Split mode is only a valid option when connecting the MD1000 to 2 PERC5E/PERC6E controllers (usually in 2 different servers). When you look at the MD3000i cabling guides, specifically those that show MD1000's daisy chained off of the MD3000i, you'll see that they all show the MD1000 connected with 2 cables. What they are talking about in that section is that if 1 EMM fails, the virtual disks will fail over to the other raid controller, however, after the faulty EMM is fixed (replaced), the virtual disks won't automatically move back to their original raid controller. You'll have to do it manually yourself (under the modify tab and the section to change current/preferred owner).
Running our Hyper-V cluster on our MD3000i. We purchased the MD1000 off the Dell Outlet so that we could use it to store our Virtual Disk Copies on and also to potentially hold some or all of our desktops once they are virtualized. The MD1000 came from Dell with 1 SAS cable even though it has 2 EMMs in it. I read the documentation and the comparisons between a unified and split setup. Am I correct that since we will be connecting the MD1000 to a MD3000i, which is equivalent to connecting it to one host, that the unified setup if what we will be doing? And if so do you need to use two cables? I've heard the MD3000i may complain about lack of redundancy if not. The picture of the unified setup assumes you're connecting the MD1000 to a host and not an MD3000i and shows only 1 cable. Also the documentation also makes a statement about failover I don't quite understand. Failover does not include providing connectivity to the drives controlled by the failed EMM. When a failed EMM is replaced, enclosure management functions do not automatically return to the replaced EMM unless an additional failure occurs that triggers another failover event. Now does this mean when you have a split setup where an EMM controlling half the drives fails? And this means in a split setup the MD1000 in a failover all of a sudden in effect become a unified setup? In a unified setup am I correct that if an EMM fails that the other EMM will take over and be able to provide connectivity to all drives?
Connecting MD1000 to MD3000i question...