gather_info but it is taking a long time to complete.
What can they do to speed up the completion of isi_gather_info for the next run?
An Isilon customer has set up a replication policy between a primary cluster and a secondary cluster. After the initial synchronization of the clusters, the primary cluster starts to display some issues. The customer initiates a failover operation between the two clusters.
During the failover, the primary cluster becomes fully operational again. The customer wants to stop the failover operation between the two clusters.
What is the best way to stop the failover operation and continue using the primary cluster?
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A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company’s recent acquisition – an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor’s SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company’s intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company’s data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment.The company’s Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
-- Exhibit --
Based on the meeting with the customer, which Isilon cluster configuration would you recommend?
In what order does an Isilon Gen 6 cluster respond to a client file read request?
What are attributes of SFTP?
You meet with the IT Director of a large single site campus. The IT department has recently taken over Physical Security from the facilities department and plans a complete overhaul of the surveillance solution. They are looking to you as a storage architecture expert to provide the correct amount of storage needed. The IT Director asks you what items they need to provide in order to size this solution.
What data do you require from the customer?
What determines how a user is directed to the correct secure multi-tenancy access zones?
Refer to the Exhibit.
What is represented by the information shown?
An Isilon customer wants to have different snapshot policies and schedules on the same directory. Why is this possible on an Isilon cluster?
Your customer has an Isilon Gen 6 cluster with eight H400 nodes. During an unexpected power outage some
of the nodes go offline simultaneously.
How many nodes need to remain up and communicating over the backend network to maintain a quorum in
the cluster and still enable write access to the OneFS file system?
Where are file system changes first stored?
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 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 customer is trying to get Isilon SyncIQ to run on the two clusters they just purchased. However, they are experiencing some problems. They have asked you to explain how the SyncIQ licensing works.
What information can be provided to the customer?
You are reviewing an opportunity with a trusted advisor. You both discover gaps in the initial solution design.
Each iterative discussion with the customer helps you define the solution better. The documents produced capture the customer's requirements.
What else needs to occur to refine the sizing considerations?
Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?
You have scheduled a meeting with a prospective customer in the Life Sciences vertical market. Which Isilon features should be presented to them?
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.
What would be the best solution for this network configuration?
When a client requests a file to read from an Isilon cluster, in which order does the read operation access the hardware in a node?
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 customer is using file pool policies to archive infrequently accessed files to Amazon S3 via CloudPools. How
could the customer easily find out how many stub files are stored on the cluster?
You have had several discussions with your customer in the processor design industry. They have stated that they want a Scale-Out NAS platform for their design environment. Their most significant responses were "We have 125 design engineers accessing large diagrams and we need high throughput to support them. Can we also get the highest performance available? We need to stay ahead of our competitors." Other areas you discussed were their data retention policies and workflow after the chip design is completed. They plan to archive the design files but the files must stay on line.
What is your initial node recommendation?
Refer to the exhibit.
Your customer has three different clusters. File systems on two of the clusters are at 90% full, and the largest cluster is 10% full. Active data resides on the largest cluster. The customer has five different node types totaling 2PB and 54 nodes. Nodes from left to right are as shown:
1.X200
2.12000X
3.36000X
4.NL108
5.108NL
They have a Smartpool license and believe that tiering data would help free up needed space.
After talking with the customer and explaining the use of SmartPools, how would you recommend optimizing utilization across all of the nodes that the customer owns?
A customer environment is used for analytics on very large datasets. They are interested in using Isilon storage and Hadoop but are concerned about the costs.
How does Isilon change the scalability of a Hadoop environment?
What replication option is NOT supported by SyncIQ?
A customer is running OneFS 8.0 on an Isilon cluster consisting exclusively of NL400 nodes. The storage administrator recently heard that OneFS 8.1 provides journal vaulting. What should you advise the storage administrator?
You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.
In general, how should the solution be presented to the customer?
An Isilon cluster component has the following characteristics:
Which cluster component is described?
A customer has a cluster running with a single access zone and serves multiple internal departments. The
clients access the cluster over both SMB and NFS protocols. A department user has been assigned the task of
auditing SMB activity and enforcing appropriate quotas for certain users.
How should the cluster administrator grant this access?
