HP StorageWorks MSA 2/8 - SAN Switch User Manual
Hp storageworks advanced performance monitoring v3.1.x/4.1.x user guide (aa-rts4c-te, june 2003)
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user guide
hp StorageWorks
advanced performance
monitoring version 3.1.x/4.1.x
Product Version: 3.1.x/4.1.x
Third Edition (June 2003)
Part Number: AA–RTS4C–TE
This user guide provides an overview of and installation instructions for Advanced Performance
Monitoring. In addition, this guide provides information on configuring and using the
Advanced Performance Monitoring telnet commands.
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Table of Contents
Related Manuals for HP StorageWorks MSA 2/8 - SAN Switch
Summary of Contents for HP StorageWorks MSA 2/8 - SAN Switch
- Page 1 user guide hp StorageWorks advanced performance monitoring version 3.1.x/4.1.x Product Version: 3.1.x/4.1.x Third Edition (June 2003) Part Number: AA–RTS4C–TE This user guide provides an overview of and installation instructions for Advanced Performance Monitoring. In addition, this guide provides information on configuring and using the Advanced Performance Monitoring telnet commands.
- 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.
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Page 3: Table Of Contents
contents Contents About this Guide........... .7 Overview. - Page 4 Contents Adding Graphs to a Canvas ..........33 Saving Canvas Configurations .
- Page 5 Contents Canvas of eight performance monitoring graphs ....... 33 Saved canvas configurations ..........34 Setting end-to-end monitors on a port .
- Page 6 Contents Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide...
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Page 7: About This Guide
about this guide About this Guide This user guide provides information to help you: Understand and install Advanced Performance Monitoring About this Guide Configure and use the Advanced Performance Monitoring telnet commands Contact technical support for additional assistance “About this Guide” topics include: Overview, page 8 Conventions, page 9 Getting... -
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 section of the Release Notes that came with your switch. -
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. Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide...
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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 Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide...
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Page 13: Introducing Advanced Performance Monitoring
Introducing Advanced Performance Monitoring This chapter provides the following information: Overview, page 14 Terminology Used in this Document, page 15 Features, page 16 Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 14: Overview
Introducing Advanced Performance Monitoring Overview Advanced Performance Monitoring is a comprehensive tool for monitoring the performance of networked storage resources. This tool helps reduce thea total cost of ownership and over-provisioning while enabling SAN performance tuning, reporting of service level agreements, and greater administrator productivity. Advanced Performance Monitoring provides SAN performance management through an end-to-end monitoring system that provides: Increased end-to-end visibility into the fabric... -
Page 15: Terminology Used In This Document
Introducing Advanced Performance Monitoring Terminology Used in this Document Table 2 shows the terminology used in this book. Table 2: Terminology Term Definition AL_PA Arbitrated Loop Physical Address. An 8-bit value used to uniquely identify an individual port within a loop. A loop may have one or multiple AL_PAs. -
Page 16: Features
Introducing Advanced Performance Monitoring Features The Advanced Performance Monitoring product: Measures the bandwidth consumed by individual routes (host-target pairs) Provides device performance measurements by port, AL_PA, and LUN Reports CRC error measurement statistics Measures Trunking performance Compares IP versus SCSI traffic on each port Includes a wide range of pre-defined reports Allows you to create customized user-defined reports Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 17: Activating Advanced Performance Monitoring
Activating Advanced Performance Monitoring This chapter provides the following information: Overview, page 18 Verifying Activated Licenses, page 19 Activating the License Using Telnet, page 21 Activating the License Using Web Tools, page 22 Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 18: Overview
Activating Advanced Performance Monitoring Overview To enable Advanced Performance Monitoring, you must install a license on each switch that will use this feature. Contact your switch supplier to obtain a license. You can install an Advanced Performance Monitoring license through telnet commands or through Web Tools. -
Page 19: Verifying Activated Licenses
Activating Advanced Performance Monitoring Verifying Activated Licenses You can display the current licenses using the licenseshow command. To verify activated licenses: 1. Open a telnet or serial connection to the switch. 2. Log into the switch as Admin. The default password is “password”. 3. - Page 20 Activating Advanced Performance Monitoring switch:admin> licenseshow SdcReRcbSbjedSfa: Web license SdcReRcbSbjedSfb: Zoning license SdcReRcbSbjedSfc: 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: Trunking license SdcReRcbSbjedSfy:...
