Q. Adding the 0.1 ms ATA controller overhead means 0.2 ms to 0.5 ms per I/O, making the maximum rate per controller

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Q. Server utilization (and, in this case, the mean number of tasks per server) is simply:

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Q. The operating system typically provides the file abstraction on top of blocks stored on the disk, called

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Q. When this effective error produces erroneous data that affect the delivered service, then

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Q. RAID 0 has no redundancy and is sometimes nicknamed as

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Q. Improvement in capacity; measured in bits per square inch, refered to

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Q. A server utilization of 0.5, the mean number of I/O requests in the queue is

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Q. The disks found inside a server connected to an I/O bus, is refered as

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

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

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

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

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

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

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

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

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