RAID levels that don't involve parity (0, 1, 10, linear) incur essentially no CPU load. Even with a full RAID 5 resync in progress with many fast drives, you're unlikely to see more than 25% CPU usage, and that's just on a single core, these days you probably have at least 4 cores. You might not have noticed, but in the last decade or two, CPUs have become very fast, greatly outpacing hard drive speed. Well, that all sounds great, but what about performance? The good news is that performance of Software RAID is generally on par with Hardware RAID and almost always (significantly) better than Fake RAID. Furthermore, you can add in as many drives as you'd like and compose them into the same array, hanging them off the ports on the motherboard, ports on an expansion card, external drives, drives on the network. That is, take an n drive array with n-1 capacity, add an additional drive and (completely online) end up with an n+1 drive array with n capacity. Of particular note is that you can grow a RAID 5 array completely online (it calls this feature reshaping). Mdadm of course supports all of the features you'd expect like hot spares, hot swappable drives (hardware permitting), but it also has several other useful features. You can also physically rip the drives out of one machine, plug them into another, and your RAID array(s) will continue working as before, with no twiddling needed. You can also arbitrarily nest RAID devices, so you can create a RAID 0 of RAID 6s of RAID 1s if that's what floats your boat. You can mix and match RAID levels using RAID 0, 1, 4, 5, 6, 10 and linear (linear not really being RAID per se, but it's handled by the same framework). In Linux, you can create RAID devices using any regular block device (including whole drives, partitions, regular files, other RAID devices, etc) with mdadm. Your kneejerk reaction is probably that this would be the worst option, throwing more hardware at a problem always makes it better, right? Well, sadly (or happily in this case), no. Rather, I'll explain the benefits (and downfalls) of the 3 main types of RAID implementations, as this information is not widely available and misunderstanding or misinformation is very common. Note that I won't discuss the benefits (and downfalls) of RAID itself, as this information is widely available. I'll explain the differences and why they matter below. Problems can arise when your hardware device is too old or not supported any longer.RAID RAID (or, why you don't want to use the "RAID" provided by your motherboard) This will help if you installed an incorrect or mismatched driver. Try to set a system restore point before installing a device driver. It is highly recommended to always use the most recent driver version available. In addition to that, don't forget to constantly check with our website so that you don't miss a single new release. So, if you intend to modify the SATA settings to the mode described by this release, click the download button, and make the desired changes. Afterwards, perform a system reboot so that all changes take effect, enter BIOS menu, and set the SATA option to the mode that best describes the newly applied drivers. To perform the latter task, get the package, run the available setup and follow the instructions displayed on-screen for a complete installation. If you want to change from one mode to another after the OS has been applied, appropriate drivers are required.īear in mind that if you modify these settings without installing proper files first, the operating system will not be able to boot until changes are reverted or required drivers are applied. When you install an operating system, SATA settings (be it AHCI, RAID, or IDE mode) are detected from the BIOS. Close the wizard and perform a system reboot to allow changes to take effect. Read EULA (End User License Agreement) and agree to proceed with the installation process. Allow Windows to run the file (if necessary). Locate and double-click on the newly-downloaded file. Save the downloadable package on an accessible location (such as your desktop). Make sure that all system requirements are met. To install this package please do the following: Supported RAID Levels RAID 0, 1 and 10 for both NVMe and SATA RAID on the above listed AMD products AMD Ryzen Desktop Processor with Radeon Vega Graphics SATA RAID only for Windows 7 and both NVMe/SATA RAID for Windows 10 For detailed instructions on how to use the AMD RAIDXpert utility, please refer to the associated user's guide. This tool allows you to monitor and manage your RAID arrays in the Microsoft Windows environment or via remote login to your system. The AMD RAIDXpert utility gives you complete control of your RAID arrays within a simple web browser based application.
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