HP A7340A - Surestore FC 1Gb/2Gb Switch 16B User Manual
HP A7340A - Surestore FC 1Gb/2Gb Switch 16B User Manual

HP A7340A - Surestore FC 1Gb/2Gb Switch 16B User Manual

Hp storageworks zoning v3.1.x/4.1.x user guide (aa-rs26c-te, june 2003)
Hide thumbs Also See for A7340A - Surestore FC 1Gb/2Gb Switch 16B:
Table of Contents


zoning version 3.1.x/4.1.x
This user guide provides an overview of zoning, instructions for activating zoning, and
information about configuring and using zoning and QuickLoop zones.
hp StorageWorks
Product Version: 3.1.x/4.1.x
Part Number: AA–RS26C–TE
user guide
Third Edition (June 2003)


Table of Contents

Summary of Contents for HP A7340A - Surestore FC 1Gb/2Gb Switch 16B

  • Page 1 user guide hp StorageWorks zoning version 3.1.x/4.1.x Product Version: 3.1.x/4.1.x Third Edition (June 2003) Part Number: AA–RS26C–TE This user guide provides an overview of zoning, instructions for activating zoning, and information about configuring and using zoning and QuickLoop zones.
  • Page 2 © Copyright 1999-2003 Hewlett-Packard Development Company, L.P. 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. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
  • Page 3: Table Of Contents

    contents Contents About this Guide........... .7 Overview.
  • Page 4 Contents Zone Management ............26 Commands to Open a Transaction.
  • Page 5 Contents QuickLoop Fabric Assist ........... . 50 Fabric Assist Zone Setup .
  • Page 6 Contents Using Zoning to Administer Security ........69 Glossary.
  • Page 7: About This Guide

    about this guide About this Guide This user guide provides information to help you: Understand Zoning About this Guide Install Zoning Configure and use Zoning and QuickLoop zones Contact technical support for additional assistance “About this Guide” topics include: Overview, page 8 Conventions, page 9 Getting Help, page 11...
  • Page 8: Overview

    About this Guide Overview This section covers the following topics: Intended Audience Related Documentation Intended Audience This book is intended for use by system administrators who are experienced with the following: HP StorageWorks Fibre Channel SAN switches Fabric Operating System (FOS) V3.1.x or later Related Documentation For a list of related documents included with this product, see the “Related Documents”...
  • Page 9: Conventions

    About this Guide Conventions Conventions consist of the following: Document Conventions Text Symbols Document Conventions The document conventions included in Table 1 apply in most cases. Table 1: Document Conventions Element Convention Cross-reference links Blue text: Figure 1 Key and field names, menu items, Bold buttons, and dialog box titles Italics...
  • Page 10 About this Guide Note: Text set off in this manner presents commentary, sidelights, or interesting points of information. Zoning Version 3.1.x/4.1.x User Guide...
  • Page 11: Getting Help

    About this Guide Getting Help If you still have a question after reading this guide, contact an HP authorized service provider or access our website: http://www.hp.com. HP Technical Support Telephone numbers for worldwide technical support are listed on the following HP website: http://www.hp.com/support/.
  • Page 12 About this Guide Zoning Version 3.1.x/4.1.x User Guide...
  • Page 13: Introducing Zoning

    Introducing Zoning This chapter provides the following information: Overview, page 14 License Activation, page 15 Zoning Version 3.1.x/4.1.x User Guide...
  • Page 14: Overview

    Introducing Zoning Overview A zone in a fabric is a set of devices that have access to one another. All devices connected to a fabric may be configured into one or more zones. Every zone has at least one member. Empty zones are not allowed. Zoning allows partitioning of a Storage Area Network (SAN) into logical groupings of devices that access each other.
  • Page 15: License Activation

    Introducing Zoning License Activation Before using a feature verify that the specific license is activated. Use the licenseShow command to view a list of all licenses activated on your switch, as shown in the example below. If the necessary license is not included in the list, continue with License Activation Using Telnet on page 16 or...
  • Page 16: License Activation Using Telnet

