NPIV is an extension to a standard already defined in the fibre channel protocols that allows one to get past single...
initiator/single target design limitations. In order for you to take advantage of this, both the HBA (in the host and the storage array) and the switch must support NPIV to generate and publish (allow) an additional world wide port name (WWPN) in a virtual fashion. There is an inevitable collision of ideals going on here, in that virtual server environments want to use virtual storage environments. With the HBA, the switch and the storage array having the ability to create the "virtual" fabric, it will allow for single use connections, similar to VPNs or VLANs or other technologies that want a "dedicated" and secure path from the virtual server to the virtual LUN, with LUN masking and communications intact from point-to-point. This allows for traffic segregation and addresses a host of other potential storage area network issues.
Dig Deeper on Disaster recovery, failover and high availability for virtual servers
Related Q&A from James E. Geis
It's possible to virtualize streaming video, but deployment depends on network, storage I/O, and bandwidth requirements of the virtual host, says an ... Continue Reading
Data deduplication options for virtualized servers might impact performance by creating data bottlenecks, according to an expert. Continue Reading
In a physical-to-virtual migration, getting a handle on your server and storage requirements as well as disaster recovery needs can significantly ... Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.