NPIV

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. ^ "What is N_Port ID Virtualization (NPIV)?".

Sources

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.