Online Access Free E20-880 Exam Questions

An application generates 500 random 8 KiB IOPS with a R/W ratio of 3:1. An asynchronous mirror is started on the application LUN. The update cycle is configured to be 30 minutes, and updates take 15 minutes to complete. Assume that the data rate is constant.
What is the minimum space that should be configured for the Reserved LUN Pool on the secondary VNX?

• A.14,064 MiB
• B.7,032 MiB
• C.16,250 MiB
• D.879 MiB

A customer needs to move data from a CLARiiON to a new VNX storage system. Attempts to configure a SAN Copy session with Unisphere fail. The customer uses Navisphere Secure CLI to configure the session. The session can be successfully started from Navisphere Secure CLI but fails just prior to completion each time it is started. What is the cause of the failure?

• A.Source is a standard LUN and the target array has only meta LUNs available.
• B.Source LUN is larger than the target LUN.
• C.Source and target LUN IDs do not match.
• D.Source LUN is RAID 1/0 and the target LUN is RAID 5.

A customer decides to oversubscribe a switch port group to optimize switch usage.
What factors need to be considered?

• A.Bandwidth, IO and response times
• B.Bandwidth, transfer rates and utilization
• C.Bandwidth, response time and utilization
• D.Bandwidth, IO and transfer rates

A customer is experiencing performance degradation when accessing certain CIFS shares configured on a VNX for File storage system. To troubleshoot, they would like to create a report that shows a combination of CIFS and network data.
What command would you recommend that they use?

• A.netstat -i
• B.server_stats
• C.server_sysstat
• D.netstat -e

Your customer is operating a payment processing application on a Windows Server cluster with the back-end Oracle databases running on Oracle Enterprise Linux (OEL). Both the application and database environments have been presented storage from the customer's VNX solution.
Your customer reports less than optimal performance for their online payment processing application. While utilizing IOSTAT, utlbstat and utlestat, a high load on the buffer cache and I/O system performance issues are found on the database servers.
What is the most likely problem?

• A.High Amounts of Recursive (SYS) SQL
• B.Long Full Table Scans
• C.Shortage of rollback segments
• D.Redo logs are too small