Convert from EMC naa. in VMware VSphere to Device ID

This is a short how-to on converting the VMware VSphere device wwn (naa. number) to an EMC 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

If it is only few devices you want to work with, you can just copy and paste the naa number from Vsphere Client, where the number (naa) is a bit longer, as it contains additional information. e.g. 

vml.02000800006000097000019570421253303030424253594d4d4554

Convert from naa. to Dev id:

Take the last 8 digits of the naa number

e.g. 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 first "30" is discarded, so we'll take only 30 33 44 35

The Dev ID equivalence for the resultant pair of numbers is as follows:
30 = 0
31 = 1
32 = 2
33 = 3
34 = 4
35 = 5
36 = 6
37 = 7
38 = 8
39 = 9
40 = **** DOES NOT EXIST ****
41 = A
42 = B
43 = C
44 = D
45 = E
46 = F
…. Follows in that order
Just write that out and you’ll obtain the dev id.

So in the example, 30334435 becomes
30 = 0
33 = 3
44 = D
35 = 5
thus the EMC device ID for 30334435 is 03D5

VSphere LUN naa identifier decoded and explained

In VMware VSphere, the identifier comes in the form of naa.aaaaaaaabbbbbbbbbbbbccccdddddddd

I’ve been able to find this information from multiple sources, so I think it is very accurate. Your comments are welcome if it doesn't match your case.

The breakdown is as follows:

• aaaaaaaa is an 8 digit vendor identifier, and I’ve listed the vendors we use below, as well as others I’ve been able to find online:

o    60060480 <— EMC

o    60060e80 <— HDS

o    60a98000 <— NetApp

o    60060160 <— DGC (Clariion)

o    6090a038 <— EQL

I found that in certain cases, you can also do a lookup of the vendor. To do that drop the leading ‘6’ and then take digits 2 to 8 and enter them into an OUI lookup tool http://www.wireshark.org/tools/oui-lookup.html . e.g. entering 0060480 to an OUI lookup confirms the vendor is EMC.

• bbbbbbbbbbbb is a 12 digit serial # of the device providing the storage.  This may differ from device to device, but matches up perfectly to the id’s of our EMC storage.
• cccc is a 4 digit code for model (at least for EMC). Please double check with your storage system.

-               on VMAX it’s ‘5330’ on all luns

-               on DMX-3 it’s also ‘5330’

-               on DMX-3000 it’s ‘4E45′

• dddddddd is an 8 digit LUN identifier.  This differs based on the device on how the device ID is actually represented. I will explain how to decode this number for EMC in a future post.