Free Isilon Solutions and Design Specialist Exam for Technology Architects E20-555 Exam Practice Test

A customer has a data retention period of three years. They want a solution in which files cannot be deleted, changed, or modified.Which Isilon SmartLock version should they implement?

• Compliance version
  
• Standard version No WORM
  
• Enterprise version
  
• Standard version with WORM
  

A customer has two data centers (Site A and Site B) and in each data center there is an Isilon cluster. They are replicating data between the sites using SyncIQ.You have been reviewing their disaster recovery plan and found the following:* The policies specify that SyncIQ runs a replication job every four hours and that the job finishes within one hour.* Three additional hours will be needed to get servers and the network redirected to work from Site B.What is the Recovery Point Objective in this plan?

• 3 hours
  
• 4 hours
  
• 5 hours
  
• 6 hours
  

An architect is designing a solution for a new customer. The customer is going to use the cluster to store a large number of files that will be accessed by many users.What IO optimization should be used and what kind of prefetching will take place?

• Concurrency, aggressive prefetching
  
• Random, aggressive prefetching
  
• Concurrency, moderate prefetching
  
• Concurrency, no prefetching
  

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?

• 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.
  
• 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.
  
• 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.
  
• 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.
  

At which level can retention periods be applied with Isilon SmartLock?

• Directory
  
• Node
  
• File system
  
• Cluster
  

What is the maximum volume or aggregate size that can be created with an Isilon Scale-Out NAS system?

• 16 TB
  
• 100 TB
  
• 2.3 PB
  
• 20 PB
  

A customer wants to use their large Gen 6 Isilon cluster for ILM. All of their data is written to and read from a single file pool. They need to use multiple file pools, so slightly used data is stored on less expensive, large disks. Heavily used data is stored on a faster tier.What would satisfy the customer's needs?

• Configure SmartPools Advanced
  
• Add an A-series node with SmartPools license
  
• Enable FAST VP license on each node pair
  
• Install SmartPools license on the cluster
  

A new customer is interested in an Isilon Gen 6 solution to replace their sprawling and outdated Linuxenvironment. Which client tool should you use to establish an estimate of the workload and pattern as an input to the sizing process?

• tcpdump
  
• lometer
  
• File System Analytics
  
• iostat
  

Which Isilon job periodically checks disk sectors to ensure they can be read?

• MediaScan
  
• IntegrityScan
  
• Dynamic Sector Repair
  
• Isilon Data Integrity
  

For concurrent I/O, how do SmartCache and Endurant Cache differ?

• Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
  
• Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
  
• SmartCache immediately commits the write to NVRAM on the local node and one peer node
  
• SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file