How to decode a USP-V WWN

Let assume you have multiple arrays hooked up in you datacentre but are not really sure what is connected to were.

So you log into a switch, type some brocade/cisco/qlogic/other command to get an overview of connected devices and you have no idea which array-port is located on which switch port. One thing you can see is the WWN.

All vendors (that I know of) use some form of coding mechanism to include array information in their WWNs do if you know what to look for you can check which array and which port is connected to that particular switch port.

Hitachi uses the following:

Lets say you see an array port logged in with WWN 50:06:0e:80:05:27:72:10. You first have to dissect the WWN into chunks. The first 4 digits are IEEE registered.

5006 0e80 is IEEE registered to Hitachi and raid systems division
05 is the model number code for USP-V / USP-VM (USP-V in this case)
2772 is hex encoded for the serial number. in this case 10098
10 is the port number on the array.

The last one is a bit tricky since now you need a mapping table to convert this to a portlabel that shows up in storage navigator. In this example it's CL2-A.

One other example:
50:06:0e:80:05:61:c0:10

5005 0e80 = fixed
05 = USP-V or USP-VM (in this case its a USP-VM)
61C0 = serial 25024
10 = port id also CL2-A