Chaparral FS2620R manual Loop ID to Alpa Mapping, Device

FS2620R Rack Model User’s Guide

3

2

1

ID	0
Initiator
	7

Tape 3	9
Tape 2	8
Tape 1	6
Robot	5
	7

Tape 7	9
	8
Tape 6	7
	6
Tape 5	5
	4
Tape 4	3
	15

Disk Disk Disk Disk Disk Disk Disk 1 2 3 4 5 6 7

sees(sd.conf, st.conf)

Device

Robot

Tape1

Tape2

Tape3

Tape4

Tape5

Tape6

Tape7

Disk1

Disk2

Disk3

Disk4

Disk5

Disk6

Disk7

FS2620

Bus:Target:LUN

0:0:0

0:1:0

0:2:0

0:3:0

1:5:0

1:6:0

1:8:0

1:9:0

2:3:0

2:4:0

2:5:0

2:6:0

2:7:0

2:8:0

2:9:0

soft

What the Host

maps to

FC LUN

0

1

2

3

4

5

6

7

8

9

10

11

12

13

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15

Loop ID

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1

(or FS2620 ID available 0xEF)

Channel 0	Channel 1	Channel 2	FS2620
		1
	Loop ID	Fibre Channel
		Host Computer

User configured	defaulted) @	Loop	0	1	2 . . .	125	soft	Take first (starting at
		AL PA	0xEF	0xE8	0xE4 . . .	0x01	?
		FC Address	0x0000EF	0x0000E8	0x0000E4 . . .	0x000001	?
Mapping depends on	Host HBA and driver
		Bus:Target ID	0:0	0:1	0:2	3:29	?

Figure A-1. FS2620R device address mapping

Loop ID to AL_PA Mapping

During the Fibre Channel Arbitrated Loop (FC-AL) initialization process, a unique Arbitrated Loop Physical Address (AL_PA) value is assigned to each port on the loop. Not all of the 256 hex values are allowed as AL_PA values per FC-AL, so Loop IDs are used to represent the 125 addresses that the router can use. You can assign a Loop ID to the router. See Configuring the FC Host Channels on page 3-12.

A-2