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Manual HP A6829A
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ii Legal Notices The information in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to thismanual, including, but not limited to, the implied warranties ofmerchantability and fitness for a particular purpose. Hewlett-Packard shall not be h...
iii OSF /Motif is a trademark of the Open Software Foundation, Inc. in the U.S. and other countries.
v Contents About This Document 1. HP A6829A Adapter Overview About the A6829A Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Contents vi Configuring LUN 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Adding Multi-Initiator Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Multi-Initiator Support for Itanium‚-Ba...
vii Contents DOC Statement (Canada). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Spécification ATI Classe A (France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115VCCI Statement (Japan) . . . . . . . . . . . . . . . . . ...
ix Tables Table 1. HP-UX 11i Releases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiTable 2. Publishing History Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xivTable 3. Document Organization . . . . . . . . . . . . ...
xi Figures Figure 1-1. The A6829A PCI Dual Channel Ultra160 SCSI Host Bus Adapter . . . . . 4Figure 2-1. SCSI Cable for External Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Figure 2-2. Auto Termination Jumper Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4...
xiii About This Document This document describes how to install, configure, and troubleshoot HPA6829A PCI Dual Channel Ultra160 SCSI host bus adapter (HBA) onHP-UX 11.x platforms. The document printing date and part number indicate the document’scurrent edition. The printing date will change when a ...
xiv Publishing History The details of the document versions published for various HP-UXreleases are mentioned in the following table: What’s in This Document HP A6829A PCI Dual Channel Ultra160 SCSI Host Bus Adapter Serviceand User Guide is divided into several chapters, and each chapter contains in...
xv New and Changed Documentation in ThisEdition This edition includes the following changes: • Information on the auto termination feature has been modified. • Information on assigning and setting the SCSI IDs has beenmodified. • Information on the Extended Firmware Interface Flash (EFI) utilityhas ...
xvi HP Welcomes Your Comments HP welcomes any comments and suggestions you have on this manual. You can send your comments in the following ways: • Internet electronic mail: [email protected] • Using a feedback form located at the following URL: http://docs.hp.com/assistance/feedback.html ...
HP A6829A Adapter Overview Chapter 1 2 This chapter contains the following sections that describe theHP A6829A PCI Dual Channel Ultra160 SCSI host bus adapter (HBA): • “About the A6829A Adapter” on page 3. • “Features” on page 5.
HP A6829A Adapter Overview About the A6829A Adapter Chapter 1 3 About the A6829A Adapter The A6829A Dual Channel PCI Ultra160 SCSI host bus adapter ( HBA ) provides two Ultra160 SCSI-3 interfaces to PCI computer systems. When you install this adapter in your PCI system, it allowsconnection of up to ...
HP A6829A Adapter Overview Features Chapter 1 5 Features The A6829A adapter and its driver conform to the ANSI T10 SCSIParallel Interace-3 (SPI-3) standard. The A6829A adapter has the following features: • PCI interface — Full 64-bit (66 MHz) Direct Memory Access (DMA) bus master. — Zero wait-state ...
HP A6829A Adapter Overview Features Chapter 1 6 — PCI board dimensions: approximately 8.95 inches x 4.25 inches. — Universal 64-bit PCI card edge connector. — Four SCSI connectors: — Two external 68-pin Very High Density Cable Interconnect (VHDCI)—J2 and J3, one for each channel. — Two internal 68-p...
Chapter 2 9 2 Installing the A6829A Adapter This chapter contains the following sections that describe how to installthe A6829A adapter: • “Overview of Installation Steps” on page 11.
Installing the A6829A Adapter Overview of Installation Steps Chapter 2 11 Overview of Installation Steps Here is a high-level view of the steps for installing the A6829A HBA: Step 1. Review the recommendations for performance (see “PerformanceTuning” on page 13). Step 2. Ensure that you have all the...
Installing the A6829A Adapter Overview of Installation Steps Chapter 2 12 Step 9. Verify the installation (see “Verifying Installation” on page 58).
Installing the A6829A Adapter Performance Tuning Chapter 2 13 Performance Tuning To get the best performance from the A6829A adapter, we recommend the following things: • Increase the number specified for the scsi_max_qdepth kernel tunable parameter: — HP-UX 11.0: scsi_max_qdepth is a static tunable...
