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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. 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?

A) Bond EXT-0 across all nodes.
B) Use jumbo frames to compensate for the 1GB Core network.
C) Aggregate Infiniband (IB) ports across all nodes.
D) Use LACP to aggregate the network ports on each node.

2. An Isilon customer is reporting less than expected performance from the cluster and poor space utilization. The customer is using three X400 nodes with N+2:1 protection policy to host webserver log data. Upon further analysis, it is discovered that the webservers write log files 64 KiB in size. The log files are then accessed by an analytics application for reporting.
What should be done to increase write performance of the cluster?

A) Add S-Series storage nodes to the cluster.
B) Add A-Series performance accelerator nodes to the cluster.
C) Change the protection scheme to a mirroring policy.
D) Add SSDs to the X-Series nodes in the cluster.

3. What key considerations should be kept in mind when designing a 300TB solution?

A) SmartPools Smartconnect Snapshots Space for snapshots
B) Defining class of service Time of day services ROI and TCO Data retention and backup
C) Always include 2% SSD SmartPools Smartconnect Snapshots InsightIQ
D) Workflow management Defining class of service Time of day services RPO and RTO Data retention and backup

4. 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) What applications access this storage?
B) How many NICs do your clients have?
C) What type of racks are in your datacenter?
D) Are you using a KVM to access your storage?

5. 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 20% more nodes to the cluster to help with degraded performance.
B) Add an SSD node tier for metadata to account for at least 2% of RAW capacity
C) Use an A100 node for added CPU performance to help with 'tree-deletes.'
D) Add an SSD tier for metadata, ensuring all nodes have SSDs.

Solutions: