FW V06.XX/HAFM SW V08.02.00 HP StorageWorks SAN High Availability Planning Guide (AA-RS2DD-TE, July 2004)
Table Of Contents
- SAN HA Planning Guide
- Contents
- About this Guide
- Introduction to HP Fibre Channel Products
- Product Management
- Planning Considerations for Fibre Channel Topologies
- Fibre Channel Topologies
- Planning for Point-to-Point Connectivity
- Characteristics of Arbitrated Loop Operation
- Planning for Private Arbitrated Loop Connectivity
- Planning for Fabric-Attached Loop Connectivity
- Planning for Multi-Switch Fabric Support
- Fabric Topologies
- Planning a Fibre Channel Fabric Topology
- Fabric Topology Design Considerations
- FICON Cascading
- Physical Planning Considerations
- Port Connectivity and Fiber-Optic Cabling
- HAFM Appliance, LAN, and Remote Access Support
- Inband Management Access (Optional)
- Security Provisions
- Optional Features
- Configuration Planning Tasks
- Task 1: Prepare a Site Plan
- Task 2: Plan Fibre Channel Cable Routing
- Task 3: Consider Interoperability with Fabric Elements and End Devices
- Task 4: Plan Console Management Support
- Task 5: Plan Ethernet Access
- Task 6: Plan Network Addresses
- Task 7: Plan SNMP Support (Optional)
- Task 8: Plan E-Mail Notification (Optional)
- Task 9: Establish Product and HAFM Appliance Security Measures
- Task 10: Plan Phone Connections
- Task 11: Diagram the Planned Configuration
- Task 12: Assign Port Names and Nicknames
- Task 13: Complete the Planning Worksheet
- Task 14: Plan AC Power
- Task 15: Plan a Multi-Switch Fabric (Optional)
- Task 16: Plan Zone Sets for Multiple Products (Optional)
- Index
Planning Considerations for Fibre Channel Topologies
107SAN High Availability Planning Guide
Figure 45: Redundant fabrics
Some dual-attached devices support active-active paths, while others support only
active-passive paths. Active-active devices use either output path equally, and
thus use both fabrics and double the device bandwidth. Active-passive devices use
the passive path only when the active path fails.
When deploying redundant fabrics, it is not required that the fabrics be
symmetrical. As an example, single-attached devices, such as tape drives and
noncritical servers and storage, can be logically grouped and attached to one of
the fabrics.
Fabric Scalability
A scalable fabric allows for nondisruptive addition of fabric elements (directors
and switches) or ISLs to increase the size or performance of the fabric. Scalability
also relates to investment protection. If a core edge switch is replaced with a
newer or higher port count switch, it is often valuable to use the existing switch
elsewhere in the fabric (at the edge).
Interswitch Link
Fabric Connection
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