Hello, currently we have two locations that are about 1 mile away from each other (the Pas location and the Alton location). In Pas we have mds1 (vsan100) and mds2 (vsan200). Each host has two hbas - one connects to mds1 and one to mds2. Each storage array is also connected/balanced on each switch. If one switch dies then everything will run on the other switch.
For some reason there is an ISL between mds1 and mds2 (vsan300). It seems to be of no value since every storage device and every host is already zoned to both switches. I would like to remove it as it does not seem to server any purpose. Any thoughts?
The Alton location is almost identical to Pas. It has alt_mds1 and alt_mds2. All hosts and storage are zoned to both switches. It has the vsan100 and vsan200. It also has a similar ISL between the 2 local switches (I'll likely remove this as well).
We are connecting the two sites with dark fiber because some of the AIX hosts in Alton need to connect to the DMX4 in Pas. This will be like long patch cables between Pas and Alton. We will connect Pas-mds1 to Alt-mds1 and Pas-mds2 to Alt-mds2 and then zone the AIX server in Alton to the DMX4 in Pas. Below are the proposed steps.
Remove ISL (vsan300) between MDS1 and MDS2 in both locations (after verifying that vsan300 is not being used)
Plug in two new 4Gbps Long Wave, Single Mode SFPs into each MDS switch
On Pasteur_mds1 create vsan101
Add 1 dmx port to vsan101
On Pasteur_mds2 create vsan201
Add 1 dmx port to vsan201
On Alton_mds1 create vsan101
Add HBA1 port from AIX p520
On Alton_mds2 create vsan201
Add HBA2 port from AIX P520
In Pasteur Plug in 4 ISL cables - two in mds1 and two in mds2
In Alton Plug in the other ends of the 4 ISL cables - two in mds1 and two in mds2
Verify that the mds ports show as E ports (no other config required unless we choose port channeling etc.)
Zone each HBA for Alton p520 to the appropriate dmx port
Activate and distribute
As we continue to add new AIX hosts in Alton that need to connect to the DMX4 in Pasteur - we will add the new HBAs to vsan101 and vsan201 in Alton.
We have 4 ports used for AIX on our DMX4. With this design we would leave one port in vsan100 and 1 port in vsan200 in Pas. These two ports would be used for connecting local Pas servers. We would then put the third port in vsan101 and the forth port vsan201. These 2 ports would be used by servers in Alton that need to connect to the DMX4 in Pas.
Does this plan make sense? Is there a better approach?
Thanks - Brad