What is WWN zoning?
WWN zoning (also called name zoning) restricts access by a device’s WWN. As the WWN is on the host, the port the host is connected to can be moved and access is still preserved. Connecting a new device into a port previously used by a WWN zone device will not convey any access to the previous device’s resources.
What is zoning in storage area network?
Zoning is a fabric-based service in a storage area network (SAN) that groups together hosts and storage nodes that require communication. The essential requirement for performing zoning is that the nodes can communicate only if they are members of the same zone.
What is mean by port zoning and WWN zoning?
WWN zoning groups a number of WWNs in a storage-area network zone and allows them to communicate with each other. Port zoning groups particular switch ports together to allow any device connected to those ports to communicate with each other.
What are the 2 major types of zoning in SAN?
There are two distinct methods of zoning that can be applied to a SAN: World Wide Name zoning and port zoning. WWN zoning groups a number of WWNs in a zone and allows them to communicate with each other.
What is WWN storage?
From Wikipedia, the free encyclopedia. A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier used in storage technologies including Fibre Channel, Parallel ATA, Serial ATA, NVM Express, SCSI and Serial Attached SCSI (SAS).
What is WWN in SAN storage?
A World Wide Name (WWN) is a unique identifier that is assigned to a manufacturer by the Institute of Electrical and Electronic Engineers (IEEE) and hard-coded into a Fibre Channel (FC) device. WWNs are important when setting up a storage area network (SAN).
What is the benefit of WWN zoning over port zoning?
What is a benefit of WWN zoning over port zoning? A server, after being moved to another switch port in the fabric, maintains connectivity to its zone partners without the need to modify the zoning configuration.
Where WWN zoning is preferred over port zoning?
i)Soft zoning is also WWN zoning & preferred when users need flexibility to physically more attached nodes between switch port cable the SAN , that may take place during switch maintenance and repair without reconfiguring the zone information. This is possible because the WWN is static to the node port.
What is zoning and masking in storage?
LUN masking takes place at either the host bus adapter (HBA) or storage controller, and restricts the hosts’ ability to access specific LUNs. LUN zoning generally takes place on storage-area network (SAN) switches and compartmentalises the SAN fabric, grouping hosts and storage arrays into zones.
Is the Switch port irrelevant in WWN zoning?
The switch port that each device is connected to is irrelevant when WWN zoning is configured. An advantage to this type of zoning is that if a port is suspected of being faulty, another port can be used without the need for fabric reconfiguration.
What are the advantages and disadvantages of WWN zoning?
An advantage to this type of zoning is that if a port is suspected of being faulty, another port can be used without the need for fabric reconfiguration. A disadvantage with WWN zoning is that if there’s a host bus adapter (HBA) failure, the fabric will need to be reconfigured for the host to reconnect to its storage.
What’s the difference between soft zoning and WWN zoning?
WWN zoning is sometimes referred to as soft zoning. Port zoning groups particular switch ports together to allow any device connected to those ports to communicate with each other. The advantages and disadvantages of port zoning are the opposite of those for WWN zoning.
What does it mean to zone a Fibre Channel?
Fibre Channel SANs can be zoned according to the World Wide Name (WWN) of each device, or according to switch ports. WWN zoning groups a number of WWNs in a storage-area network zone and allows them to communicate with each other.