City Guilds Model Questions Vol1 2019 Information Technology Question 18
Practice objective / multiple choice question 18 from the 2019 City Guilds Model Questions Vol1 Information Technology examination.
A server uses a RAID 5 array consisting of four identical disks, each of capacity \(2\text{ TB}\). Each disk can sustain a sequential write speed of \(150\text{ MB/s}\). For RAID 5, a write operation incurs a write penalty of four disk I/O operations. The system must support a sustained write workload of \(200\text{ MB/s}\). Determine whether the existing RAID 5 array can meet this requirement. If it cannot, calculate the minimum number of additional identical disks that must be added (keeping the RAID 5 configuration) to achieve the required write throughput.
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This is City Guilds Model Questions Vol1 2019 Information Technology Question 18. It is one of the objective questions from the 2019 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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