Q. An I/O system with a single disk gets on average 50 I/O requests per second and the average time for a disk to service an I/O request is 10 ms, the utilization of the I/O system would be

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Q. Bits or blocks in a file going bad over time, is a

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Q. Faults that do not correct themselves with the passing of time, are

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Q. Improvement in capacity is customarily expressed as improvement in

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Q. The time for the user to enter the command, is refered as

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Q. For disks with more than 200 cylinders, the seek distance is:

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Q. One of the most widely used exponential distributions is called a

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Q. The squared coefficient of variance, traditionally called

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Q. Throughput is the performance metric, but response times are

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Q. Redundant disk arrays have become known, by the acronym

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Q. In a RAID disk array, the logical unit is configured as a particular RAID layout, such as

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Q. Average time/task in the system, or the response time, which is the sum of Time queue and Time server is

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Q. Data are allocated to disks in the RAID at the

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Q. The area where the tasks accumulate, waiting to be serviced, is called the

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Q. The Poisson distribution is described by the following equation (called the probability mass function):

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Q. If interarrival times are exponentially distributed, the number ofarrivals in a time interval t is a

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Q. The sum of entry time, system response time and think time is known as

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Q. The average arrival rate of new tasks, and the average time to perform a task is:

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Q. An innovation that improves both dependability and performance of storage systems is

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Q. The I/O bus limits the maximum performance to no more than 18,600 IOPS for 16 KB blocks, then the transfer time would be

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