Question: Some parallel database systems store an extra copy of each data item on disks attached to a different processor, to avoid loss of data if

Some parallel database systems store an extra copy of each data item on disks attached to a different processor, to avoid loss of data if one of the processors fails.

a. Why is it a good idea to partition the copies of the data items of a processor across multiple processors?

b. What are the benefits and drawbacks of using RAID storage instead of storing an extra copy of each data item?

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a The copies of the data items at a processor should be partitioned across multiple other processors ... View full answer

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