    Introducing Zoning License Activation Using Telnet switch:admin> licenseshow SdcReRcbSbjedSfa: Web license SdcReRcbSbjedSfb: Zoning license SdcReRcbSbjedSd: QuickLoop license SdcReRcbSbjedSfe: Fabric license SdcReRcbSbjedSff: Remote Switch license SdcReRcbSbjedSfg: Remote Fabric license SdcReRcbSbjedSfh: Extended Fabric license SdcReRcbSbjedSfj: Entry Fabric license SdcReRcbSbVedSfM: Fabric Watch license SdcReRcbSbXedSfO: Performance Monitor license SdcReRcbSbbedSfS:...
  • Page 17: License Activation Using Web Tools

    Introducing Zoning 2. Verify the license was added by entering the licenseshow command, as shown in Figure 1. The feature is now activated and available. License Activation Using Web Tools If a Web Tools license is activated, Web Tools can be used to activate additional licenses.
  • Page 18 Introducing Zoning Zoning Version 3.1.x/4.1.x User Guide...
  • Page 19: Zoning Concepts

    Zoning Concepts This chapter provides the following information: About Zoning, page 20 Guidelines to Setting Up Zoning, page 21 Zone Definitions, page 22 Zone Management, page 26 Zoning Schemes, page 28 Implementing Zoning, page 30 Zone Merging Scenarios, page 40 Rules of Zoning Architecture, page 43 Zoning Version 3.1.x/4.1.x User Guide...
  • Page 20: About Zoning

    Zoning Concepts About Zoning A zone is a specified group of fabric-connected devices, also called zone objects. Any device, or zone object, connected to the fabric can be included in one or more zones. Each zone object within a zone can communicate only with other zone objects within the same zone;...
  • Page 21: Guidelines To Setting Up Zoning

    Zoning Concepts Guidelines to Setting Up Zoning Below are some guidelines for setting up zoning in your fabric: Create a detailed diagram of the fabric, showing all the switches with their inter-switch links (ISLs). The diagram will help to account for every port in the fabric.
  • Page 22: Zone Definitions

    Zoning Concepts Zone Definitions A Zone in a fabric is a set of devices that have access to one another. All devices connected to a fabric may be configured into one or more zones. Every zone has at least one zone object. Empty zones are not allowed. The zone objects are described by a semicolon-separated list of member definitions.
  • Page 23: Selecting Ports On The Core Switch 2/64

    Zoning Concepts Selecting Ports on the Core Switch 2/64 The commands used to administer the Fabric OS V4.1 require specification of the slot and area numbers. These commands use a common specification method. Area numbers distinguish StorageWorks Core switch ports that have the same port number but are on different slots.
  • Page 24: Zone Objects And Aliases

    Zoning Concepts Table 2: Area and Port Mappings (Continued) Slot Number Area and Port Mappings on a Switch Slot 8 Area numbers range from 16 to 31 Port numbers range from 0 to 15 Slot 9 Area numbers range from 32 to 47 Port numbers range from 0 to 15 Slot 10 Area numbers range from 48 to 63...
  • Page 25: Zone Configurations

    Zoning Concepts Zone Configurations A zone configuration is a group of zones that are enforced whenever that zone configuration is enabled. A zone can be included in more than one zone configuration. To define a zone configuration, specify the list of zones to be included and assign a zone configuration name.
  • Page 26: Zone Management

    Zoning Concepts Zone Management Zoning may be managed one of three ways: either by logging into the switch via telnet, via Web Tools, or via Fabric Manager. Any switch in the fabric can be used to make changes to the zoning configuration. The changes will be replicated to all the other switches in the fabric only if commands which “close a transaction”...
  • Page 27: Commands To Close A Transaction

    Zoning Concepts Create a qloop qloopCreate Delete a qloop qloopDelete Remove a member from a configuration qloopRemove Add a member to a zone zoneAdd Create a zone zoneCreate Delete a zone zoneDelete Remove a member from a zone zoneRemove Commands to Close a Transaction The following commands close a transaction: Disable a zone configuration cfgDisable...
  • Page 28: Zoning Schemes

    Zoning Concepts Zoning Schemes Zone schemes are the method in which a zone is established. A zone is established by identifying zone objects by using one or more of the following schemes: the switch and port, World Wide Name (WWN), or AL_PA. The zoning schemes are defined below.
  • Page 29: Portzoneshow Output

