Reference Guide

PowerVault ML6000 SCSI Reference Guide 21
Association – This field returns the following values:
• 0h – the Identifier field is associated with the address physical or logical device
• 1h – the Identifier field is associated with the port that received the request
Identifier Type – This field returns the following values:
• 1h – The identifier is a concatenation of the Vendor Identification field from the Standard Inquiry
response and the Serial Number field (without the Vendor Identification prefix) from the Unit Serial
Number page.
• 3h – The identifier is an IEEE Registered format Name_Identifier (Worldwide Name).
• 4h – The identifier is a port number. In this case, the Code Set and Association fields will both be
set to 1.
Identifier Length – This is the length of the Identifier field, and will vary by identifier type.
Identifier – This is the identifier as described by the Code Set, Association, and Identifier Type fields.
Media Changer Identification Descriptor
Media Changer logical units report only a single identifier. They will report the same identifier on either SCSI
or Fibre Channel.
Controller Identification Descriptors
On the SCSI interface the Controller logical unit will return the same identification descriptor as the Media
Changers, as shown in Table 15
.
On the Fibre Channel interface, the Controller logical unit will return three different identification descriptors
as shown in Table 16
, Table 17, and Table 19.
Table 15 Media Changer Identification Descriptor
Bit
Byte
76543210
0 Reserved Code Set = 2h
1 Reserved Association = 0h Identifier Type= 1h
2 Reserved
3 Identifier Length = 20h (32)
4
Vendor Identification
(as reported in the Standard Inquiry response)
11
12
Serial Number
(as reported in the Unit Serial Number page without Vendor Identification prefix)
35