I like using a 64GiB file if I’ve got the luxury of more time for testing, but it really will write out 64GiB of data, so make yourself some coffee. A small 1GiB file will finish the test quickly, but if your storage has a caching component, you might get deceivingly fast results. If you’re testing an already-in-production server, just do 1 test, but if you’re testing the bejeezus out of one before going live, use more tests. If you only run one test, it’ll finish quickly, but it’ll be vulnerable to other activity running on the server at that moment. 1 = the number of tests you want to run.Then, across the top there will be 4 dropdowns: Note that I don’t try to get CDM to replicate exactly how SQL Server does IO: I’m just trying to get a quick 5-minute idea of whether my storage is hot or not. The Peak Performance + Mix setting runs a pretty cool mix of tests that will push your storage hard. Start by downloading it and installing it – sadly, there’s no zip file version anymore that you can stick on a network share and run remotely.Īfter it launches, click the Profile dropdown at the top: This month, CrystalDiskMark released an all-new version 7, and it makes for even better testing. I bet you wanna know whether your storage is hot or not, and there’s no quicker, easier way to get a rough idea of your storage’s capabilities than to fire up CrystalDiskMark.
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