Seagate SCSI Interface Product Manual page 109

SCSI Interface Product Manual, Rev. J
[2] The Association field specifies the entity with which the Identifier field is associated, as described in Table
60.
Table 60: Association
Value Description
0h The Identifier field is associated with the addressed physical or logical device.
1h The identifier field is associated with the port that received the request.
2h-Fh Reserved.
[3] The Identifier Type field specifies the format and assignment authority for the identifier, as described in
Table 61.
Table 61: Identifier Type
Value Description
0h No assignment authority was used and consequently there is no guarantee that the identifier is
globally unique (i.e., the identifier is vendor specific).
1h The first 8 bytes of the identifier field are a Vendor ID (see T10/1236-D, annex C). The organi-
zation associated with the Vendor ID is responsible for ensuring that the remainder of the iden-
tifier field is unique. One recommended method of constructing the remainder of the identifier
field is to concatenate the product identification field from the standard Inquiry data field and
the product serial number field from the unit serial number page.
2h The identifier field contains a Canonical form IEEE Extended Unique Identifier, 64-bit (EUI-64).
In this case, the identifier length field shall be set to 8. Note that the IEEE guidelines for EUI-64
specify a method for unambiguously encapsulating an IEEE 48-bit identifier within an EUI-64.
3h The identifier field contains an FC-PH Name_Identifier. Any FC-PH identifier may be used,
including one of the four based on a Canonical form IEEE company_id.identifier field
4h-Fh Reserved.
[4] The Identifier Length field specifies the length in bytes of the Identifier. If the Allocation Length field of the
command descriptor block is too small to transfer all of the identifier, the Identifier length shall not be
adjusted to reflect the truncation.
[5] The Identifier field contains the identifier as described by the Identifier Type, Code Set, and Identifier
Length fields.
The example described in this paragraph and shown in Table 62 is not a normative part of this standard.
This example of a complete device identification VPD page assumes that the product is a direct-access
device with a T10 Vendor ID of "XYZ_Corp," a product identification of "Super Turbo Disk," and a product
serial number of "2034589345." Furthermore, it is assumed that the manufacturer has been assigned a
24-bit IEEE company_id of 01ABCDh by the IEEE Registration Authority Committee and that the manu-
facturer has assigned a 24-bit extension_identifier of 234567h to this logical unit. The combined 48-bit
identifier is reported in the 64-bit format as defined by the IEEE 64-bit Global Identifier (EUI-64) standard.
The data returned in the device identification VPD page for this logical unit is shown in Table 62.
95