Raid and Ahci on the same controller?

S

skullbringer

New member
Hey Guys,
i just got my 2 hdds i wanted to setup as a raid 0. When i switch my sata controller in the bios to raid, i can configure the raid 0, but then my system wont load windows from my ahci ssd. When i switch back to ahci in the bios, i can load windows but the raid array is gone. Is it even possible to have a raid array and a ahci boot ssd running on the same controller ?
 
no mate you can only have one or the other. You should be able to set the single drive as JBOD and boot from it though.
 
I have Win8 and WindowsBootManager does not accept JBOD. Thanks for the quick reply anyways.
I have now plugged my boot ssd into the AsMedia controller set to AHCI and my hdds to the Intel controller set to RAID. Boot times are a bit slower (20 sec) but my rig is almost always on anyways.
 
yes, two Seagate Barracudas.
And the RAID 0 works perfectly fine with almost double the performance of a single drive.
 
Last edited:
actually you can do it. Hate to step over tom on this. Set bios to ACHI. Boot into windows. Go to control panel / system and security / administrative tools / create and format hard drive partitions. And create your raid there with the 2 mechanical drives thru windows raid. In some testing I did a year or so ago windows raid is a tad bit faster. Plus you dont have the bios raid holding up your boot time.
 
In the control panel I could set up the drives as a Raid 0 (Stripe), but the capacity of the volume to select would not have been more then 1.9 TB, so one drive... really curious...
 
then short stroke it (better performance anyways) and create 2 partitions on the raid. I didnt see what size drives you had so I didnt know.

Basically short stroking hdds allows for you to use the outer section of the drive (fastest part normally 10% of capicity) first. then use the rest for another partition.
 
I am perfectly fine with the way it is now. Speeds of 350 MB/s write and read is perfect for my purposes. The boot time only increased by 2 seconds using the AsMedia controller, that is really not a problem for me. Also I have about 1 TB data on it already anyways. So reformating while maintaining the data would be pretty difficult.
 
thats cool then but most would recommend your boot ssd to be on the chipset controller, as some 3rd party controllers dont always play nice with ssd's
 
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