Solved!
Go to SolutionMD3220i raid controllers
Hi,
I'm sorry if this is covered in the documentation but i havent found anything clear on the issue.
Do the raid controllers on the MD3220i just load balance/share all the disks? or do you have to assign a group of disks or a virtual disks to one of the controllers?
I'd like to try and spread the workload as evenly across the two controllers as I can.
Advice appreciated.
S.
Hosts should always be connected to both controllers. Keep in mind that each iSCSI port number needs to be on a different subnet.
This is why the factory default iSCSI IPs are:
0-0: 192.168.130.101
0-1: 192.168.131.101
0-2: 192.168.132.101
0-3: 192.168.133.101
1-0: 192.168.130.102
1-1: 192.168.131.102
1-2: 192.168.132.102
1-3: 192.168.133.102
So a server with 1 NIC (for iSCSI) should log into both controller 0 port 0 as well as controller 1 port 0.
So does that mean that it doesnt matter which ports on the controllers my hosts are connected to - they should be able to access the virtual disks as long as they're been permitted to do so? I had thought that if controller 0 was in control of a virtual disk then a host would have to be plugged into ports on that controller? but if vd's ared dynamically shared between both controllers - i can just plug the host into either controller ? or both?
Dev Mgr
6 Operator
•
9308 Posts
•
3 Points
1386
1
Posted October 5th, 2011 11:00
A virtual disk is indeed owned by 1 controller at a time, so you split your virtual disks between the controllers to balance it out a bit. By default the virtual disks get assigned back and forth between the controllers.