Installing the A6829A Adapter Preparing for Installation Chapter 2 14 Preparing for Installation Installing the A6829A adapter requires disassembly of some systemcomponents. Before beginning the installation, see the HP-UX system’smanual for detailed instructions about installing host bus adapters i...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 15 Installing the A6829A Adapter This section contains information about installing the A6829A HBA inan HP-UX system (including Online Addition and Replacement [OLAR]). WARNING The installation procedures in this section require o...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 16 NOTE As stated earlier, although the A6829A is supported on only 64-bitHP-UX 11.0 and 11i, you can install the adapter in either a 32-bit or64-bit PCI slot. Also, we recommend using a PCI4X slot, to get maximum performance. How...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 17 HP recommends that you use SAM instead of the rad command to perform OLAR procedures. This is because for the most part, SAMprevents you from performing OLAR procedures that would adverselyaffect other areas of the system. This...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 18 During an adapter replacement operation, SAM performs a Critical Resource Analysis ( CRA ), which checks all channels on the target adapter for critical resources that will be temporarily unavailable whilethe adapter is shut do...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 19 Adapter Compatibility This section explains adapter compatibility considerations forperforming OLA and OLR. Online Addition (OLA) You can add multiple adapters at the same time. While adding an adapter online, the first issue y...
Installing the A6829A Adapter Installing the A6829A Adapter Chapter 2 20 The PCI specification allows a single physical adapter to contain morethan one channel. A single channel SCSI adapter cannot be replaced by adual channel adapter, even if the additional channel(s) on the adapterare identical to...
Installing the A6829A Adapter Connecting External SCSI Peripherals Chapter 2 21 Connecting External SCSI Peripherals The A6829A adapter is capable of communicating with Low VoltageDifferential (LVD) or Single Ended (SE) SCSI devices. LVD allows up to12m cable lengths with multiple SCSI devices, or 2...
Installing the A6829A Adapter Connecting External SCSI Peripherals Chapter 2 22 Figure 2-1 below is a drawing (not to scale) of a typical SCSI shielded68-pin LVD cable. Figure 2-1 SCSI Cable for External Connections To connect external SCSI devices to the A6829A adapter, perform thefollowing steps: ...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 23 Specifying SCSI Parameters To ensure proper operation of the A6829A adapter, the following SCSIparameters that apply to the entire adapter must be configured correctly: • SCSI ID (SCSI initiator ID)—see “SCSI IDs” on page 27. • Ma...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 25 hp serverrp24 xx SCSI ID ✓ ✓ Maximumdatatransfer rate ✓ ✓ Auto termstate ✓ Bus width ✓ hp serverrp54 xx SCSI ID ✓ ✓ Maximumdatatransfer rate ✓ ✓ Auto termstate ✓ Bus width ✓ hp serverrp74 xx SCSI ID ✓ ✓ Maximumdatatransfer rate ✓ ...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 27 SCSI IDs You must assign a separate SCSI ID (0 through 15 for a 16-bit SCSI bus)to the SCSI host bus adapter (HBA) and each SCSI device. The priorityof the device on the SCSI bus is determined by the SCSI ID of the device.The orde...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 29 Maximum Data Transfer Rate The firmware suggested default for the A6829A adapter’s maximum datatransfer rate is the adapter’s maximum speed (160 MB/s). The A6829Acan communicate with all LVD or SE devices that have speeds up to 16...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 30 Setting Maximum Data Transfer Rate for A6829A Host BusAdapter Installed in PA-RISC Based System If the HP A6829A HBA is installed in a supported PA-RISC basedsystem, use the BCH menu to set the maximum data transfer rate. The step...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 31 b. At the “Information Menu,” type io (to display I/O interface information). The output is as follows:
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 32 PCI DEVICE INFORMATION Path Bus Slot Vendor Device Description (dec) # # Id Id ----------- ----- --- ------ ------ ------ ..SCSI bus cntlr 0/0/10/0/0 80 2 0x1000 0x0021 SCSI bus cntlr 0/0/10/0/1 80 2 0x1000 0x0021 .. In this examp...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 34 To ensure that the data transfer rate has changed, you can repeatstep b to display the HBA’s transfer rate. When you are satisfied that the maximum data transfer rate is setcorrectly, type main to go back to the “Main Menu.”
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 36 Shell> drvcfgConfigurable Components Drv[20] Ctrl [1A] Lang [eng] Drv[20] Ctrl [1B] Lang [eng] Drv[20] Ctrl [1D] Lang [eng] Drv[20] Ctrl [1E] Lang [eng] Drv[20] Ctrl [23] Lang [eng] Drv[21] Ctrl [22] Lang [eng] Drv[24] Ctrl [27...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 38 NOTE If you set a particular maximum data transfer rate to the SCSI controller(in this example, 53C1010-66 ), then the same maximum data transfer rate is set to all the devices. This happens because all the devices are connected t...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 39 Step 9. At the EFI shell prompt, issue the following command to reboot thesystem: reset NOTE The system reboot is required for the new setting to take effect.