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Page 21: Activating The License Using Telnet
Activating Advanced Performance Monitoring Activating the License Using Telnet Activate licenses using the licenseadd command. To activate an Advanced Performance Monitoring license using the CLI: 1. Open a telnet or serial connection to the switch. 2. Log into the switch as Admin. The default password is “password”. 3. -
Page 22: Activating The License Using Web Tools
Activating Advanced Performance Monitoring Activating the License Using Web Tools To activate an Advanced Performance Monitoring license using Web Tools: 1. Launch a web browser by entering the switch name or IP address in the Location/Address field of the browser and click Enter. Web Tools launches, displaying the Fabric View. -
Page 23: Using Advanced Performance Monitoring
Using Advanced Performance Monitoring This chapter provides the following information: Overview, page 24 Managing Performance Monitoring Using Web Tools, page 25 — Using Performance Graphs, page 27 — User-defined Graphs, page 29 — Performance Graph Formats, page 30 — Configuring a Performance Graph Canvas, page 32 Telnet Commands, page 37... -
Page 24: Overview
Using Advanced Performance Monitoring Overview You can administer Advanced Performance Monitoring through telnet commands or through Web Tools. This chapter provides a brief description of performance monitoring through Web Tools. It also describes how to fully administer Advanced Performance Monitoring through telnet commands. For additional information about performance monitoring through Web Tools, refer to the HP StorageWorks Web Tools Version 3.1.x/4.1.x User Guide. -
Page 25: Managing Performance Monitoring Using Web Tools
Using Advanced Performance Monitoring Managing Performance Monitoring Using Web Tools Use Web Tools to do the following: View pre-defined reports for AL_PA, end-to-end, and filter-based performance monitoring Create user-definable reports View performance canvas for application level or fabric level views Access configuration editor (save, copy, edit, and remove multiple configurations) Save persistent graphs across reboots (saves parameter data across reboots) -
Page 26: Switch View In Web Tools
Using Advanced Performance Monitoring Figure 1: Switch View in Web Tools 3. Click on the Perf icon in the Switch View to launch the Performance Monitor window. Figure 2 shows the Performance Monitor window. Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 27: Using Performance Graphs
Using Advanced Performance Monitoring Figure 2: Performance Monitor window Using Performance Graphs Graphs are provided to simplify performance monitoring. A wide range of end-to-end fabric, LUN, device, and port metrics graphs are included. Figure 3 lists the performance graphs available. Basic Monitoring graphs are accessible on Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 28: Pre-Defined Performance Graphs
Using Advanced Performance Monitoring switches that do not have a Performance Monitoring license activated. The Advanced Monitoring graphs give more detailed performance information to aid with fabric management. Table 3: Pre-defined Performance Graphs Basic Monitoring Description Port Throughput Displays the performance of a port based in four-byte frames received and transmitted. -
Page 29: User-Defined Graphs
Using Advanced Performance Monitoring Figure 3: Accessing pre-defined performance graphs User-defined Graphs The pre-defined graphs can be modified based on parameter fields such as SID/DID, LUN, AL_PA, and port. These user-defined graphs can be added and saved to canvas configurations. Figure 4 shows a list of user-defined graphs defined in a canvas. -
Page 30: Performance Graph Formats
Using Advanced Performance Monitoring Figure 4: User-defined graphs Performance Graph Formats Performance graphs can be displayed as vertical bar charts, horizontal bar charts, and line charts, as shown in Figure Advanced Performance Monitoring Version 3.1.x/4.1.x User Guide... -
Page 31: Types Of Performance Graphs
Using Advanced Performance Monitoring Vertical Bar Charts Line Charts Horizontal Bar Charts Figure 5: Types of performance graphs In addition to the charts, the Advanced Performance Monitoring Resource Usage Display (shown in Figure 6) shows which filter slots have been used for each port, and which are available. -
Page 32: Configuring A Performance Graph Canvas
Using Advanced Performance Monitoring Figure 6: Advanced Performance Monitoring resource usage display Configuring a Performance Graph Canvas Use the enhanced performance monitoring in Web Tools to set up a canvas of performance graphs. Multiple canvasses can be created for different users or different scenarios. -
Page 33: Adding Graphs To A Canvas
Using Advanced Performance Monitoring Figure 7: Canvas of eight performance monitoring graphs Adding Graphs to a Canvas You can add graphs to a canvas by using the Performance Graphs menu on the Performance Monitor window. Select the graph you wish to add to the canvas from either the Basic or Advanced Monitoring submenus. -
Page 34: Saving Canvas Configurations
