Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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Table 51:ADISC ACC payload
Hard Address: This 3 byte identifier consists of:
• The MSB is an 8-bit domain address. If the drive is acting as a Public Loop Device, it returns the domain address
given to it by the Fabric port during login. Otherwise the drive returns 0s in this field.
• The middle byte is an 8-bit area address. If the drive is acting as a Public Loop Device, it returns the area address
given to it by the Fabric port during login. Otherwise the drive returns 0s in this field.
• The LSB is the 8-bit AL_PA that the port attempts to acquire during the LIHA sequence of LIP. For the drive, this
number is calculated from the SEL-ID pins on the SCA-2 backplane connector.
When the Hard Address field is equal to the N_Port ID field, the port was able to obtain its hard address during LIP. The drive
does not check the value sent from the originator.
Port Name: IEEE unique address assigned during the manufacturing process.
Node Name: IEEE unique address assigned during the manufacturing process.
N_Port ID: This is the 24-bit NL_Port Identifier used in the S_ID of the ADISC Accept header. The lower 8 bits are the
AL_PA the drive acquired during loop initialization, and the upper 16 bits are the domain and area addresses the drive obtained
from the Fabric port. For private devices the upper two bytes should be all 0s. When this field matches the Hard Address field,
the drive was able to acquire its hard AL_PA during LIP.
17.3.9 Process Login (PRLI)
The PRLI request informs the recipient of the capabilities and requirements of the originator. The recipient responds with an
ACC to indicate agreement or LS_RJT otherwise.
Table 52:PRLI payload
Byte Item Size (Bytes)
0-3 ACC Code = 02000000h 4
4 Reserved 1
5-7 Hard Address of Responder 3
8
-15
Port Name of Responder 8
16
-23
Node Name of Responder 8
24 Reserved 1
25-27 N_Port ID of Responder 3
Byte Item Size (Bytes)
0 20h 1
1 Page Length = 10h 1
2-3 Payload Length 2
4-max Login service parameter pages n*16