    Zoning Concepts When zoning is disabled, the fabric is in a non-zoning mode, and devices can freely access other devices in the fabric. When zoning is enabled, zoning is enforced throughout the fabric, and devices can communicate only within their zones.
  • Page 30: Implementing Zoning

    Zoning Concepts Implementing Zoning Zoning can be implemented and administered from any switch in the fabric that has a Zoning license enabled. When a change in the configuration is saved, enabled, or disabled per the transactional model, it is automatically distributed to all switches in the fabric.
  • Page 31: Review Current Configurations

    Zoning Concepts Review Current Configurations Use the cfgShow command to show all currently defined configurations and the effective configuration. test180_Jr:admin>cfgShow Defined configuration cfg: cfg1 ql_zone1; al_zone2; fabric_zone1; fabric_zone2 zone: fabric_zone1 Fabric_ServerA; Fabric_StorageA zone: fabric_zone2 Fabric_ServerB; Fabric_StorageB zone: ql_zone1 Private_ServerA; Private_StorageA zone: ql_zone2 Private ServerB;...
  • Page 32: Create An Alias

    Zoning Concepts zone: ql_zone1 zone: ql_zone2 test180_Jr:admin> <END> Create an Alias An alias must be a unique alpha-numeric string beginning with an alpha character. The underscore character (_) is allowed and alias names are case sensitive. For example, nt_hosts is not the same name as NT_Hosts. Note: Aliases can greatly simplify the administrative process;...
  • Page 33: Define A Zone Configuration

    Zoning Concepts Use the zoneCreate command to create a zone using the newly created aliases from above as shown in this example. test180_Jr:admin>zoneCreate “fabric_zone1”, “RAID_1_NodeName; alias by port level” Use the zoneCreate command to create a zone without using aliases as shown in this example.
  • Page 34: Review The Enabled Configuration

    Zoning Concepts When a zone configuration is enabled the following detailed list of events occur. Registered State Change Notifications (RSCNs) are sent to all fabric devices within the zone, notifying these devices to re-query the name server to discover available devices that can be accessed. All zones within the configuration are enabled.
  • Page 35 Zoning Concepts alias: Private_ServerA alias: Private_ServerB alias: Private_StorageA alias: Private_StorageB Effective configuration: cfg: cfg1 zone: fabric_zone1 50:06:0b:00:00:06:9a:d6 50:06:04:82:bc:01:9a:1b zone: fabric_zone2 50:06:0b:00:00:06:ad:10 50:06:04:82:bc:01:9a:1c zone: ql_zone1 zone: ql_zone2 test180_Jr:admin> <END> Zoning Version 3.1.x/4.1.x User Guide...
  • Page 36: Modifying Configurations

    Zoning Concepts Modifying Configurations To make changes to an existing configuration, add, delete, or remove individual elements to create the desired configuration. Once the changes have been made, save the configuration. This ensures the configuration is permanently saved in the switch, and it also ensures that the configuration is replicated throughout the fabric.
  • Page 37: Adding A New Fabric

    Zoning Concepts Adding a New Fabric Adding a new fabric that has no zone configuration information to an existing fabric is very similar to adding a new switch. All switches in the new fabric inherit the zoning configuration data. If a zone configuration is in effect, then the same configuration becomes the enabled configuration.
  • Page 38: Merging Rules

    Zoning Concepts Merging Rules If the local and adjacent zone database configurations are the same, they will remain unchanged after the merge. If there is an effective configuration between two switches, the zone configuration in effect must be the same for the fabrics to merge. If a zoning object has the same name in both the local and adjacent defined configurations, the object types and member lists must also be the same.
  • Page 39: Merge Conflicts

    Zoning Concepts Merge Conflicts When a merge conflict is present, a merge will not take place and the ISL will segment. Below is a list of possible reasons for merge conflicts. Use the switchshow command to obtain additional information about possible merge conflicts, as many non-zone related configuration parameters may cause conflicts If the fabrics have different zone configuration data, the two sets of zone...
  • Page 40: Zone Merging Scenarios

