ATTO does allow the visualization of change in transfer rates as the I/O size changes, with optimal performance being reached around 512 KB for a queue depth of 4 for both SSDs.ĬrystalDiskMark. Interestingly, at QD4, the ArmorLock SSD hits 1.01GBps for both reads and writes, while the G-DRIVE SSD hits 1GBps+ only for reads. ATTO benchmarking is restricted to a single configuration in terms of queue depth, and is only representative of a small sub-set of real-world workloads. Western Digital claims speeds of up to 1000 MBps for the ArmorLock NVMe SSD and 1050 MBps for the G-DRIVE SSD. Yet another use of these synthetic benchmarks is the ability to gather information regarding support for specific storage device features that affect performance. The results translate to the instantaneous performance numbers that consumers can expect for specific workloads, but do not account for changes in behavior when the unit is subject to long-term conditioning and/or thermal throttling. I’m happy to get your feedback in the comments.Synthetic Benchmarks - ATTO and CrystalDiskMarkīenchmarks such as ATTO and CrystalDiskMark help provide a quick look at the performance of the direct-attached storage device.
Hope this helps you with your storage IT work.
#Diskmark vs archive
All that is left is to archive the results or load them into your favorite spreadsheet for analysis and comparison. The output will include the parameters of the test, the name of the machine, the label of the disk and the IO metrics.
All the results, both raw and processed, are written to disk for further analysis in XML/CSV format. Introducing DiskSpdAuto! DiskSpdAuto is a PowerShell script that executes a predefined set of IO tests on a disk or disks without any human intervention. This creates a great opportunity to write wrappers in PowerShell around DiskSpd to accomplish what your heart desires. One nice thing about DiskSpd is that it can output information in XML format, thus allowing you to load the results of the test in a structured manner. The concept is very similar to tools you would typically find in the *inx world (Bonnie++, IOzone, XDD, etc). DiskSpd is an open source project by Microsoft, which delivers a command-line utility to measure disk IO. Since the 2015 version 4, CrystalDiskMark changed and became a GUI layer on top of a recently released IO benchmarking tool, DiskSpd. Unfortunately further UI limitations, such as the inability to use a test file size outside of a short set list of values hinder the effectiveness of this tool in some scenarios. This limitation is partially addressed by using DiskMarkStream, which is a GUI app that can automate CrystalDiskMark. CrystalDiskMark is a wonderful tool, but being a GUI application it is unsuitable for using in an automated environment or when you need to test several disks with several sets of parameters without constant human intervention. If you have followed my previous article titled IO Performance Benchmarking 101, you know that I am a big fan of using CrystalDiskMark for measuring disk IO throughput.
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