HP 1606 Brocade Fabric OS Administrator's Guide v6.3.0 (53-1001336-01, July 20 - Page 264
Zoning overview
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11 Zoning overview • QoS zones Assign high or low priority to designated traffic flows. QoS zones are normal zones with additional QoS attributes specified by adding a QOS prefix to the zone name. See "QoS: SID/DID traffic prioritization" on page 416 for more information. • Traffic Isolation zones (TI zones) Isolate inter-switch traffic to a specific, dedicated path through the fabric. See "Traffic Isolation Routing" on page 394 for more information. Zoning overview NOTE The information in this chapter applies to Brocade Native mode only. For information about zoning in InteropMode 2 or 3, see Chapter 14, "Interoperability for Merged SANs". Zoning enables you to partition your storage area network (SAN) into logical groups of devices that can access each other. A device can communicate only with other devices connected to the fabric within its specified zone. For example, you can partition your SAN into two zones, winzone and unixzone, so that your Windows servers and storage do not interact with your UNIX servers and storage. When zoning is enabled, devices that are not included in a zone configuration are inaccessible to other devices in the fabric. Zones can be configured dynamically. They can vary in size, depending on the number of fabric-connected devices, and devices can belong to more than one zone. Because zone members can access only other members of the same zone, a device not included in a zone is not available to members of that zone. When using a mixed fabric-that is, a fabric containing two or more switches running different release levels of fabric operating systems-you should use the switch with the highest Fabric OS level to perform zoning tasks. You can use zones to logically consolidate equipment for efficiency or to facilitate time-sensitive functions; for example, use zoning to create a temporary zone to back up nonmember devices. Any zone object connected to the fabric can be included in one or more zones. Zone objects can communicate only with objects within the same zone. For example, consider Figure 26 on page 223, which shows configured zones, Red, Green, and Blue. • Server 1 can communicate only with the Loop 1 devices. • Server 2 can communicate only with the RAID and Blue zone devices. • Server 3 can communicate with the RAID device and the Loop1 device. • The Loop 2 JBODs are not assigned to a zone; no other zoned fabric device can access them. 222 Fabric OS Administrator's Guide 53-1001336-01
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