    Zoning Concepts Zone Merging Scenarios Following are the various Zone Merge scenarios. The “Expected Results” column gives the user an idea of how to do successful merges quickly. The table also gives good guidelines of what to do to avoid merge problems. Table 3: Zone Merging Scenarios Description Switch A...
  • Page 41 Zoning Concepts Table 3: Zone Merging Scenarios (Continued) Description Switch A Switch B Expected Results Switch A does not defined: none defined:cfg1 Switch A will absorb the have a defined effective: none zone1: ali1; ali2 configuration from the configuration. effective: cfg1 fabric, with cfg1 as the effective cfg.
  • Page 42: Resolving Zone Conflicts

    Zoning Concepts Table 3: Zone Merging Scenarios (Continued) Description Switch A Switch B Expected Results Same content; defined: cfg1 defined: cfg2 Fabric segments due to different effective zone1: ali1; ali2 zone1: ali1; ali2 Zone Conflictcfg cfg name. effective: cfg1 effective:cfg2 mismatch.
  • Page 43: Rules Of Zoning Architecture

    Zoning Concepts Rules of Zoning Architecture Here is a list of the rules of zoning architecture. Rule 1 Type of Zoning (Hard or Soft)—If security is a priority, then a Hard zoning is recommended. Rule 2 The use of aliases is optional with zoning. Using aliases should force some structure when defining zones.
  • Page 44 Zoning Concepts Rule 7 Zone changes in a production fabric can result in a disruption of I/O under conditions where an RSCN is issued as a result of a zone change and the host bus adapter (HBA) is unable to process the RSCN quickly enough.
  • Page 45: Using Quickloop Zones

    Using QuickLoop Zones In addition to zoning fabrics, explained in Chapter 2, zoning can also be used to zone QuickLoop, allowing arbitrated loops to be attached to a fabric. The QuickLoop and zoning combination allow a private host to fully participate in a Storage Area Network (SAN).
  • Page 46: Quickloop Zones

    Using QuickLoop Zones QuickLoop Zones QuickLoop zones are hardware enforced. Switch hardware prevents unauthorized data transfer between ports within the zone, allowing devices to be partitioned into zones to restrict system access to selected devices. Once devices are included in a zone, they are visible only to other devices within that zone.
  • Page 47: Quickloop Zoning Advantages

    Using QuickLoop Zones QuickLoop Zoning Advantages In addition to the advantages of fabric zoning—security, customized environments, and optimization of IT resources—QuickLoop zoning can protect devices from disruption by unrelated devices during a critical process; for example, during a tape backup session. In a QuickLoop with zoning enabled, transmission of the loop initialization primitive (LIP) signal and loop initialization are controlled by the switch.
  • Page 48: Configuring Quickloop Zones

    Using QuickLoop Zones Configuring QuickLoop Zones To configure QuickLoop zoning, perform these steps as described in the following sections. 1. Create a QuickLoop (Only required when zoning by AL_PA.) 2. Define a QuickLoop zone 3. Define a QuickLoop zone configuration Create a QuickLoop Refer to the HP StorageWorks QuickLoop Fabric Assist Version 3.1.x User Guide for information about creating a QuickLoop.
  • Page 49: To Specify By Al_Pa

    Using QuickLoop Zones To Specify by AL_PA Specify the QuickLoop zone name, in quotes, with the QuickLoop name and desired AL_PAs, in quotes. All AL_PAs must be associated with a QuickLoop name. For example: Zonecreate “QLZoneName”, “qloop1[01,02,04,e0,e1,e2]” To specify a Combination of looplet and AL_PA Example: Zonecreate “QLZoneName”, “0,2;...
  • Page 50: Quickloop Fabric Assist

    Using QuickLoop Zones QuickLoop Fabric Assist Fabric Assist allows a private host to talk to public/private targets located anywhere within the fabric (if no zoning exists). Private hosts and targets are put into a single Fabric Assist zone, and are identified either by domain and port number or by WWN.
  • Page 51: Fabric Assist Zone Setup

    Using QuickLoop Zones Fabric Assist Zone Setup Zoning commands with the prefix fazone that mirror other zoning commands are: fazoneCreate, fazoneAdd, fazoneDelete, fazoneRemove, and fazoneShow. Private hosts are indicated within a fazone or alias by “H{}”. Within a single fazone or alias, multiple initiators are detected during zone creation process. CfgEnable can fail if multiple initiators are found in a single fazone.
  • Page 52: Fabric Assist Debugging

