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
Physical Planning Considerations
134 SAN High Availability Planning Guide
Consider the following when determining the number and type of each transceiver
to use:
■ Distance between a director or switch and the attached Fibre Channel device
or between fabric elements communicating through an ISL.
■ Cost effectiveness.
■ Device restrictions or requirements with respect to existing fiber-optic cable
(multimode or single-mode).
Data Transmission Distance
Data transmission distance is the primary factor governing the choice of
transceiver type and optical fiber. If the transmission distance is:
■ Less than 150 meters, multimode or single-mode optical fiber and any type of
optical transceiver can be used.
■ Between 150 and 300 meters, 50/125-micron multimode or single-mode
optical fiber and any type of transceiver can be used.
■ Over 300 meters, only single-mode optical fiber and a longwave laser
transceiver can be used. A 62.5 micron cable is only supported for the use of
existing cable plants. HP recommends the use of 50 micron cables for new
installations.
Variables such as the number of patch panel connections, link speed, grade of
fiber-optic cable, device restrictions, application restrictions, buffer-to-buffer
credit limits, and performance requirements can affect transmission distance.
Cost-Effectiveness
Cost is another factor governing the choice of transceiver type and optical fiber.
Shortwave laser transceivers and multimode cable offer a less expensive solution
if data transmission distance is not critical.
Device or Cable Restrictions
The choice of transceiver and cable type may be restricted or dictated by:
■ Device restrictions — Some devices may be restricted to use of only one
type of transceiver (shortwave or longwave). Refer to the supporting
documentation delivered with the product for information.
■ Existing cable restrictions — The enterprise may contain only one type of
fiber-optic cable (multimode or single-mode) and the customer may be
required to use the existing cables.