Unique numeric ID for SCSI-3 disks

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In SCSI-3 SPC, I was going through the section on "Device Identification VPD Page" (Section 7.6.3). I see the following:

If "Association" field in VPD83 page is set to 00b (i.e., The IDENTIFIER field is associated with the addressed logical unit), the above standard says:

At least one identification descriptor should have the IDENTIFIER TYPE field set to:
a) 2h (i.e., EUI-64-based);
b) 3h (i.e., NAA); or
c) 8h (i.e., SCSI name string).

Going through the details of (a) and (b), I notice that they are numeric.

However, (c) above is an ASCII string. But, even in this case, if the first 4 UTF-8 characters are parsed, the rest of it contains numeric value in ASCII.

For all SCSI disks that are SCSI-3 SPC compliant, for the above case, is it safe to say: each of them shall have an associated "numeric value" that is "unique" (assuming that the 4 UTF-8 characters for "SCSI name string" format are stored/available).

Thanks,
-Kishore
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