Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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In addition, the Drive implements FC-FLA as a super-set of the FC-PLDA. Thus, the Drive conforms to FC-PLDA except for
those behaviors explicitly defined by the FC-FLA profile. The PLDA makes the following additional requirements.
1. The FC-4 is SCSI-FCP.
2. The Drive provides a Class 3 Fibre Channel service.
- NO indication of (un)successful class 3 frame delivery is transmitted.
- Frame flow control is buffer-to-buffer only.
- Class 1 and 2 frames are ignored.
3. Direct point-to-point attachment with an N_Port is not supported.
17.1.1 Node and Port names
Every Fibre Channel Node and Port in the world must have a unique name. The Drive is a node with two L_Ports and therefore
has a Node_Name and two Port_Names.
Both the Node_Name and Port_Name are in 64-bit IEEE Registered Name format, as illustrated in Table24.
Table 24:IEEE Registered Name format
The Name Address Authority field (0101b) specifies the format used for the rest of the name as follows:
•OUI Organizationally Unique Identifier (24 bits). Canonical form means that each byte is stored in
“bit reversed” order.
• Block Assignment Block assignment within Hitachi Global Storage Technologies
•Object Node/Port Identifier
00b Node
01b Port 1
10b Port 2
11b Not assigned
•S/N Sequentially increasing drive serial number assigned at manufacturing.
17.1.2 NL_Port address
An NL_Port address, as illustrated in Table25, is a 3 byte value that uniquely identifies an NL_Port on a Fibre Channel net-
work. The Domain and Area bytes are assigned to a NL_Port by its local FL_Port. The least significant byte in the NL_Port
address is the Arbitrated Loop Physical Address (AL_PA), and uniquely identifies a NL_Port on its local loop.
A Hard AL_PA is one which is supplied, via the Drive connector, from external switches or jumpers. A Soft AL_PA is one
which is assigned during Loop Initialization
Table 25:NL_Port address
Bit
63-60 59-36 35-24 23-2 1-0
0101 OUI in Canonical Form Block Assignment S/N Object
Bits 23-16 Bits 15-8 Bits 7-0
Domain Area AL_PA