Inspiron 7520 SE - Intel Rapid Start / Intel Rapid Storage

@xxxlolo  RAID requires more than one disk, and Optane requires an actual Optane device, not just a regular SSD.  The Acceleration feature you're referring to was Intel Smart Response, but that was intended to be used in systems that had a regular spinning HDD (not an SSD) and a small SSD cache module.  In that case, the SSD cache became an accelerator for the HDD.  But Smart Response doesn't apply to full SSDs.

Intel Rapid Start was a way to make it faster to hibernate your system and resume from hibernation, once again by writing the hibernation data to the cache module instead of the disk.  But in that case you had to allocate an amount of storage on that cache module equal to the amount of system memory you had, and then you couldn't use that capacity for Smart Response.  So for example if you had 16 GB of system RAM and a 32 GB cache module, 16 GB would have to be dedicated to Rapid Start and therefore only 16 GB would be usable for Smart Response.  Many users preferred to have a 32 GB cache for Smart Response instead because they wanted faster performance while running rather than faster hibernation, especially if they didn't use hibernation at all.

But none of this applies when using a single full SSD that is not an Optane device.  For that setup, there's nothing in the Rapid Storage application that would be useful to you, in fact there's no good reason to use RAID mode in that case.  It would be easier to just use AHCI.

@xxxlolo  Ok, I just realized I may have misread your post.  I thought you said you had a 320GB SSD.  Now I see that you wrote "32GO".  If that was supposed to be a 32GB cache module, then yes you should be able to use Smart Response.  If you don't see that, then try installing the Rapid Storage application version available for your actual system on support.dell.com instead of getting the one directly from Intel.

Thanks a lot for the reply! It helps.

I desinstalled everything and downloaded from dell support website the intel rapid storage driver version 12.8.2.1000, A05.

New issue: the installation is aborted because the program sees a newer version/driver installed.

Probably some remains in the register or somewhere else...

Found:

Managed to fix this by simply deleting the corresponding registry entries "RST downgrade guard" under HKEY_CLASSES_ROOT\Installer\products\