Question 1 An Internet Service Provider, involved in internet services across the country, has about 3000 employees worldwide. This company has 12 regional offices across the country. Although the company is financially doing well, they continue to feel the competitive pressure from other Internet Service Providers. As a result, the company needs to ensure that the IT infrastructure takes advantage of fault tolerant features. Current Configuration and Challenges: - The company uses different applications, and all the applications are hosted on individual servers with disks configured as RAID 0. - Company's financial activity is managed and tracked by a single accounting application. It is very important for the accounting data to be highly available. - The accounting application performs around 15\% random write operations and the remaining 85% are random reads. - The accounting data is currently stored on a 5-disk RAID 0 set. Each disk has an advertised formatted capacity of 200 GB, and the total size of their files is 730GB. - The company performs nightly backups and removes old information - so the amount of data is unlikely to change much over the next 6 months. The company is approaching the end of the financial year and it is not possible to buy even one new disk drive because of budget shortage. Propose a RAID level that the company can use to restructure their environment and fulfill their needs. Also, justify your proposal based on cost, performance, and data availability. (20 marks)