HP StorageWorks Fabric OS 5.0.
Legal and notice information © Copyright 2005 Hewlett-Packard Development Company, L.P. © Copyright 2005 Brocade Communications Systems, Incorporated. Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Contents About this guide . . . . . . . . . . .Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . Document conventions and symbols . . . . . . . . . . . . . . . . . . HP technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP Storage web site. . . . . . . . . . . . . . . . . . . . . . . . . . . HP-authorized reseller.
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figures 1 2 Zoning example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Distribution of traffic over an ISL Trunking group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Tables 1 2 3 4 5 6 4 Document conventions . . . . . . . . . . .
About this guide This guide provides information about: • Standard features that come with the Fabric Operating System (Fabric OS) • Optional features that require a license from HP Intended audience This guide is intended for system administrators and technicians who are experienced with the following: • HP StorageWorks Fibre Channel Storage Area Network (SAN) switches • Fabric OS 4.
Document conventions and symbols Table 1 lists the document conventions used in this manual. Table 1 Document conventions Convention Element Medium blue text: Figure 1 Cross-reference links and e-mail addresses Medium blue, underlined text (http://www.hp.
! IMPORTANT: Provides clarifying information or specific instructions. NOTE: TIP: Provides additional information. Provides helpful hints and shortcuts. HP technical support Telephone numbers for worldwide technical support are listed on the following HP web site: http://www.hp.com/support/. From this web site, select the country of origin. NOTE: For continuous quality improvement, calls may be recorded or monitored.
HP-authorized reseller For the name of your nearest HP-authorized reseller: • In the United States, call 1-800-345-1518. • Elsewhere, visit http://www.hp.com and click Contact HP to find locations and telephone numbers.
1 Standard features This chapter describes standard features that come with Fabric OS. These features include the following: • Changes to this guide for OS v5.0.
Table 2 Roles for admin and user Role Usage Maximum simultaneous login sessions per switch admin Administrative (such as installing a port upgrade license) 2 user Nonadministrative (such as monitoring the system) 4 High availability features The HP StorageWorks switch hardware and the Fabric OS firmware both support high availability (HA). The HA features include redundancy, hot-swapping, and nondisruptive operations. Table 3 summarizes the HA features available on various HP StorageWorks models.
Table 3 HP StorageWorks HA features (continued) Feature SAN Director 2/128 Core Switch 2/64 Background CP health monitor Yes Yes Nondisruptive firmware download Yes Nondisruptive code activation Yes SAN Switch 4/32 SAN Switch 2/32 SAN Switch 2/16V and 2/16N SAN Switch 2/8V Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Secure protocols Fabric OS supports the secure protocols listed in Table 4.
Table 4 Secure protocol support (continued) Protocol Description scp secure file copy—Provides support for secure configuration maintenance, such as configuration upload and download. NOTE: Firmware download does not use scp. Simple Network Management Protocol, version 3—Provides support for the Simple Network Management Protocol (SNMP), which allows you to monitor and manage network devices. (See ”SNMP security” on page 14 for more information.) SNMPv3 NOTE: SNMPv1 is also supported.
Security scenarios Security protocols are designed with the four main scenarios described in Table 6. Table 6 Main security scenarios Fabric Traffic management Configuration via policy Comments Nonsecure Nonsecure No Does not require a special setup. Nonsecure Secure/ nonsecure No Allows secure fabric management without the use of Secure Fabric OS. SSL certificates must be installed. Secure Secure Yes Fabric OS 4.x (and later) switches provide support for encrypted protocols. Fabric OS 3.2.
SNMP security Using SNMP components, you can program tools to view, browse, and manipulate HP switch variables and set up enterprise-level management processes. Every HP B-series switch carries an SNMP agent and management information base (MIB). The SNMP agent accesses MIB information about a device and makes it available to a network manager station. You can manipulate information of your choice by trapping MIB elements using the Fabric OS CLI (CLI), Advanced Web Tools or Fabric Manager.
Routing policies All HP StorageWorks models support port-based routing, in which the routing path chosen for an incoming frame is based only on the incoming port and the destination domain. To optimize port-based routing, you can enable the Dynamic Load Sharing feature (DLS) to balance the load across the available output ports within a domain.
Distributed Management Server The HP Fabric OS Distributed Management Server allows a SAN management application to retrieve information and administer interconnected switches, servers, and storage devices. The management server assists in the autodiscovery of switch-based fabrics and their associated topologies. A client of the management server can find basic information about the switches in the fabric and use this information to construct topology relationships.
Advanced Web Tools Advanced Web Tools is a GUI that enables administrators to monitor and manage single or small fabrics, switches, and ports from a standard workstation. Advanced Web Tools provides the administrative control point for Advanced Fabric Services, including the following: • Advanced Zoning • ISL Trunking • Advanced Performance Monitoring • Fabric Watch.
• To limit communication of individual objects. Zone objects can communicate only with other objects in the same zone. For example, consider Figure 1 on page 18, which shows the following: • Three zones, named Red, Green, and Blue, have been configured. • 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 devices.
• Their configurations persist across reboots and power cycles. For example, if two switches are connected in a fabric, they can become isolated (due to an ISL failure for instance); however, when rejoined, they maintain the same fabric configuration unless one of the switches has had a configuration change. TIP: Use the Advanced Web Tools wizard to simplify zone administration. Fabric OS 5.
