This is a discussion on Vdbench and SSD alignment, continued. - Solaris Rss ; Of course, it took only a few minutes before someone asked 'how can I run this against files, not volumes'. Here is the response: Just change the lun to a file name (use the same file name each time) and ...
Of course, it took only a few minutes before someone asked 'how can I run this against files, not volumes'. Here is the response:
Just change the lun to a file name (use the same file name each time) and add a size.
Vdbench then will first create the file for you.
The problem will be that you need to make sure Vdbench will not read from file system or file server cache, so the file size must be at least 5 times the system's cache size,
Unless of course you mount stuff directio, but then you still have the file server cache to deal with.
Just take your time and create a large file (I am using 100g). Vdbench will automatically create it for you.
BTW: the elapsed time the elapsed time needs to be long enough to make sure you get away from cache. I set it here to 60 seconds, which should be a good start..
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