SATA Controller Modes Explained
Depending on your system, multiple SATA controller modes might be available in your BIOS or UEFI to manage how a SSD operates with the rest of your system.
AHCI (Advance Host Controller Interface): The modern standard for SATA controller operation, this provides the best performance possible with a SATA storage device, combined with the best support for features to optimize an SSD's performance, such as Trim. We recommend this mode for a majority of our users, and deviate from this advice only to address compatibility and software problems.
IDE (Integrated Drive Electronics): A legacy standard dating back to the 1990s. Due to slower performance and worse support for modern hardware, we don't suggest using this mode if AHCI can be used. An exception to this is if you are experiencing system instability using an SSD in another mode and need to use this mode for compatibility and testing purposes.
Note that the above modes may be reference differently by some motherboards, such as AHCI being called "Serial ATA" or IDE being labelled "Legacy" or just "ATA." If your SATA modes are not described in an obvious way, please refer to your system or motherboard documentation for clarification.
RAID (Redundant Array of Independent Disks): A configuration in which multiple drives are effectively merged into one for stability and performance benefits. There are multiple variations of this, and support varies greatly from system to system. We are unable to support a RAID system directly, but for disks in an array that are suspected to have failed, if your RAID does not provide detailed information on failures another method for testing is disabling RAID configurations and testing individual drives outside the array. If independent drives are confirmed to be malfunctioning, please contact us for further support.
With all of these modes, if you have one mode set prior to installing your operating system, changing these after the fact might require advanced drive configuration or reinstallation of your OS. Please refer to support for your OS for more details and guidelines for making changes to these settings without reinstallation.
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