“NPIV”的意思、由来-开放百科全书

词条

NPIV

释义

N_Port initialization with and without NPIV
Notes
Sources

NPIV or N_Port ID Virtualization is a Fibre Channel feature whereby multiple Fibre Channel node port (N_Port) IDs can share a single physical N_Port. This allows multiple Fibre Channel initiators to occupy a single physical port, easing hardware requirements in Storage Area Network (SAN) design, especially where virtual SANs are called for. This allows each virtual server to see its own storage and no other virtual server's storage.^[1] NPIV is defined by the Technical Committee T11 in the Fibre Channel - Link Services (FC-LS) specification.

N_Port initialization with and without NPIV

Normally N_Port initialization proceeds like this:

N_Port sends FLOGI to address 0xFFFFFE to obtain a valid address
N_Port sends PLOGI to address 0xFFFFFC to register this address with the name server
N_Port sends SCR to address 0xFFFFFD to register for state change notifications

However with NPIV it may continue like this:

N_Port sends FDISC to address 0xFFFFFE to obtain an additional address
N_Port sends PLOGI to address 0xFFFFFC to register this additional address with the name server
N_Port sends SCR to address 0xFFFFFD to register for state change notifications.
... (repeat FDISC/PLOGI/SCR for next address)

FDISC is an abbreviation for Fabric Discovery, or "Discover Fabric Service Parameters", which is a misleading name in this context. It works just like FLOGI.

N_Port is used to connect equipment ports to the fibre channel fabric (optical network) Source: https://www.hpe.com/h20195/v2/GetPDF.aspx/4AA4-4545ENW.pdf

Notes

1. ^http://searchvirtualstorage.techtarget.com/definition/N_Port-ID-virtualization-NPIV

Sources

Fibre Channel - Link Services
NPIV Functionality Protocol
T11 latest draft standards page

1 : Fibre Channel

随便看

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。