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 40 Auto Termination When you configure the A6829A adapter’s auto termination parameter,you specify the adapter’s role in the SCSI bus termination, because theadapter might be a point of termination. For more information on SCSI bus t...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 41 Using the Jumper for Controlling Auto Termination The A6829A adapter has two sets of pins that control enabling anddisabling of the auto termination feature. The pins—labeled A_TERMand B_TERM—are at the end of the HBA that is oppo...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 42 The following Figure 2-2 shows the two jumper positions. Figure 2-2 Auto Termination Jumper Positions Open (Auto termination enabled) Shorted (Auto termination disabled)
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 43 Bus Width The firmware suggested default for the A6829A adapter’s bus width is MAX (use the adapter’s maximum bus width [16 bits]). However, either of these rates can be used for the A6829A: • 8 bits (Narrow) • 16 bits (Wide) TIP ...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 46 Path (dec) Initiator ID SCSI Rate Auto Term Bus Width ----------------- ------------ --------- --------- --------- 0/0/10/0/0 7 MAX ON MAX In this example, the HBA’s bus width is MAX (shown in bold in the previous listing). As men...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 47 When you are satisfied that the bus width is set correctly, type main to get back to the “Main Menu.”
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 50 Adapter Properties Adapter PCI PCI PCI Bus Device Function 53C875 60 01 01 <Device Properties> Boot Support [Enabled] SCSI Parity [Yes] Host SCSI ID [ 5] SCSI Bus Scan Order [Low to High (0..Max)] Spinup Delay (Secs) [ 2] Se...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 51 NOTE As stated earlier, HP recommends you to always use the A6829A’s maximum bus width (16 bits), unless you have Narrow (8-bit) devices onthe bus and you are experiencing problems with the connection. If you decrease the maximum ...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 52 Are you sure you want to exit? <Cancel Exit>Save changes then exit this menuDiscard changes then exit this menu<Exit the Configuration Utility> Use the arrow keys to highlight your selection from the listed choices,and...
Installing the A6829A Adapter Specifying SCSI Parameters Chapter 2 53 Setting SCSI Parameters to Default Values You can set the SCSI parameters, except Auto Termination, for theadapter to their default values through the BCH menus. The steps youfollow depend on the type of HP-UX system in which the ...
Installing the A6829A Adapter Installing the SCSI Driver Chapter 2 54 Installing the SCSI Driver On most of the supported HP-UX PA-RISC systems, the SCSI c720 driver is used with some of the SCSI interfaces. This driver isautomatically installed as part of the HP-UX 11.0 core OS and theHP-UX 11i bas...
Installing the A6829A Adapter Configuring LUN 0 Chapter 2 56 Configuring LUN 0 For a disk array that is in a multi-host environment, the SCSI standard requires a LUN 0 in certain scenarios: • If the disk array is connected to the A6829A adapter, and you plan toboot from that array, the disk array mu...
Installing the A6829A Adapter Adding Multi-Initiator Support Chapter 2 57 Adding Multi-Initiator Support In a multi-initiator configuration, multiple SCSI host bus adapters(HBA) are connected to the same SCSI bus. Multi-initiator is supportedfor A6829A HBAs having part number A6829A-60101 or higher....
Installing the A6829A Adapter Adding Multi-Initiator Support Chapter 2 58 Multi-Initiator Support for Itanium -Based System If you need multi-initiator support for HP A6829A SCSI HBA installedin an Itanium -based system, perform the following steps: Step 1. Ensure that the part number of the HBA...
Installing the A6829A Adapter Verifying Installation Chapter 2 59 Verifying Installation After installing the adapter and the c8xx driver and attaching the peripheral devices, verify that all of the components are working byperforming the following steps: Step 1. To verify that the adapter is correc...
Installing the A6829A Adapter Verifying Installation Chapter 2 61 The second line under each disk line shows the disk’s device files ( /dev/... [shown in bold in the example above, for highlighting purposes]). TIP When the system boots after installation, the insf command creates the proper device f...
Installing the A6829A Adapter Using the EFI Flash Utility Chapter 2 62 Using the EFI Flash Utility If you are installing the A6829A SCSI HBA in an Itanium -based system, use the Extended Firmware Interface (EFI) flash utility to verifythe firmware version, or to flash and save firmware images onto...