    Using QuickLoop Zones Fabric Assist Debugging The FaDebugShow command can help troubleshoot FA issues by displaying internal Fabric Assist tables. FaDebugShow: Displays the internal Fabric Assist tables. Zoning Version 3.1.x/4.1.x User Guide...
  • Page 53: A Zoning Concepts And Guidelines

    Zoning Concepts and Guidelines This appendix provides the following information: Storage Area Networks, page 54 Zoning, page 55 Zone Management, page 56 Zoning Implementations, page 57 Fabric-Based Zoning Philosophies, page 58 The Effect of Zoning on RSCN Delivery, page 60 Implementing Zoning, page 62 Deviations from Single HBA...
  • Page 54: Storage Area Networks

    Zoning Concepts and Guidelines Storage Area Networks The storage area network brings the connectivity of networks to the SCSI protocol. The Fibre Channel standard provides for up to 16 million devices attached to the network. This change in scale required a new method to discover the devices on the fabric, so that discovery can be accomplished in an acceptable time frame.
  • Page 55: Zoning

    Zoning Concepts and Guidelines Zoning Zoning is essentially a filter that is applied by the nameserver against the query from the initiator which limits the information returned by the nameserver to the initiator. A zone contains the WWN of the initiator and the WWN of any devices that it is allowed to access.
  • Page 56: Zone Management

    Zoning Concepts and Guidelines Zone Management Management of the zone information is provided via command line (telnet), Web Tools, and Fabric API via third-party software. There are three components to the zone information: the zone objects, the zone name, and the zone configuration. One or more objects (devices) are placed into a zone and given a zone name.
  • Page 57: Zoning Implementations

    Zoning Concepts and Guidelines Zoning Implementations Zoning can be enabled on the host, in the switch fabric, and in most storage units. Storage units typically implement LUN based zoning, commonly referred to as LUN masking. Fabric switches will implement nameserver-based zoning where the zone members are identified by WWN or port location in the fabric.
  • Page 58: Fabric-Based Zoning Philosophies

    Zoning Concepts and Guidelines Fabric-Based Zoning Philosophies This is perhaps the most controversial aspect of zoning. There are a number of philosophies for the implementation of fabric zoning. All will work in most cases. However, there are pros and cons to each form. The primary forms are no fabric zoning, single HBA, grouping by operating system, grouping by application, and port allocation.
  • Page 59: Port Allocation

    Zoning Concepts and Guidelines Port allocation There is an option to zone based on switch port rather than the WWN of the device. This provides some security to the fabric, but requires very solid processes to prevent the incorrect device from being attached to the wrong ports. This form of zoning should be avoided unless the administration team has very rigidly enforced processes for port and device allocation in the fabric.
  • Page 60: The Effect Of Zoning On Rscn Delivery

    Zoning Concepts and Guidelines The Effect of Zoning on RSCN Delivery Whenever a change occurs in the nameserver, such as a device addition or removal from the fabric, a registered state change notification (RSCN) is required to be generated. In the absence of zoning, an RSCN is sent to all devices on the fabric. Each device should then query the nameserver to determine how the membership of the fabric has changed.
  • Page 61: Rscn Delivery

    Zoning Concepts and Guidelines Table 4: RSCN Delivery HP FOS HP FOS V2.x V2.6/3.0.2/ HP FOS External Events up to V2.5 HP FOS V3.0 V3.1/4.1 Fabric reconfigure Fabric RSCN Fabric RSCN to No RSCN No RSCN with no domain to all devices all devices change Switch disable...
  • Page 62: Implementing Zoning

    Zoning Concepts and Guidelines Implementing Zoning The first step to implementing zoning is to devise a naming convention. It is important that this convention be consistent, that it produces meaningful names, and that it be used consistently. We will then take a look at implementing zoning in a new fabric and then how to implement it in an existing fabric that does not conform to the single HBA zoning method.
  • Page 63: Implementing Zoning On An Existing Fabric

