Tuesday, November 13, 2007

Zoning







On this page, we are going to discuss how a Host might be zoned through switches to a Clariion. This host has two(2) Host Bus Adapters. From the previous page, we know that the host must have at least one connection to SP A and one connection to SP B. What we are illustrating here is from the “Host to Clariion Configuration” page, Configuration Three. We are also going to look at what is meant by “Single Inititiator Zoning”. Single Initiator Zoning means that you create a zone with one HBA entry. We don’t want to have a zone that would contain an HBAs from two(2) Hosts.


HBA1 is connected to Port 0 on the switch. SP A port 0 is connected to the same switch at Port 14. Based on the World Wide Names of HBA1 and SP A port 0, we can now create a zone through the switch software. The zone could look as follows:


Zone HBA1 to SP A port 0
10:00:00:00:07:36:55:86
50:06:01:60:10:60:08:74


We also want to connect HBA1 to SP B. We connect SP B port 0 to Port 15 on the same switch. That zone could look as follows:


Zone HBA1 to SP B port 0
10:00:00:00:07:36:55:86
50:06:01:68:10:60:08:74


HBA1 is now zoned and connected to both Storage Processors on the Clariion.
We would repeat the same steps for HBA2 and the switch that it is connected to. HBA2 is connected to Port 0 on the switch. SP A port 1 is connected to the same switch at Port 14. Based on the World Wide Names of HBA1 and SP A port 1, we can now create a zone through the switch software. The zone could look as follows:


Zone HBA2 to SP A port 1
10:00:00:00:66:87:35:20
50:06:01:61:10:60:08:74


We also want to connect HBA2 to SP B. We connect SP B port 1 to Port 15 on the same switch. That zone could look as follows:


Zone HBA2 to SP B port 1
10:00:00:00:66:87:35:20
50:06:01:69:10:60:08:74


Another way in which the zoning could have been done is:


Zone HBA1 to SP A port 0 and SP B port 0
10:00:00:00:07:36:55:86
50:06:01:60:10:60:08:74
50:06:01:68:10:60:08:74


Again, there is only one HBA in that zone. The preferred method is simply up to you and how you want to manage the switches. The advantage of doing it this way is that it cuts the number of zones on the switch in half, but could be a little confusing (which could be nice for job security).
Now, what do we do if there is an HBA failure? First of all, that never happens. (Kidding) This is where we go to the four(4) steps listed under HBA Failure. The three R’s and a D. Let’s say that HBA1 were do fail. The first thing we would do is to replace that failed HBA. Next, because we did our zoning on the switch based on the World Wide Names of the HBAs, we would have to rezone the switch for the new HBA because it would have a new World Wide Name. The third step is to go to Navisphere, and using Connectivity Status, Register the new HBA with the Clariion. And finally, the Clariion does not automatically clean itself up. You would have to again, in Connectivity Status, Deregister the failed HBA.

4 comments:

Anonymous said...

with this explaination. even a layman can understand what is zoning.. terrific stuff you have here..

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Anonymous said...

Quetion, do we have to do zoning again for the failed HBA.does the new WWN report to the same Fport which is already zoned.? Please clarify when you have some free time.

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