Standard features
2 Optional features This chapter describes the following optional features that you can use to manage HP StorageWorks switches: • Fabric Manager, page 21 • Fabric Watch, page 22 • Fabric Access, page 23 • Secure Fabric OS, page 23 • Ports on Demand, page 23 • Extended Fabrics, page 24 • ISL Trunking, page 25 • Advanced Performance Monitoring, page 27 Fabric Manager Fabric Manager is a complete SAN management tool for HP-based SANs.
• Displays the status of critical fabric elements and key discovery data at varying levels of detail, such as high-level At-A-Glance views • Provides detailed tables that display information about switches, ports, devices, and events Fabric Manager includes the following advanced features for additional management capabilities: • Fabric, switch, and port naming • Data storage (persistent files) • Change management • License key management • HBA management • Scalable firmware download • Call home support • E
Fabric Access Fabric Access is an application programming interface (API) that enables software applications to interact with HP StorageWorks switches. It gives third-party software the ability to retrieve detailed information about fabrics, such as properties, statistics, and states of fabric elements. Fabric Access also gives applications the ability to control and configure many fabric functions and properties, including zoning.
Extended Fabrics The Extended Fabrics feature extends the distance that interswitch links (ISLs) can reach. As the distance between switches and the link speed increase, additional buffer-to-buffer credits are required to maintain maximum performance. The number of credits reserved for a port depends on the switch model and the extended ISL mode for which it is configured.
ISL Trunking The ISL Trunking feature allows ISLs between two HP StorageWorks models to merge logically into a group link. ISL Trunking reduces or eliminates situations that require static traffic routes and individual ISL management to achieve optimal performance. Trunking optimizes fabric performance by distributing traffic across the shared bandwidth of all the ISLs in a trunking group.
Figure 2 Distribution of traffic over an ISL Trunking group Trunks operate best when the cable length of each trunked link is roughly equal to the others in the trunk. The difference between cable lengths for participating links should be no more than 30 meters.
Advanced Performance Monitoring Advanced Performance Monitoring (APM) allows you to monitor the performance of networked storage resources. This product helps reduce overprovisioning and enables SAN performance tuning.
Optional features
Glossary alias A logical grouping of elements in a fabric. An alias is a collection of port numbers and connected devices, used to simplify the entry of port numbers and WWNs when creating zones. buffer-to-buffer flow control Management of the frame transmission rate in either a point-to-point topology or in an arbitrated loop. bypass circuitry Circuits that automatically remove a device from the data path when valid signals are dropped. CA Certificate authority.
credit As it applies to Fibre Channel technology, the number of receive buffers available to transmit frames between ports. deskew Related to the HP Trunking feature. The time difference between traffic traveling over each ISL other than the shortest ISL in the group and traffic traveling over that shortest ISL. The deskew number corresponds to nanoseconds divided by 10. The firmware automatically sets the minimum deskew value of the shortest ISL to 15.
Fabric Watch An optionally licensed HP software product. Fabric Watch can be accessed through either the command line or Advanced Web Tools, and it provides the ability to set thresholds for monitoring fabric conditions. failover Describes the HP StorageWorks Core Switch 2/64 process of one CP passing active status to another CP. A failover is nondisruptive. FCS Fibre Channel switch; alternatively, Fabric Configuration Server. FCS switch Relates to the HP Secure Fabric OS feature.
host A computer system that provides end users with services like computation and storage access. hot swappable A hot swappable component can be replaced under power. HTTP Hypertext Transfer Protocol. The standard TCP/IP transfer protocol used on the World Wide Web. ID_ID Insistent domain ID. A parameter of the configure command in the Fabric OS. in-band Transmission of management protocol over the Fibre Channel.
NS Name Server. The service provided by a fabric switch that stores names, addresses, and attributes related to Fibre Channel objects. Can cache information for up to 15 minutes. Also known as Simple Name Server or as a directory service. See also Simple Name Server. out-of-band Transmission of management protocol outside of the Fibre Channel network, usually over Ethernet.
primary FCS switch Relates to the Secure Fabric OS feature. The primary fabric configuration server switch actively manages security and configurations for all switches in the fabric. principal switch The first switch to boot up in a fabric. Ensures unique domain IDs among roles. protocol A defined method and set of standards for communication.
Secure Fabric OS An optionally licensed HP feature that provides advanced, centralized security for a fabric. security policy Rules that determine how security is implemented in a fabric. Security policies can be customized through HP Secure Fabric OS or HP Fabric Manager. S_ID Source ID. Refers to the native port address (24 bit address). Simple Name Server A switch service that stores names, addresses, and attributes for up to 15 minutes and provides them as required to other devices in the fabric.
telnet A virtual terminal emulation used with TCP/IP. “Telnet” is sometimes used as a synonym for the Fabric OS CLI. trap (SNMP) The message sent by an SNMP agent to inform the SNMP management station of a critical error. See also SNMP. trunking In Fibre Channel technology, a feature that enables distribution of traffic over the combined bandwidth of up to four ISLs between adjacent switches, while preserving in-order delivery. trunking ports The ports in a set of trunked ISLs.
Index A M Advanced Web Tools 17 audience 5 authorized reseller, HP 8 management server 16 B O optimizing resources through zoning 17 buffer-limited port 24 P C port, buffer-limited 24 port-based routing 15 Ports on demand 23 conventions text symbols 6 customizing zoning environments 17 D device-based routing 15 document related documentation 5 E R related documentation 5 routing policies 15 S SWL, ISL Trunking, support for 25 symbols in text 6 exchange-based routing 15 T F technical suppor
Index