    Zoning Concepts and Guidelines Configuration naming is more flexible. In general though there should be one configuration named “PROD fabricname”. Fabricname is the name that the fabric has been designated. The purpose of the PROD configuration is to easily identify the configuration that can be implemented and provide the most generic services.
  • Page 64: Deviations From Single Hba Zoning

    Zoning Concepts and Guidelines Deviations from Single HBA Zoning Certainly there are cases when the need will arise to deviate from the single HBA zoning. Such cases include clustered systems, SAN Management appliances, and when initiators must communicate with each other because another protocol like IP is being utilized.
  • Page 65: Hardware-Enforced Zoning In An Hp Fabric

    Zoning Concepts and Guidelines Hardware-Enforced Zoning in an HP Fabric All zoning employs the nameserver to limit the information returned to an initiator in response to a nameserver query. This is referred to as soft zoning. If an initiator has knowledge of the network address of a target device, it does not need to query the nameserver to access it.
  • Page 66: Fabrics Composed Of Storageworks 2 Gb San Switch And Storageworks

    Zoning Concepts and Guidelines Fabrics Composed of StorageWorks 2 Gb SAN Switch and StorageWorks Core Switch Models StorageWorks 2 Gb SAN switches and StorageWorks Core switches enable hardware enforced zoning on Domain/Port zones and WWN zones. Mixed zones will not be hardware enforced. Overlap of like zone types will not result in the loss of hardware enforcement.
  • Page 67 Zoning Concepts and Guidelines Hardware enforcement has limitations. Each Quad has 64 SID CAM (Source ID Content Accessible Memory) entries. All four ports on the Quad share these SID CAM entries. When these SID CAM entries are exceeded, then the hardware zoning reverts to SOFT zoning.
  • Page 68 Zoning Concepts and Guidelines Zoning Version 3.1.x/4.1.x User Guide...
  • Page 69: Using Zoning To Administer Security

    Using Zoning to Administer Security Zones can be used to provide controlled access to fabric segments and to establish barriers between operating environments, such as to isolate systems with different uses or protect systems in a heterogeneous environment. For example, when Zoning is in secure mode, merge operations do not occur.
  • Page 70 Using Zoning to Administer Security Zoning Version 3.1.x/4.1.x User Guide...
  • Page 71: Glossary

