E20-555 Online Practice Questions and Answers

Which Isilon OneFS job, that runs manually, is responsible for examining the entire file system for inconsistencies?

A. IntegrityScan

B. MediaScan

C. AutoBalance

D. FlexProtect

A hospital is considering using Isilon to store their long-term archive data for their GE PACS application. They currently have two million 17 MB studies. They expect capacity requirements to be 50% compounded growth per year. They plan to use N+2:1 protection, and would like this sized for three years of growth.

Which minimum cluster configuration would meet this customer's environment?

A. Five NL400 (1 TB drive) nodes

B. Four NL400 (2 TB drive) nodes

C. Five X200 (3 TB drive) nodes

D. Three X400 (3 TB drive) nodes

An Isilon customer experienced a node failure. The failure requires that the affected node be permanently removed from the cluster. What will occur in the cluster upon failure of the node?

A. OneFS will assume it is a temporary failure and the data will not be protected at the appropriate levels.

B. Cluster will detect the node failure and automatically begin the SmartFail process.

C. FlexProtect will be activated and data will be protected at the appropriate levels.

D. Nothing. When data protection levels are set appropriately, OneFS will always protect data without manual interaction.

If Isilon SmartConnect is being configured in a customer environment, which records are required for a supported implementation?

A. A SmartConnect Service IP host record and a zone delegation for the SmartConnect zone delegated to the SSIP

B. An overloaded host record with each SmartConnect zone member's IP address and an SRV record to provide resolution services

C. A SmartConnect Service IP host record and a corresponding PTR record for each SmartConnect zone

D. A SOA record for the SmartConnect Service IP and a corresponding CNAME record for each SmartConnect zone

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. What type of racks are in your datacenter?

C. Are you using a KVM to access your storage?

D. How many NICs do your clients have?

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.

At a minimum, how many connected and available nodes are required to maintain quorum in a 25-node cluster?

A. 10

B. 12

C. 13

D. 17

Traditional NAS storage architecture deploys simple two-way failover between two controllers in their storage systems, such as highly-available configurations. How is the Isilon architecture different in terms of system resiliency and availability?

A. Isilon OneFS enables each node to have a designated partner node for simple failover between the pair.

B. Isilon solutions can enable failover to other nodes with the use of client-side drivers.

C. Isilon clustered architecture deploys standby failover nodes to ensure the highest available solution.

D. Isilon OneFS enables each node to be a peer to any other node in an Isilon cluster.

A potential customer is considering replacing a four year old, Linux-based NFS server with 40TB 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

A customer requires a backup to tape of their Isilon cluster. They want advice on whether to implement a two-way NDMP solution or a three-way solution. The front-end network must be used to stream data to the backup solution. Which cost-effective solution will meet their needs?

A. Two-way including a Backup Accelerator

B. Three-way without a Backup Accelerator

C. Three-way including a Backup Accelerator

D. Two-way without a Backup Accelerator