Compaq HSZ80 manual 38Creating Storagesets, Device port numbers Target Numbers

3–38Creating Storagesets

Device port numbers

1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Target numbers

3

2

1

0

10300	20300
10200	20200
10100	20100
10000	20000

30000 30100 30200 30300

40000 40100 40200 40300

50000 50100 50200 50300

60000 60100 60200 60300

EMU PVA 0

Controller A

Controller B

Cache A Cache B

11

10

9

8

10800 10900 11000 11100

20800 20900 21000 21100

30800 30900 31000 31100

40800 40900 41000 41100

50800 50900 51000 51100

60800 60900 61000 61100

EMU PVA 2

15

14

13

12

11500	21500
11400	21400
11300	21300
11200	21200

31200 31300 31400 31500

41200 41300 41400 41500

51200 51300 51400 51500

61200 61300 61400 61500

EMU PVA 3

PTL location = Device port number = 3

Target number = 08

LUN = 00

CXO5851B

Figure 3–12. PTL Addressing in an Extended Configuration

In Figure 3–12,the controller addresses DISK30800 through device port 3, target 08, LUN 00. This PTL location indicates the pathway the controller uses to address a disk drive (device) in the subsystem. It also indicates the device name.

The controller uses the PTL location to name each device that you add to your subsystem with StorageWorks Command Console or the CONFIG utility. (Factory- installed devices are added with the CONFIG utility. Thus, their names derive from their PTL locations.) For example, if the controller finds a disk in PTL 10200, it names it DISK10200.