This is a short how-to on converting the device wwn (naa. number) to a device ID.
Of course in real life one can always get this by using the symmetrix command line
symdev -sid 1234 list -all -wwn | grep wwn
Convert from naa. to Dev id: Take the numbers after 53 (53 comes after the ID of the Array) eg for naa.60000970000292601174533030334435, numbers after 53 are 3030334435.
This will usually start with a 30. Break it apart in pairs of two. So 3030334435 becomes 30 30 33 44 35.
The Dev ID is as follows:
30 = 0
31 = 1
32 = 2
33 = 3
…
41 = A
42 = B
43 = C
…. Follows in that order Just write that out; you have the dev id now.
So in the example, 3030334435 becomes
30 = 0
30 = 0
33 = 0
44 = D
35 = 5
thus the EMC device ID for 3030334435 is 03D5