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Fibre Channel (SAN)

Posts: 0

Zoning Best Practice?

Just wondering how other folks are doing their zoning.

Is it better to use a single initiator/single target or single initiator/multiple target when creating a zone?


ESXi host has HBA1 and HBA2
Two Brocade 6520 FC switches (two fabrics): SW1 and SW2
EMC VMAX with eight FC ports (1-4 on SW1 and 5-8 on SW2)


Create four zones on SW1: one for each initiator/target pair
Create four zones on SW2: one for each initiator/target pair.
Total of eight zones.


Create one zone on SW1: one initiator and four targets (1-4)
Create one zone on SW2: one initiator and four targets (5-8)
Total of two zones


For 30 hosts, that is 240 zones versus 60 zones.


Thanks in advance for any feedback.

External Moderator
Posts: 5,680
Registered: ‎02-23-2004

Re: Zoning Best Practice?

Single Target/Initiator is the best practice.


--->>>one initiator and four targets

is absolutely no-go

Valued Contributor
Posts: 559
Registered: ‎03-20-2011

Re: Zoning Best Practice?

Right, "one initiator + one target" is a best practice.


But I'd say that "one initiator + a number of ports from the same target device" is also accepted.


With FOS 7.4 and peer zoning all these best practices will become legacy... 

Occasional Contributor
Posts: 6
Registered: ‎12-10-2015

Re: Zoning Best Practice?

Normally the SAN vendor will specify this, for example 3par is single initiator + 1 target port. 

Posts: 36
Registered: ‎07-19-2007

Re: Zoning Best Practice?

Unless you would have tens of thousands of zones with single target/single initiator I would suggest going that way.


I would explain it this way:


For many devices you would have absolutely no issues with putting multiple targets from a single unit in with an initiator (as described by one responder here).


But if you were ever troubleshooting any condition whatsoever on your SAN, you would be likely to run into someone like Antonio.  And at that point your whole troubleshooting and diagnosis of your real issue will get subordinated to the single target/single initiator discussion.  And you will waste all kinds of time and resources demonstrating that your problem is not related to the way your zones are set up...





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