Using Advanced Performance Monitoring Saving Canvas Configurations You can save up to 20 individual canvasses, each with up to 8 graphs each. Save each canvas with a name and an optional brief description. To save a current canvas configuration, select the Actions menu on the Performance Monitor window. -
Page 35: Managing Performance Monitoring With Telnet Commands
Using Advanced Performance Monitoring Managing Performance Monitoring with Telnet Commands Telnet commands provide three different types of performance monitoring: AL_PA monitoring End-to-end monitoring Filter-based monitoring Note: For backward compatibility, set the environment variable FABOS_SLOTNO to a slot number. If this environment variable is set and the slot option is not specified, the value of this environment variable is used as the default slot number for the command. - Page 36 Using Advanced Performance Monitoring {offset, value 0[, value 1, ..., value 3]} In the previous example, offset (A) is the byte offset value in the header of the FC frame and value 0[, value 1, ..., value 3] (B) is a user-defined value, or a set of user-defined values.
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Page 37: Telnet Commands
Using Advanced Performance Monitoring Telnet Commands The telnet commands for Advanced Performance Monitoring become available through the shell “admin” account when the Advanced Performance Monitoring license key is installed. To use a telnet command, log into the relevant switch with administrative privileges, enter the command along with any required arguments, and press Enter. -
Page 38: Clearing The Crc Error Count
Using Advanced Performance Monitoring Example 2. The following command displays the CRC error count for AL_PA 0x01 on port 3: sw1:admin> perfShowAlpaCrc 3, 0x01 The CRC count at ALPA 0x1 on port 3 is 0x000000002. Clearing the CRC Error Count Use the perfClrAlpaCrc command to clear the CRC error count for AL_PA devices on a specific port. -
Page 39: Adding End-To-End Monitors
Using Advanced Performance Monitoring Area ID (AA) AL_PA (PP) For example, the SID 0x118a0f has Domain ID 0x11, Area ID 0x8a, and AL_PA 0x0f. (The prefix “0x” denotes a hexadecimal number.) Adding End-to-end Monitors Use the perfAddEEMonitor command to add an end-to-end monitor to a port. - Page 40 Using Advanced Performance Monitoring sw1:admin> perfAddEEMonitor 1,2, "0x051200" "0x111eef" End-to-End monitor number 0 added. ----------------------------------------------------- sw2:admin> perfAddEEMonitor 2,15, "0x111eef" "0x051200" End-to-End monitor number 1 added. Monitor 0 counts the frames that have an SID of 0x051200 and a DID of 0x111eef.
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Page 41: Setting A Mask For End-To-End Monitors
Using Advanced Performance Monitoring Setting a Mask for End-to-end Monitors End-to-end monitors count the number of words in Fibre Channel frames that match a specific SID/DID pair. If you want to match only part of the SID or DID, you can set a mask on the port to compare only certain parts of the SID or DID. With no mask set, the frame must match the entire SID and DID to trigger the monitor. -
Page 42: Displaying The End-To-End Mask Of A Port
Using Advanced Performance Monitoring Received by port Transmitted from port SID mask DID mask SID mask DID mask perfSetPortEEMask 1/2, "00:00:ff" "00:00:ff" "00:00:ff" "00:00:ff" AL_PA mask Area ID mask Domain ID mask Figure 11: Mask positions for end-to-end monitors Figure 11, a mask (“ff”) is set on slot 1, port 2 to compare the AL_PA fields on the SID and DID in all frames (transmitted and received) on port 2. -
Page 43: Displaying End-To-End Monitors
Using Advanced Performance Monitoring sw1:admin> perfSetPortEEMask 11, "00:00:ff" "00:00:ff" "00:00:ff" "00:00:ff" The EE mask on port 26 is set and EE counters are reset. sw1:admin> perfShowPortEEMask 11 The EE mask on port 26 is set by application TELNET TxSID Domain: TxSID Area: TxSID ALPA: TxDID Domain:... -
Page 44: Deleting End-To-End Monitors
Using Advanced Performance Monitoring Example 1. The following command displays all of the end-to-end monitors on port 3 at an interval of every 6 seconds. (In this example, there are three monitors on port 3, numbered 0, 1, and 2.) sw1:admin>... -
Page 45: Clearing End-To-End Monitor Counters
Using Advanced Performance Monitoring Example. The following command deletes the end-to-end monitor number 0 on port 2: sw1:admin> perfDelEEMonitor 2, 0 End-to-End monitor number 0 deleted Clearing End-to-end Monitor Counters Use the perfClearEEMonitor command to clear statistics for all end-to-end monitors on a port, or on a specified end-to-end monitor on a port. Once the command has been executed, the telnet shell will confirm that the monitor counters have been cleared. -
Page 46: Adding Standard Filter-Based Monitors
Using Advanced Performance Monitoring Adding Standard Filter-Based Monitors This section describes how to add standard filter-based monitors to a port. Use the telnet commands listed in Table 4 to define filter-based monitors on a port. Table 4: Telnet Commands to Add Filter-based Monitors Telnet Command Description perfAddReadMonitor... -
