GA-990FXA-UD7 + RAID 0 SSD performance (GSATA/Marvell chipset)

[amenic]

I have two Sandisk extreme 240 GB SSDs in RAIO zero using the GSATA / Marvel RAID controller and I'm seeing sub part SSD performance when I bench mark (latest firmware has been applied to both drives)

According to the specs I should get getting 500+ mb/sec RW on these but I'm only getting 200-300.  I figured the RAID would speed things up and I also read on the box that the system is 4X faster than normal SATA when in RAID 0 so why am I not getting better rates?

Does anyone have any ideas?   Should I use the AMD RAID instead?   Would I have to re-install my OS when I break my break to do this or do I just need to change up the cables on the board?

Also, how does one put these drives into RAID 0 and use enable AHCI support (without causing issues).

Thanks!

EDIT:  using bios version F9

amenic

[absic]

Hi there,

If you want to use the AMD controller for RAID then you will have to start again.

You might want to check through this review: http://forum.giga-byte.co.uk/index.php/topic,5704.msg45816.html#msg45816 Although it is for the UD5 it might give you some indication of what to expect from the two controllers in RAID 0

If you enable RAID on the AMD Controller AHCI is automatically applied to drives that are not part of the Array and from my own experience this doesn't cause any issues.

[Ripshod]

Even though your Marvel SATA controller is SATA3 these controllers often struggle.

Better to use the southbridge for RAID, SATA3_0 to SATA3_5.

[thexfile]

Bios F10 is current for GA-990FXA-UD7.

[Ripshod]

If you enable RAID on the AMD Controller AHCI is automatically applied to drives that are not part of the Array and from my own experience this doesn't cause any issues.

That's bang on. Any drives that are not part of a RAID array are passed to the OS as AHCI drives.

[amenic]

If I use the south bridge and create the RAID array do I have to used specific ports (channels)?

i.e.:  can I say these two are for RAID and treat the rest like typical SATA3 ?

Thanks folks - I got the impression from the box that the 2 slightly different colored ports were the 'fastest' obviously doesn't sound like that's the case.

I guess I'll use them for my slower driver and my DVD.

[Ripshod]

You only need to specify the drives really, so long as you don't move drives around the ports after building the RAID. those not assigned to any array will just be standard AHCI SATA drives.

Marvel controller for DVD? very apt lol

Once you build a RAID array keep those drives on the same ports. Any single drives can be plugged/unplugged on any of the other ports.