HP Surestore 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availabil - Page 79
Fabric Topology Limits, Fabric Elements, Heterogeneous fabric, Number of ISLs
View all HP Surestore 64 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 79 highlights
Planning Considerations for Fibre Channel Topologies Fabric elements cooperate to receive data from the N_Port of an attached device, route the data through the proper director or switch fabric ports (F_Ports), and deliver the data to the N_Port of a destination device. The data transmission path through the fabric is typically determined by the fabric elements and is transparent to the user. Subject to zoning restrictions, devices attached to any of the interconnected directors or switches can communicate with each other through the fabric. A multi-switch fabric is typically complex and provides the facilities to maintain routing to all device N_Ports attached to the fabric, handle flow control, and satisfy the requirements of the classes of Fibre Channel service that are supported. Fabric Topology Limits Operation of multiple directors or switches in a fabric topology is subject to the following topology limits. Consider the impact of these limits when planning the fabric. ■ Fabric Elements - Each fabric element is defined by a unique domain identification (domain ID) that ranges between 1 and 31. A domain ID of 0 is invalid. Therefore, the theoretical limit of interconnected directors or switches supported in a single fabric is 31. For additional information, refer to "Large Fabric Design Implications" on page 107. For the latest supported topology limits, refer to http://h18000.www1.hp.com/products/storageworks/san/documentation.html or contact your local HP sales representative. ■ Heterogeneous fabric - Vendor interoperability in the fabric environment is supported; therefore, fabric elements can include directors, edge switches, and open-fabric compliant products supplied by original equipment manufacturers (OEMs). To determine if interoperability is supported for a product, or if communication restrictions apply, refer to the supporting publications for the product or contact your HP representative. ■ Number of ISLs - The Director 2/64 supports 32 ISLs and the Director 2/140 supports 70 ISLs. Edge Switches 2/16, 2/24, and 2/32 support all ports. For redundancy, at least two ISLs should connect any pair of director-class fabric elements. For information, contact your local HP sales representative or refer to the following website: http://h18000.www1.hp.com/products/storageworks/san/documentation.html. SAN High Availability Planning Guide 79