Page 47: Adding User-Defined Filter-Based Monitors
Using Advanced Performance Monitoring Adding User-Defined Filter-Based Monitors In addition to the standard filters (read, write, read/write, and frame count), you can create custom filters to qualify frames for statistics gathering to fit your own special needs. To define a custom filter, use the perfAddUserMonitor telnet command. With this command, you must specify a series of offsets, masks, and values. -
Page 48: Displaying Filter-Based Monitors
Using Advanced Performance Monitoring The hardware can manage only a limited number of unique offsets and values. If the switch does not have enough resources to create a given filter, then other filters may have to be deleted to free up resources. Example 1. - Page 49 Using Advanced Performance Monitoring Example 1. The following command displays filter monitor traffic on port 2 at an interval of once every 5 seconds. In the command output, “#CMDs” refers to the read, write, and read-write counters, and “#Frames” refers to SCSI frame, IP frame, and user-defined counters.
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Page 50: Deleting Filter-Based Monitors
Using Advanced Performance Monitoring Deleting Filter-Based Monitors To delete a filter-based monitor, first list the valid monitor numbers using the perfShowFilterMonitor command, then use the perfShowFilterMonitor command to delete a specific monitor. If you do not specify which monitor number to delete, you will be asked if you want to delete all entries. -
Page 51: Saving And Restoring Monitor Configuration
Using Advanced Performance Monitoring Saving and Restoring Monitor Configuration You can use the perfCfgSave command to save the current end-to-end and filter monitor configuration settings into flash memory. This command enables the performance monitoring configuration to be saved over power cycles. You can use the perfCfgRestore command to restore the saved monitor configuration from flash memory. -
Page 52: Resource Usage For End-To-End And Filter-Based Monitoring
Using Advanced Performance Monitoring Resource Usage for End-to-end and Filter-based monitoring The following list presents limits on the use of end-to-end and filter-based monitors due to their memory and CPU cycle requirements. End-to-end monitors use resources that are separate from filter-based monitors and zoning. -
Page 53: 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 54 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 55 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 56 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 57 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 58 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 59 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 60 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 61 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 62 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 63 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 64 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 65 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 66 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 67 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 68 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 69 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 70 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 71 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 72 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 73 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 74 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 75 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 76 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 77 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 78 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 79 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 80 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 81 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 82 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 83 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 84 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.
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Page 85: Index
index adding end-to-end monitoring 35, end-to-end monitors end-to-end monitors filter-based monitors adding AL_PA monitoring 35, clearing counters audience deleting authorized reseller, HP displaying displaying the mask restoring configuration saving configuration clearing setting a mask CRC error count end-to-end monitor counters filter-based monitor counters conventions filter-based monitoring 35,... - Page 86 Index license installation related documentation removing end-to-end monitors filter-based monitors mask for end-to-end monitors restoring monitor configuration displaying setting saving monitor configuration setting mask for end-to-end monitors perfAddEEMonitor command standard filter-based monitors perfAddIPMonitor command supported switches perfAddUserMonitor command symbols in text perfCfgRestore command perfCfgSave command perfClrAlpaCrc command...
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