    glossary Glossary This glossary defines terms used in this guide or related to this product and is not a comprehensive glossary of computer terms. Glossary 16-port card The Fibre Channel port card provided with the StorageWorks Core switch. Contains 16 Fibre Channel ports and the corresponding LEDs indicating port status and speed.
  • Page 72 Glossary Alias An alternate name for an element or group of elements in the fabric. Aliases can be used to simplify the entry of port numbers and WWNs when creating zones. Alias Address Identifier An address identifier recognized by a port in addition to its standard identifier. An alias address identifier may be shared by multiple ports.
  • Page 73 Glossary Asynchronous Transfer Mode. A transport used for transmitting data over LANs or WANs that transmit fixed-length units of data. Provides any-to-any connectivity, and allows nodes to transmit simultaneously. Auto-negotiate Speed Process that allows two devices at either end of a link segment to negotiate common features, speed (e.g., 1 or 2 Gbps) and functions.
  • Page 74 Glossary Beginning Running Disparity The disparity at the transmitter or receiver when the special character associated with an ordered set is encoded or decoded. See also disparity. Bit Error Rate. The rate at which bits are expected to be received in error. Expressed as the ratio of error bits to total bits transmitted.
  • Page 75 Glossary Boot Monitor Code used to initialize the CP (control processor) environment after powering on. Identifies the amount of memory available and how to access it, and retrieves information about system buses. Broadcast The transmission of data from a single source to all devices in the fabric, regardless of zoning. See also multicast, unicast.
  • Page 76 Glossary Class F Connectionless service for control traffic between switches, with notification of delivery or non-delivery of data between the E_Ports. Class of Service A specified set of delivery characteristics and attributes for frame delivery. Command line interface. Interface that depends entirely on the use of commands, such as through telnet or SNMP, and does not involve a Graphic User Interface (GUI).
  • Page 77 Glossary Configuration How a system is set up. May refer to hardware or software. Hardware: The number, type, and arrangement of components that make up a system or network. Software: The set of parameters that guide switch operation. May include general system parameters, IP address information, Domain ID, and other information.
  • Page 78 Glossary CT_HDR Common Transport Header. A header that conforms to the Fibre Channel Common Transport (FC_CT) protocol. CT_IU Common Transport Information Unit. An information unit that conforms to the Fibre Channel Common Transport (FC_CT) protocol. Current Fill Word The fill word currently selected by the LPSM. See also fill word, LPSM.
  • Page 79 Glossary Device Connection Controls Enables organizations to bind an individual device port to a set of one or more switch ports. Device ports are specified by a WWN and typically represent HBAs (servers). See also access control lists. Device A disk, a RAID, or an HBA. Disparity The relationship of ones and zeros in an encoded character.
  • Page 80 Glossary E_Port Expansion Port. A type of switch port that can be connected to an E_Port on another switch to create an ISL. See also ISL. EE_Credit End-to-end Credit. The number of receive buffers allocated by a recipient port to an originating port.
  • Page 81 Glossary Exchange The highest level Fibre Channel mechanism used for communication between N_Ports. Composed of one or more related sequences, and can work in either one or both directions. Extended Fabric An HP product that runs on Fabric OS and allows creation of a Fibre Channel fabric interconnected over distances of up to 100 kilometers.
  • Page 82 Glossary Fabric Configuration Server One or more designated HP switches that store and manage the configuration and security parameters for all other switches in the fabric. These switches are designated by WWN, and the list of designated switches is known fabric-wide. Fabric Manager An HP product that works in conjunction with Web Tools to provide a graphical user interface for managing switch groups (such as the SAN Switch Integrated/32) as a single unit, instead of as...
  • Page 83 Glossary FC-FLA The Fibre Channel Fabric Loop Attach standard defined by ANSI. FCIA Fibre Channel Industry Association. An international organization of Fibre Channel industry professionals. Among other things, provides oversight of ANSI and industry developed standards. Fibre Channel Protocol. Mapping of protocols onto the Fibre Channel standard protocols. For example, SCSI FCP maps SCSI-3 onto Fibre Channel.
  • Page 84 Glossary Firmware Download Loading firmware down from a server into a switch. Firmware The basic operating system provided with the hardware. FL_Port Fabric Loop Port. A port that is able to transmit under fabric protocol and also has arbitrated loop capabilities.
  • Page 85 Glossary FS_REQ Fibre Channel Services Request. A request for a Fibre Channel services function, or notification of a fabric condition or event. FS_RJT Fibre Channel Services Reject. An indication that a request for Fibre Channel services could not be processed. Fibre Channel Service.
  • Page 86 Glossary GBIC Gigabit interface converter. A removable serial transceiver module that allows gigabaud physical-level transport for Fibre Channel and gigabit Ethernet. Typically refers only to the SC-form factor transceivers. See also SFP. Gbps Gigabits per second (1,062,500,000 bits/second). GBps Gigabytes per second (1,062,500,000 bytes/second). Half-duplex A mode of communication that allows a port to either transmit or receive frames at any time, but not simultaneously (with the exception of link control frames, which can be transmitted at any...
