3 ms·
Except that's an inaccurate assumption. If you actually read the specifics about the situation, you'll learn that the SSD is set up in RAID mode, and the Intel
by Hydraulix989 10y ago
Except that's an inaccurate assumption.
If you actually read the specifics about the situation, you'll learn that the SSD is set up in RAID mode, and the Intel hardware also supports AHCI mode.
Acronis and all other OSes do not have driver-level support for this new experimental RAID hardware at all; they do support AHCI, of course, like they have for years.
The BIOS normally has an option to revert the hardware back to normal AHCI mode, but Lenovo intentionally restricted the Advanced page in the BIOS containing this option (which is available and unrestricted by default in the BIOS code they received from the manufacturer) by adding a goto statement to the BIOS's code.
- ocdtrekkie 10y agoMy understanding is that experimental support for the new RAID mode in Linux already exists. AFAIK, Acronis boots a Linux-based OS, and they were able to get it to support the Surface Pro 4 when it's using that mode, so presumably, they figured it out. As far as why Lenovo restricted it, it's likely for the same reason Lenovo was prohibited from preinstalling software. Signature PCs claim to have the "best" performance settings, mandated by Microsoft. If NVMe is superior to AHCI, Microsoft would sensibly mandate NVMe.
- Hydraulix989 10y ago"My understanding is that experimental support for the new RAID mode in Linux already exists." That is not true, many users have tried using the very latest bleeding edge kernel. The drive is not detected at all by Linux when it is in RAID mode. The usual fix is to disable RAID mode and just use AHCI. On most sane systems (but not Lenovo), you can do this easily by changing a single BIOS setting. Also, my understanding is that the benchmarks show no appreciable performance benefits of single-drive SSD RAID over AHCI.