Why should log files be stored on a different physical disk from data files?
What will be an ideal response?
Data and log files are stored on different physical disks due to the following:
* If the physical disk that stores the data files becomes damaged, you will need the log files to recover the database and avoid data loss. If the log is sitting on the same physical disk as a corrupt or damaged data file, there is a high probability that the log files will also be lost.
* Storing data and log files on the same physical disk increases the likelihood of contention. Contention is the term used to describe a situation in which two processes compete for the same resource, in this case the physical disk. The result is an increase in the workload the disk must perform, which in turn increases the odds that a process will have to wait for another process to finish before it can write to the disk.
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