World Wide Name Zoning - Dell PowerVault MD3600f Hardware Installation And Troubleshooting Manual
Storage arrays with
microsoft windows server
failover clusters
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- Owner's manual (318 pages) ,
- Getting started (222 pages) ,
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World Wide Name Zoning
There are several different switch zoning techniques used across various
SANs. When configuring zoning with your storage array, use 64 bit World
Wide Name (WWN) port zoning to uniquely identify each component in
your Fibre Channel switch fabric. An advantage of using WWN port zoning
(also called soft zoning) is that it allows you to remove and/or replace cabling
to and from the fabric without reconfiguring the existing zone logic.
When implemented on the Fibre Channel switch, port WWN zoning causes
the host server to query the World Wide Identifier (WWID) name of all
attached physical disks and/or expansion enclosures each time it access the
switch fabric. By zoning specific ports on the host server, switch and storage
array together, the switch allows the host server to see only devices included in
that zone, decreasing the amount of time it would otherwise take for the host
server to query attached, but out-of-zone, devices.
Switch Zoning Requirements
The storage array imposes specific requirements that must be followed when
setting up Fibre Channel switch zoning:
•
If a Fibre Channel switch is used to connect your host server and storage
array, it must be zoned. Un-zoned or open switches cannot be used.
•
Always use WWN port zoning, not hard zoning that blocks or grants access
based on the device.
•
No more than one HBA may be connected to a single logical switch zone.
•
No more than four paths (port-to-port segments) can be established from
a single, physical host server to a single RAID controller.
•
A zone can contain multiple targets.
•
A zone can span multiple storage arrays.
•
If the Remote Replication premium feature is activated, a separate zone
for each replication port is required. Only data traffic related to Remote
Replication can move through that zone. For more details and
requirements regarding Remote Replication, see the Owner's Manual at
support.dell.com/manuals.
46
Preparing Your Systems for Clustering
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