Fibre Channel (SAN)

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New Contributor
Posts: 3
Registered: ‎03-23-2012

ONLINE SAN MERGE

hello all

I have to merge two fabrics online, with a minimum of outage.

One of the scenario is :

- all zones, alias are not duplicated in the two active configs

- all DIDs are unique

- fabric parameters have same values on all the 2 fabrics switches 

- the active configuration  in each fabric has the same name : F_120413)

The D-Day, interconnect with an ISL two switches from the different fabrics.

Expected result is:

- fabric rebuild

- configurations merge as config have same names on both fabric

Is this a scenario that can be validated?

How long will take the fabric rebuild (freeze of the fabric) ?

I never seen some doc or clear guidelines/process for this .. so any help or comments should be appreciated

Regards

Pat

External Moderator
Posts: 4,907
Registered: ‎02-23-2004

Re: ONLINE SAN MERGE

--->>>-all zones, alias are not duplicated in the two active configs

what you mean with "not duplicated"

if you want to merge both switch i a single fabric, zoning config must be the same otherwise segmented

TechHelp24
New Contributor
Posts: 3
Registered: ‎03-23-2012

Re: ONLINE SAN MERGE

Hello

When I said not duplicated, means that each zones or alias only belong to one fabric

if I simplify, my config :

on first fabric

one active config named F_120413

containing

one zone named Zone_1 who has twomembers named Alias_1/WWN1 and Alias_2/WWN2

on second fabric

active config named F_120413

containing

one zone named Zone_2 who has twomembers named Alias_3/WWN3 and Alias_4/WWN4

I read that in this case, after just connecting an ISL , the results will be automatically:

one fabric

with an active config named F_120413

containing

one zone named Zone_1 who has twomembers named Alias_1/WWN1 and Alias_2/WWN2

one zone named Zone_2 who has twomembers named Alias_3/WWN3 and Alias_4/WWN4

Is it wrong ?

Regards

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: ONLINE SAN MERGE

Hi,

Unfortunately that is wrong. In order to merge two switchs into the same Fabric, the two zonesets must be exactly the same, not only the active config but also all the zones in it..

In order to merge the two switchs together, you have to add all the zones in one switch active config to the other one and viceversa.

Kind regards,

Felipon

New Contributor
Posts: 3
Registered: ‎03-23-2012

Re: ONLINE SAN MERGE

yes felipon

thanks for this, and it's the status I made also.

I see two options:

- add zoning from first fabric to second one before the merge , and add zoning from fabric 2 to fabric 1 before doing the merge. I tried using the downloaded configs , but it seems tricky. Do you have a good and secured way to manage this zoning merge before doing the merge?

- do the merge after the ISL connection:

Fabric 2

defined: cfg2

zone2: ali3; ali4

effective: none

Fabric 1:

defined: cfg1

zone1: ali1; ali2

effective: cfg1

After the ISL connection and the merge, we have:

- cfg1 as the effective configuration on all switches.

- then I need to add all the zones defined in cfg2 to the cfg1 configuration and enable this new configuration (this can be prepared with a script)

What is your feeling about these two options, and do you see other options..

Patrick

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: ONLINE SAN MERGE

Hi,

The least disruptive way would be the first one you've mention, but I do not know any special way to do it.

The second option would be more confortable for you, because you'll have, once merged, all the cfg2 zones in Fabric2 switch and you will just have to add them to the effective zoneset (via GUI is very easy and fast), but on the other hand for a certain period of time, hosts connected to switch Fabric2 will lose connectivity.

well, depending on how critical the fabric is I would use the first or the second method.

Rgds

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