Change nvme to legacy mode after using it in raid mode


  1. sgtsixpack
    Posts : 57
    Win10 Pro N installed AND activated
       New #1

    Change nvme to legacy mode after using it in raid mode


    I'm using Win 10 pro N in RAID mode (I installed initially to a RAID10 array of 4 x 14TB wd140emfz from elements enclosures), and I have just noticed that while defragging the RAID10 array and simultaneously benching a data free Sabrent Rocket 4.0 1TB that the NVME's performance numbers tanked, and recovered once smart defrag moved onto a partition not on the RAID10 array.

    So with this info (I had an 850 & 860 evo in single drive raid array mode and never noticed performance degradation), I want to set all my SSDs to legacy mode which means that they use their onboard cache for write caching (the DRAM part which users commonly state as being a higher quality SSD if it has one).

    I never changed my new MX500 2TB to single disk raid array mode, so that's left unchanged. I've reverted my 860 evo 1TB to legacy mode. My 850 evo is disconnected (have an enclosure for that), will hopefully just switch back to legacy as its not on a sata port.

    My new m.2 NVME Sabrent Rocket 4.0 1TB seems to be stuck in either single drive raid array mode or unrecognised by the OS.

    There are a few bios options. One SATA mode AHCI or RAID switches on the RaidXpert module of the bios. There is a NVME RAID mode option, disabled by default (from the manual). There is an entry for NVMe Configuration which "displays information on your M.2 MVME PCIe SSD if installed.

    I have tried checking my options in disk management while the drive is in single disk raid array mode via the bios, and tried the raidXpert2 software too. I've tried deleting the array and trying to install windows 10 on it, but it failed even when pointed to raidbottom driver (there are 3 different directorys which I could try for the correct driver), but to the best of my knowledge I've already integrated these drivers into the install media. I've also tried using the diskpart command in the command prompt, but I think this only effects the drive as seen by software as opposed to how the bios sees it.

    So I could try to install windows 10 on one of my externals or my 850evo in an enclosure (assuming I can get that out of single disk raid array mode), and set the bios to sata mode: AHCI. This might give me more options in disk management.

    Its probably not a common issue that comes up here but I got myself banned from spiceworks because I got the hump after they were like you're using software raid and I have a server ect. I have a UPS which is my best bet against sudden power loss (and the fact that the data in a RAID10 is temporarily in system ram which is ofcourse volatile), and they were turning their noses up and saying that had battery backed up cache either on the motherboard or drive itself. I heard the MX500 has powerloss immunity which is one of the reasons I didn't try it in single disk raid array mode. win10 v2004
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  3. ignatzatsonic
    Posts : 2,487
    Windows 10 Home, 64-bit
       New #2

    Not sure of your goal.

    Are you willing to give up on RAID..............completely??
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  4. sgtsixpack
    Posts : 57
    Win10 Pro N installed AND activated
    Thread Starter
       New #3

    I want to keep my raid 10 array but stop using my SSDs which all have onboard cache as a single drive raid array. Take a look at the 4th screenshot down. That is a result of defragging my raid10 array and it ending before the nvme benchmark finished.

    Storage benchmarks - Album on Imgur
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  6. sgtsixpack
    Posts : 57
    Win10 Pro N installed AND activated
    Thread Starter
       New #4

    Do u need nvme raid enabled to see the m.2. In windows? : gigabyte

    Basically its a simple driver switch from the device manager (choose browse and then select from a list and choose standard NVME contoller driver). The name appears after you go to update the driver, for me it was the top item in the list.
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