E20-324 Question #157: Real Exam Question with Answer & Explanation

You have been tasked with designing the storage layout for a VNX7600 array. VMware hosts will attach to the array using two HBAs and two Fibre Channel switches. The array will have FAST VP, SnapView, and FAST Cache installed. The customer wants to use as many Flash drives as possible for FAST Cache. They also want to put as many drives as possible into a single FAST VP pool while still being able to use SnapView. Snapshots will be taken each day of 10 x 1 TB LUNs and will be used for backups to tape. Once the backups complete, the snapshots will be destroyed. The customer insists on using SnapView due to the backward compatibility with their scripts. The source LUNs will produce less than 20% change daily. The array has the following hard drives installed. -- 31 X 200 GB Flash hard drives -- 38 X 600 GB 15K SAS hard drives -- 17 X 2 TB 7.2K NL-SAS hard drives The entire design should follow EMC best practices. How should the LUNs for the reserve LUN pool be configured?