I am inclined to believe that someone ran a test on a 4-way SMP system the standard for high-end databases, may be a ProFusion 8-way , finding that 2 files was better than one and 4 files was better than 2, but not necessarily 2X better, perhaps just 1.
I recall hearing that PFS contention was reduced in SP , but the use of tempdb increased in some version. In any case, a test based on a 4-core system should not be extrapolated too far, perhaps 8, but definitely not 32 or 64, especially since the original reason has since been partially resolved.
In high-end systems, storage is distributed over multiple volumes and multiple IO channels. Heavy volume filegroups should one or two files per volume and path. He holds a Masters of Science degree and numerous database certifications. Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service.
This enables for fast execution of these file operations. For more information, see Database File Initialization. The following example increases the size of one of the files added in example B. This example shrinks the size of a data file to MB, and then specifies the size at that amount.
The following example moves the Test1dat2 file created in example A to a new directory. You must physically move the file to the new directory before running this example. The following example moves tempdb from its current location on the disk to another disk location. The files are created when the service is restarted in step 3. Until the service is restarted, tempdb continues to function in its existing location.
Determine the logical file names of the tempdb database and their current location on disk. The following example makes the Test1FG1 filegroup created in example B the default filegroup. The filegroup stores memory optimized data.
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