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Steve0_2012
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May 28th, 2014 03:00
Symmetrix WWNN
Hello
Can someone please explain the WWNN and WWPN details for VMAX Engines based on my quesiton below.
Does each director have a unique WWNN or is the same WWNN used for all directors in the cluster. Is it just the WWPN which is unique.
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Posted May 28th, 2014 03:00
Hi Steve,
Each port of director has a WWPN.
Actually for zoning we are using the WWPN.
Each WWPN is unique.
Berst Regards
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Posted May 28th, 2014 04:00
The reason because, when a director is configure as FA you can use both the ports for storage - server connection. whereas the remote director (RA) supports only one port usage for replication, the other port will left as free or probably you can switch between them when a port has problem.
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Posted May 28th, 2014 04:00
Sean is 100% Correct (as usual
). I tend to use command :symcfg -sid xxx list -dir all -v . The significant feature about that command that it will list also RF alongside with FA. For RFs, It is a bit tricky as the WWN Node name mentioned in the command output is actually the WWPN to be used in your zones so be aware of this.
Director Identification: RF-5F
Director Type : RDF-R1
Director Status : OnlineDirector Symbolic Number : 05F
Director Numeric Number : 85
Director Slot Number : 5
Negotiated Speed (Gb/Second) : 2
Director Port Speed (Gb/Second) : 8
RDF HW Compression Supported : NoWWN Node Name : 5000097408146150
Remote Symmetrix ID : xxxxxxxHope that helps
Mohammed Salem
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Posted May 28th, 2014 04:00
Each ports get its wwpn derived from the wwnn.
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Posted May 28th, 2014 05:00
Well, For SRDF. Port 0 is used, port 1 is condemned (will never be used)
Hope that helps
Mohammed Salem
seancummins
2 Intern
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226 Posts
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Posted May 28th, 2014 03:00
Steve,
For a particular array, the WWNN is the same for all ports, and the WWPN is unique for each port.
You can validate this by looking at the 'WWN Node Name' and 'WWN Port Name' values for each port in the output of 'symcfg list -fa all -v'.
For example:
$ symcfg -sid 1276 list -fa all -v |grep "Node Name" |sort -u |wc -l
1
$ symcfg -sid 1276 list -fa all -v |grep "Port Name" |sort -u |wc -l
72
Thanks,
- Sean