Click on the calculator icon in the upper left-hand corner. A client has a storage requirement for an object database. The application is expected to generate random I/O requests. The I/O profile…

Click on the calculator icon in the upper left-hand corner. A client has a storage requirement for an object database. The application is expected to generate random I/O requests. The I/O profile is:

• 70% random reads
• 30% random writes
• Total host I/O per second is 20,000
• Required usable capacity is 35 TB

The client is concerned about cost, so RAID 5 (8+1) data protection will be used. What is the minimum number of 300 GB 15K SAS drives needed to meet the client's performance and storage requirements, including hot spares drives?