Addressing methods and table structures, Table 18: addressing sequence, Table 19: address method definitions – HP Network Storage Router m2402 User Manual
Page 213: C addressing methods and table structures, Mapping modes, see, Appendix c, S, see
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Network Storage Router M2402 User Guide
C
Addressing Methods and
Table Structures
Fibre Channel (FC) and SCSI systems use different methods of addressing
devices. The router has a method of translating device IDs so each SCSI device is
mapped to the appropriate Fibre Channel LUN. The SCSI buses establish the bus
connections between devices. Targets on a SCSI bus may internally address
LUNs. The addressing of a specific SCSI device is represented by the
BUS:TARGET:LUN triplet.
When a FC Initiator initializes on a loop, the host must first determine what
devices exist on the loop. Device discovery is performed and an FCP target device
list is built. Each device is queried for FCP LUNs (the LUNs are the actual
devices that the operating system will address.) The addressing used is the SCC
Logical Unit Addressing and Peripheral Device Addressing method, shown in
through
. First level addressing is supported, so only the first
two bits of the 8 bit FCP LUN are used.
Table 18: Addressing Sequence
Bit/Byte
7
6
5
4
3
2
1
0
N
Address Method
Address Method Specific
N+1
Address Method Specific
Table 19: Address Method Definitions
Code
Description
00
Peripheral Device Addressing Method
01
Volume Set Addressing Method
10
Logical Unit Addressing Method
11
Reserved