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
81SAN High Availability Planning Guide
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 109. 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 2/12, 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 web site:
http://h18000.www1.hp.com/products/storageworks/san/documentation.html
.
■ Hop count — The Fibre Channel theoretical limit of ISL connections
traversed (hop count) in a single path through the fabric is seven. The
maximum hop count supported by a fabric is based on current design rules.
For information, refer to
http://h18000.www1.hp.com/products/storageworks/san/documentation.html
or contact your local HP sales representative.