@100PIER

perhaps this was the reason but obviously i made a mistake. i didnt read the release notes when i upgraded to v15 before. i chose the supported os but i didnt notice certain platforms were not supported

@Fernando

yes i did switched the ahci/raid mode in bios but just to reflect the true situation whether the raid was in use or not. and i used to install both the ahci and raid drivers during upgrade. it could be due to my poor english and didnt describe the whole picture very clearly. i am sorry about that

hi @100PIER and @Fernando, I have an X99-A/USB 3.1 also ! and some problems with the RAID, I am trying many things for two days until I reach this forum, well, about my configuration:
MoBo: ASUS X99-A/USB 3.1
Processor: Xeon E5 2609 v4
SSDs: Team Group T253X1960G x 4
As far I see, the MoBo has tho intel SATA controllers, the first has 6 ports (2 of them are for a express sata) they are the "grey" connectors and the second has 4 ports that not support RAID (only AHCI)
I installed the 4 disks on differents ports between those 6 (that supports RAID)

The problem:
When I enter the BIOS, the 4 disks are listed, but only 3 of them are able to create the raid, for example, when I plug the disks on: ports 0,1,2,3, only 0,1,3 disk are shown to create the raid, When I plug the disks on ports 2,3,4 and 5, only 2,3,5 are listed to create the raid.
I also tried installing only 3 disks on ports: 0,1 and 2, this time, the 3 disk are enabled to configure the raid, I did this to see if there is a faulty port but not, all ports are OK!
I have read the complete manual and there is no quantity limitations on the disks that can be part of a raid, it is supposed to handle 6 disks as limit.
I tried configuring the raid via F11 key (Wizzard) and through the "CTRL +I" prompt, same results!
I am putting some bios screenshots.
I also made some Windows 10 - 1809 installations, two of them may be interesting:
ONE:
I installed the OS on RAID 0 (formed by 3 disks only) ports: 0,1,3 after a successful installation I added a 4th disk on port 2: the RAID status maintains OK since (as I said before) when using ports 0,1,2,3 the RAID takes ports (0,1,3) same ones for the OS installation, but Windows cannot start, as soon as I remove the port 2 disk Windows starts again.
TWO:
I installed the OS on a separate M.2 disk and create the raid using ports 0,1,2,3, Windows installs OK! but when I install IRS software it can not run giving a unknown error, as soon as I remove some of the 4 disk (tested with each one) the software runs perfect!, and it says that the raid is using three ports (i.e. 0,1,3) and there are 3 free ports (i.e. 2,4,5)

The only thing I could not find information about is the Processor support, is this possible that I have the problem since I am using a Xeon processor?

Thanks a lot in advance for your help !!!

Thanks, well the disk a completely new,

Zitat von Fernando im Beitrag #34

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@fsalazar:
Welcome to the Win-RAID Forum!
Since 100PIER knows much more about X99 chipset RAID problems than me, you should wait for his reply.
You obviously have tested the function of all 6 Intel SATA ports, but did you test the health condition of all SSDs as well? It seems to me, that the 3rd SSD may be faulty or still a member of a previously created other RAID array.
Regards
Dieter (alias Fernando)

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@fsalazar
on my side i do use a different CPU and RAID0 only and do build RAID0 Array thru BIOS menu interface.
I don't use Intel Software package, but only pure Intel driver.
Here is a screenshot with 2 SATA RAID0 up and running on Controler 1, Controler 2 does accept only AHCI mode.


I am perplex why you get such limitations.
All storage devices are GPT partitionned:

thanks, I see that you have same BIOS version and same RAID controller!. The only notable difference is the processor, have you tried to make a RAID 0 with more than 3 disks?
In my tests, using only three disks (ie. ports 0,1,2) the three ports become available for RAID so it's OK!

NEW test: 6 disk, ports: 0,1,2,3,4,5: ALL of them become available! see attached images


it would be great that you @100PIER test your RAID 0 with 4 disk!
and, well, there is no limitation of disk quantity i think, it seems that it's just a bug?, maybe it only happens with Xeon processor? how to solve?, what would you suggest?
One more question, since you don't use intel software, which software are you using?
thanks in advance for your time !

you are right, it's for test purposes, the original idea was to have RAID 10 with 4 disks, but you see, can't use 4 disk! that's the problem...

SOLVED !
Hi, the problem was that 2 of the 5 SSD had the same serial number !!!
The disk is:

The first one is:

And the second:


You ca see that the external serial number is different from the internal one !

Thanks a lot for your time, hope this thread helps someone else!

Thanks fsalazar for your comments about serial numbers.
May be via MiniTool Partionner you can force the disk serial number to a proper value.
I have never tested more than 3 disks for a RAID0 because as Fernando said it does not provide any interest for performance reason and reliability.
To create and delete RAID 0 array I do use only the specific BIOS menu interface offered by ASUS.