  • Page 87 Glossary Host A computer that accesses storage devices over the fabric. May also be referred to as a server. See also workstation. Hot Pluggable A FRU capability that indicates it may be extracted or installed while customer data is otherwise flowing in the chassis.
  • Page 88 Glossary Isolated E_Port An E_Port that is online but not operational due to overlapping Domain IDs or nonidentical parameters (such as E_D_TOVs). See also E_Port. Interswitch Link. a Fibre Channel link from the E_Port of one switch to the E_Port of another. See also E_Port, cascade, ISL Trunking.
  • Page 89 Glossary L_Port Loop Port. A node port (NL_Port) or fabric port (FL_Port) that has arbitrated loop capabilities. An L_Port can be in one of two modes: Fabric mode: Connected to a port that is not loop capable, and using fabric protocol. Loop mode: In an arbitrated loop and using loop protocol.
  • Page 90 Glossary Loop Failure Loss of signal within a loop for any period of time, or loss of synchronization for longer than the time-out value. See also error. Loop Initialization The logical procedure used by an L_Port to discover its environment. Can be used to assign AL_PA addresses, detect loop failure, or reset a node.
  • Page 91 Glossary Modem Serial Port The upper serial port on the CP Card of the StorageWorks Core switch. Can be used to connect the CP Card to a modem with a standard 9-pin modem cable. Consists of a DB-9 connector wired as a RS-232 device, and can be connected by serial cable to a DCE device.
  • Page 92 Glossary NL_Port Node Loop Port. A node port that has arbitrated loop capabilities. Used to connect an equipment port to the fabric in a loop configuration through an FL_Port. See also N_Port, Nx_Port. Node Name The unique identifier for a node, communicated during login and port discovery. Node A Fibre Channel device that contains an N_Port or NL_Port.
  • Page 93 Glossary Ordered Set A transmission word that uses 8B/10B mapping and begins with the K28.5 character. Ordered sets occur outside of frames, and include the following items: Frame delimiters: Mark frame boundaries and describe frame contents. Primitive signals: Indicate events. Primitive sequences: Indicate or initiate port states.
  • Page 94 Glossary Point-to-point A Fibre Channel topology that employs direct links between each pair of communicating entities. See also topology. Port Cage The metal casing extending out of the optical port on the switch, and in which the SFP can be inserted.
  • Page 95 Glossary Public Device A device that supports arbitrated loop protocol, can interpret 8-bit addresses, and can log into the fabric. Public Loop An arbitrated loop that includes a participating FL_Port, and may contain both public and private NL_Ports. Public NL_Port An NL_Port that logs into the fabric, can function within either a public or a private loop, and can communicate with either private or public NL_Ports.
  • Page 96 Glossary RAID Redundant Array of Independent Disks. A collection of disk drives that appear as a single volume to the server and are fault tolerant through mirroring or parity checking. See also JBOD. Remote Fabric A fabric that spans across WANs by using protocol translation (a process also known as tunneling) such as Fibre Channel over ATM or Fibre Channel over IP.
  • Page 97 Glossary RSCN Registered State Change Notification. A switch function that allows notification of fabric changes to be sent from the switch to specified nodes. RX_ID Responder Exchange Identifier. A 2-byte field in the frame header used by the responder of the Exchange to identify frames as being part of a particular exchange.
  • Page 98 Glossary Small form factor pluggable. A transceiver used on 2 Gbps switches that replaces the GBIC. Refers to the LC-form factor transceiver. See also GBIC. SID/DID Source identifier/Destination identifier. S_ID is a 3-byte field in the frame header that is used to indicate the address identifier of the N_Port from which the frame was sent.
  • Page 99 1.0625-Gbps link speeds. May also refer to the type of GBIC or SFP. See also LWL. Tachyon A chip developed by Hewlett-Packard, and used in various devices. This chip has FC-0 through FC-2 on one chip. Target A storage device on a Fibre Channel network.
  • Page 100 Glossary Transceiver Device that converts one form of signaling to another for transmission and reception; in fiber optics, it refers to optical and electrical. Transfer State The state in which a port can establish circuits with multiple ports without reentering the arbitration cycle for each circuit.
  • Page 101 Glossary Upper-level Protocol. The protocol that runs on top of Fibre Channel. Typical upper-level protocols are SCSI, IP, HIPPI, and IPI. Unicast The transmission of data from a single source to a single destination. See also broadcast, multicast. user account A login intended for use by the customer to monitor, but not control, switch operation.
  • Page 102 Glossary Zone A set of devices and hosts attached to the same fabric and configured as being in the same zone. Devices and hosts within the same zone have access permission to others in the zone, but are not visible to any outside the zone. See also Zoning.
  • Page 103: Index

    index adding switches getting help administering security aliases arbitrated loop physical address (AL_PA) hardware zones architecture, zoning help, obtaining audience authorized reseller, HP authorized reseller storage website technical support configuring HP Web Tools QuickLoop zones Fabric Assist conventions QuickLoop document text symbols creating implementing zoning...
  • Page 104 Index configuration creating websites defining HP storage zones WWN zone related documentation zone configurations, enabling zoning architecture switch adding customization symbols in text defining devices implementation technical support, HP multiple text symbols Quickloops Zoning Version 3.1.x/4.1.x User Guide...

Table of Contents