Installing the A6829A Adapter Using the EFI Flash Utility Chapter 2 63 The EFI utility should be executed from a diskette or CD-ROM. For EFIbased systems without a floppy diskette drive, burning the EFI utilityand other firmware images onto a CD-ROM allows proper execution, butwith reduced functiona...
Installing the A6829A Adapter Using the EFI Flash Utility Chapter 2 64 5 0x1000 0x021 0x01 0x16 0x01 0x00 Am29F010 LSI Logic, Inc. SYMC1010 Ultra160 66Mhz SCSI 6 - Refresh Which chip/adapter (0 to quit)? The main window allows you to choose the SCSI chip corresponding tothe path where you want to pe...
Installing the A6829A Adapter Using the EFI Flash Utility Chapter 2 65 LSI Logic Corporation EFI 53C8xx/53C1010 FLASH Utility.EFI8XXFL-1.00.00.00 (05.05.2003)Copyright (c) 2003 LSI Logic Corporation. All rights reserved. ********************************************************************FLASH a - I...
Chapter 3 67 3 Troubleshooting The A6829A adapter is a single field-replaceable unit (FRU) and does notcontain any field-serviceable parts. Troubleshooting proceduresdescribed in this chapter are limited to verifying that the adapter isoperational and that a valid connection is established.
Troubleshooting General Procedure Chapter 3 69 General Procedure In general, follow these steps to troubleshoot the A6829A adapter: Step 1. Check the connection. Make sure the correct cable is used, connected, and operating properlyand that none of the connectors have any bent pins. If you do not fi...
Troubleshooting NVRAM SCSI Parameters Do Not Match Chapter 3 70 NVRAM SCSI Parameters Do Not Match On hp servers rp7410, rp8400, and superdome only , you might see the following message after you have installed the A6829A adapter (it wouldbe displayed at the BCH “Main Menu”): ERROR: PDH NVRAM and I/...
Troubleshooting Creating Missing Device Files Chapter 3 71 Creating Missing Device Files When the system boots after installation, the insf command creates the proper device files for the “ctl” interfaces (which are usually adapters)and the SCSI devices attached to the A6829A adapter. Sometimes,thou...
Troubleshooting If the A6829A Adapter is Not Claimed Chapter 3 72 If the A6829A Adapter is Not Claimed If the A6829A adapter is not claimed (it shows as “UNCLAIMED” in theoutput from the ioscan command), the most likely reason is that you installed the c8xx driver but did not install the required pa...
Troubleshooting If the A6829A Adapter is Not Claimed Chapter 3 73 If the driver is not in the kernel, go to step 3. Step 3. Load the c8xx driver into the kernel, through SAM: a. Select the “Kernel Configuration” icon. b. Select the “Drivers” icon. c. In the “Kernel Configuration” screen, follow the ...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 74 Setting and Confirming SCSI Parameters You can ensure compatibility between the SCSI controller and SCSIdevices using the commands available for setting and displaying theappropriate SCSI bus parameters, including SCSI IDs. The proc...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 75 Setting and Confirming SCSI Parameters for HPA6829A Host Bus Adapters Installed in PA-RISC BasedSystems If the HP A6829A SCSI host bus adapter is installed in a supportedPA-RISC based system, use the SCSI command to display and sele...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 76 The SCSI Command The SCSI command can be used to display and set SCSI bus parameters to ensure that the SCSI adapter is compatible with the SCSI devices. Displaying Transfer Rates To display the SCSI transfer rate for an adapter usi...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 77 Setting Transfer Rates To set the SCSI transfer rate for an adapter using the SCSI command, use the following syntax: SCSI rate bus_number slot_number rate where bus_number Specifies the number of the bus on which the adapter isinst...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 80 Setting and Confirming SCSI Parameters for HPA6829A Host Bus Adapter Installed inItanium -Based Systems If the HP A6829A SCSI host bus adapter (HBA) is installed in asupported Itanium -based system, use the following procedure t...
Troubleshooting Setting and Confirming SCSI Parameters Chapter 3 82 LSI Logic Host Bus AdaptersAdapter PCI PCI PCI IRQ NVM LSI Logic Bus Device Function Control <53C875 60 01 01> 0 Yes Enabled Press the [Enter] key. This displays the Adapter Properties screencontaining the controller (HBA) set...
Troubleshooting Domain Validation Chapter 3 84 Domain Validation Domain Validation provides a way to automatically detect, and ifnecessary, compensate for hardware that is not performing to theoptimal level. It does this by reducing the data transfer rate and buswidth. This allows you to have data i...
