Default SCSI ID and Loop ID (AL_PA) Assignments for Drives
Based on its physical position in the frame of a tape library, each tape drive is assigned a default SCSI ID (from 0-12) or a default Loop ID (Arbitrated Loop Physical Address, commonly abbreviated as AL_PA). Table 1 lists the default SCSI IDs.
| Device Position | SCSI ID |
|---|---|
| Drive 1 | 0 |
| Drive 2 | 1 |
| Drive 3 | 2 |
| Drive 4 | 3 |
| Drive 5 | 4 |
| Drive 6 | 5 |
| Drive 7 | 6 |
| Drive 8 | 8 |
| Drive 9 | 9 |
| Drive 10 | 10 |
| Drive 11 | 11 |
| Drive 12 | 12 |
Note: You can change the SCSI IDs or Loop IDs for the drives by using the
SETTINGS menu option on the operator panel, or by using the IBM® Tape
Library Specialist web interface. To change the IDs, refer to the
appropriate procedure in the IBM TS3500
Operator Guide.
Table 2 lists the default Loop IDs (AL_PAs).
| Drive | Frames 1, 7, 13 | Frames 2, 8, 14 | Frames 3, 9, 15 | Frames 4, 10, 16 | Frames 5, 11 | Frames 6, 12 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Loop ID | AL_PA | Loop ID | AL_PA | Loop ID | AL_PA | Loop ID | AL_PA | Loop ID | AL_PA | Loop ID | AL_PA | |
| Row 1 | ||||||||||||
| Port 1 | 17 | X'CC' | 33 | X'B1' | 49 | X'97' | 65 | X'71' | 81 | X'54' | 97 | X'39' |
| Port 2 | 81 | X'54' | 97 | X'39' | 18 | X'CB' | 34 | X'AE' | 17 | X'CC' | 33 | X'B1' |
| Row 2 | ||||||||||||
| Port 1 | 18 | X'CB' | 34 | X'AE' | 50 | X'90' | 66 | X'6E' | 82 | X'53' | 98 | X'36' |
| Port 2 | 82 | X'53' | 98 | X'36' | 19 | X'CA' | 35 | X'AD' | 18 | X'CB' | 34 | X'AE' |
| Row 3 | ||||||||||||
| Port 1 | 19 | X'CA' | 35 | X'AD' | 51 | X'8F' | 67 | X'6D' | 83 | X'52' | 99 | X'35' |
| Port 2 | 83 | X'52' | 99 | X'35' | 20 | X'C9' | 36 | X'AC' | 19 | X'CA' | 35 | X'AD' |
| Row 4 | ||||||||||||
| Port 1 | 20 | X'C9' | 36 | X'AC' | 52 | X'88' | 68 | X'6C' | 84 | X'51' | 100 | X'34' |
| Port 2 | 84 | X'51' | 100 | X'34' | 21 | X'C7' | 37 | X'AB' | 20 | X'C9' | 36 | X'AC' |
| Row 5 | ||||||||||||
| Port 1 | 21 | X'C7' | 37 | X'AB' | 53 | X'84' | 69 | X'6B' | 85 | X'4E' | 101 | X'33' |
| Port 2 | 85 | X'4E' | 101 | X'33' | 22 | X'C6' | 38 | X'AA' | 21 | X'C7' | 37 | X'AB' |
| Row 6 | ||||||||||||
| Port 1 | 22 | X'C6' | 38 | X'AA' | 54 | X'82' | 70 | X'6A' | 86 | X'4D' | 102 | X'32' |
| Port 2 | 86 | X'4D' | 102 | X'32' | 23 | X'C5' | 39 | X'A9' | 22 | X'C6' | 38 | X'AA' |
| Row 7 | ||||||||||||
| Port 1 | 23 | X'C5' | 39 | X'A9' | 55 | X'81' | 71 | X'69' | 87 | X'4C' | 103 | X'31' |
| Port 2 | 87 | X'4C' | 103 | X'31' | 24 | X'C3' | 40 | X'A7' | 23 | X'C5' | 39 | X'A9' |
| Row 8 | ||||||||||||
| Port 1 | 24 | X'C3' | 40 | X'A7' | 56 | X'80' | 72 | X'67' | 88 | X'4B' | 104 | X'2E' |
| Port 2 | 88 | X'4B' | 104 | X'2E' | 25 | X'BC' | 41 | X'A6' | 24 | X'C3' | 40 | X'A7' |
| Row 9 | ||||||||||||
| Port 1 | 25 | X'BC' | 41 | X'A6' | 57 | X'7C' | 73 | X'66' | 89 | X'4A' | 105 | X'2D' |
| Port 2 | 89 | X'4A' | 105 | X'2D' | 26 | X'BA' | 42 | X'A5' | 25 | X'BC' | 41 | X'A6' |
| Row 10 | ||||||||||||
| Port 1 | 26 | X'BA' | 42 | X'A5' | 58 | X'7A' | 74 | X'65' | 90 | X'49' | 106 | X'2C' |
| Port 2 | 90 | X'49' | 106 | X'2C' | 27 | X'B9' | 43 | X'A3' | 26 | X'BA' | 42 | X'A5' |
| Row 11 | ||||||||||||
| Port 1 | 27 | X'B9' | 43 | X'A3' | 59 | X'79' | 75 | X'63' | 91 | X'47' | 107 | X'2B' |
| Port 2 | 91 | X'47' | 107 | X'2B' | 28 | X'B6' | 44 | X'9F' | 27 | X'B9' | 43 | X'A3' |
| Row 12 | ||||||||||||
| Port 1 | 28 | X'B6' | 44 | X'9F' | 60 | X'76' | 76 | X'5C' | 92 | X'46' | 108 | X'2A' |
| Port 2 | 92 | X'46' | 108 | X'2A' | 29 | X'B5' | 45 | X'9E' | 28 | X'B6' | 44 | X'9F' |
| Note: Loop IDs are given in
decimal format and AL_PA values are given in hexadecimal format.
|
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