Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
75
Since the drive only supports class 3 service, it only checks and responds to the class 3 Service Parameters.
Table 48:Class Service Parameters
The Service Options field contains the following flags:
• CV - Class Validity
When set to one, this flag indicates that the class of service is supported. The drive only supports class 3 thus this bit
is only set for the class 3 Service Parameters. If the FLOGI_ACC indicates that the fabric does not support class 3,
the drive will revert to PLDA behavior.
•IM - Intermix Mode
This flag only applies to class 1 service. It is reserved for classes 2 and 3. The drive sets this field to 0b.
• TM - Transparent Mode
This flag only applies to class 1 service. It is reserved for classes 2 and 3. The drive sets this field to 0b.
• LDM - Lock Down Mode
This flag only applies to class 1 service. It is reserved for classes 2 and 3. The drive sets this field to 0b.
Byte BIT Default
Request
Valu es
76543210
68 CV IM TM LDM SD DS Camp-On BufC1 80h
69 Priority Reserved 00h
Initiator Control Flags (Bytes 70-71)
70 Reserved 00h
71 Reserved 00h
Recipient Control Flags (Bytes 72-73)
72 Reserved 00h
73 Reserved 00h
74
75
(MSB) Receive Data-Field Size (Reserved) (LSB) 00h
00h
76
77
(MSB) Concurrent Sequences (Reserved) (LSB) 00h
00h
78
79
(MSB) End-to-End Credit (Reserved) (LSB) 00h
00h
80
81
(MSB) Open Sequences per Exchange (Reserved) (LSB) 00h
00h
82
83
(MSB) Class 6 Multi-cast RXID (Reserved) (LSB) 00h
00h