This data compression technique can only save data at the manufacturer’s claimed speed when storing simple files or simple data, such as blank data. Some models of SSD cannot save video data at the speed indicated by the manufacturer because the disk uses hidden data compression to reach these higher write speeds. Important note about Solid State Disk (SSD) speeds 1 stream of 1080p59.94 video at 59.94 fps per stream.1 stream of 1080p50 video at 50 fps per stream.2 simultaneous streams of 1080i50 video at 25 fps per stream.This storage speed is capable of supporting the following video formats: If the result for “HD 1080” is 70, you can run up to 70 frames of HD 1080 video per second. The “How Fast” results panel also enables you to see how many streams of video can be supported by your disk storage. In this example, it would be best if a conventional disk array of hard drives showed performance of at least 30fps to be safe. However conventional hard disks slow down significantly as they fill up and a larger safety margin is required for reliability. SSD storage does not fluctuate much in speed and so an SSD disk array would not need to perform much faster than the video format. A faster disk array or a less demanding video format should be used for reliability. If the “Will it Work?” panel shows a green checkmark for 2K in 10 Bit YUV 4:2:2, but the “How Fast?” panel shows that a maximum of 25fps will be supported, the disk storage performance is too marginal to be reliable. The “How Fast?” results panel shows the frame rates your drive can achieve in frames per second and should be read in conjunction with the “Will it Work?” panel. To stop the test, click the Start button. Notes: The entire test takes about 16 seconds, but it repeats over and over again. Click the Speed Test Start button and watch as the information loads on the screen.Click the Settings button, then choose the size of the Stress file the application uses.In the left panel of the Finder screen, choose the disk or Mac volume you want to test, then click Open.Click Select Target Drive in the drop-down menu.Click the Settings button located above the Start button.Launch disk speed test from the Applications folder or by using the Launchpad on the Dock only for Mac. When you are ready to test Mac’s internal or external drive: How to Run the Blackmagic Disk Speed Test Note that this test is particularly useful to certify the performance of your hard disk for working with high-quality video. In order to do this, it only fills in the free space on your hard disk by a sample of data and begins the assessment to determine these two parameters. Designed for Macintosh, this tool uses a standard method to determine the reading and writing speed of your hard disk. We have ran 1GB to 5GB file size test in Disk Ptcl speed test tool.The Blackmagic disk speed test is an easy-to-use tool to quickly measure and certify the performance of your hard drive. As we confirmed the setup, connectivity and configuration with our technical team. To access the performance of the storage, we have used the Black Magic Disk speed test. We have a created a storage LUN and mapped to the MacOS server. We have been connected our storage to the MacOS 10.1 host server. This is quite urgent, thanks a lot in advance!! Could you please help us to clarify the above questions. 4k or 16k or 64k etc) is writing & readin?īecause of these issues, we couldnt access the exact performance of our storage, we have really confused with the results. Also please let me know, the way it performs the test for 1,2,3,4,5 GB file size? Is there any difference in writing the pattern? or any other constraints or different tool limitations for different file size?ģ. Therefore 8*800=6400 MB/s is bandwidth can support. Why so much bandwidth difference between 1GB &2~5GB file size? why the performance degraded for 1GB file size? Our fiber channel port can up to 800MB/s, we have connected 8 Fiber Channel ports. Here are the approximate results as follows,ġGB - 70 MB/s for write & 65 MB/s for readĢ~5GB - 1380 MB/s for write & 1410 MB/s for readġ. We have ran 1GB to 5GB file size test in Disk speed test tool.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |