2x M1015 controllers in same computer

rtangwai

[H]ard|Gawd
Joined
Jul 26, 2007
Messages
1,369
I currently use a M1015 controller w/HP SAS expander for my FreeNAS VM in ESXi 6.5.

I want to put in a hardware RAID1 controller in the ESXi host to hold the datastores.

I got an old Adaptec 3405 RAID controller to do this as it is compatible with ESXi 6.5, but I just found out it has one caveat: it only works if VT-d is turned off.

Since I'm passing through the M1015 controller to FreeNAS that is *NOT* an option.

I am thinking of getting another M1015 as it is relatively cheap, well-supported, and I already have lots of experience with one.

What I want to know is can 2x M1015 co-exist in a single computer if one is in IR mode and the other is in IT mode? I can of course choose which controller is passed through in ESXi, but what I can't figure out is what happens when you mix IR and IT modes.

Should I reflash the M1015 I have now to IR to match the new one? If I do that do the cards have separate configuration utility screens, the configuation utility control both cards simultaneously, or only 1 card can be configured?
 

_Gea

2[H]4U
Joined
Dec 5, 2010
Messages
4,068
No problem using several HBAs, does not matter if you use one for pass-through and one for ESXi or in any other combination. If you would pass-through both you would use a different driver for the IT and IR ones. If both have the same variant you should prefer using the same firmware release.
 

Biznatch

2[H]4U
Joined
Nov 16, 2009
Messages
2,224
Running 2 in my server at home, both flashed to pass-through. There should be no problem running both, even if they are flashed with different modes.
 
Joined
Jan 30, 2003
Messages
3,222
I've run 2x m1015s previously, and currently running 1x m1015 and 1x onboard HBA -- no issues with either setup.
 
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