Troubleshooting Domain Validation Chapter 3 85 • Path width errors (for example, a Narrow cable used with a WideSCSI device) • Damaged or marginal transceivers • Excessive cross talk • Excessive system noise When Domain Validation determines that communication with thetarget device is not possible a...
Troubleshooting Domain Validation Chapter 3 86 NOTE The number of entries in Table 3-1 above is subject to change. We areproviding it here to give you an example of how the fallback procedureworks. As mentioned earlier, Domain Validation tests are run on all targets onthe SCSI bus, even those target...
Troubleshooting Using Support Tools Manager (STM) Chapter 3 89 Using Support Tools Manager (STM) STM is a software application that can be run from the console to obtainstatus and descriptive information about the A6829A adapter, diagnoseproblems, and update firmware. For the A6829A adapter, you mus...
Troubleshooting Contacting Your Hewlett-Packard Representative Chapter 3 90 Contacting Your Hewlett-PackardRepresentative If the equipment is covered by an HP service contract, document theproblem as a service request and forward it to your HP representative.Include the following information where a...
Troubleshooting Contacting Your Hewlett-Packard Representative Chapter 3 91 • If the directory /var/adm/crash exists, the HP-UX utility /sbin/savecore automatically executes during reboot to save the memory dump. HP recommends that you create the /tmp/syscore directory after successfully installing ...
Appendix A 93 A SCSI Sense Codes This appendix shows the possible codes that appear in SCSI errormessages.
SCSI Sense Codes Appendix A 94 The following example shows a typical SCSI error message: [+6708 72410001 002a9858 0:7] scsi disk: CHECK CONDITION on disk 0:6:5:0 Read of logical block 509856, count 128disk sd45a, block 254920, 65536 bytesValid = 1, Error code = 0x70Segment number = 0x00, Filemark = ...
SCSI Sense Codes Appendix A 105 0x3f 0x00 Target operation conditions havechanged 0x01 Microcode has been changed 0x02 Changed operating definition 0x03 Inquiry data has changed 0x40 0x00 RAM failure nn Diagnostic failure on component nn 0x41 0x00 Data path failure 0x42 0x00 Power-on or self-test fa...
Appendix B 109 B Technical Specifications This chapter contains the following sections that contain the technicalspecifications for the A6829A adapter: • “Physical Attributes” on page 111.
Technical Specifications Appendix B 110 • “Environmental” on page 112.
Technical Specifications Physical Attributes Appendix B 111 Physical Attributes The physical attributes of the A6829A adapter are as follows: • Length: 8.95 inches (22.7 cm) • Height: 4.25 inches (10.7 cm) • Width: 0.721 inches (1.8 cm) • Weight: 0.44 pounds (0.1 kg)
Technical Specifications Environmental Appendix B 112 Environmental The environmental specifications for the A6829A adapter are as follows: • Non-operating temperature range: -40 degrees to +70 degrees C • Operating temperature range: 0 to 45 degrees C • Recommended operating temperature range: 25 d...
Appendix C 113 C Regulatory Information This appendix contains all of the regulatory-related information for theA6829A adapter.
Regulatory Information Regulatory Statements Appendix C 114 Regulatory Statements This section contains all of the regulatory statements for the A6829Aadapter. FCC Statement (For U.S.A. Only) The Federal Communications Commission (in 47 CFR 15.105) hasspecified that the following notice be brought t...
Regulatory Information Regulatory Statements Appendix C 115 Spécification ATI Classe A (France) DECLARATION D’INSTALLATION ET DE MISE EN EXPLOITATIONd’un matériel de traitement de l’information (ATI), classé A en fonctiondes niveaux de perturbations radioélectriques émis, définis dans lanorme europé...
Regulatory Information Regulatory Statements Appendix C 116 Declaration of Conformity
Glossary 117 Glossary A address A specific location in memory, designated either numerically or by asymbolic name. asynchronous data transfer One of the ways data is transferred over the SCSI bus.It is slower than synchronous data transfer. B bit A binary digit. The smallest unit of information a co...
Glossary DMA bus master Glossary 118 DMA bus master A feature that allows a peripheral to control the flow of data to andfrom system memory by blocks, as opposedto PIO (Programmed I/O), where the flow isbyte by byte. Domain Validation A software procedure in which a host system queries a device tode...
Glossary port address Glossary 120 port address Also port number . The address through which commands are sentto a host bus adapter. This address isassigned by the PCI bus. port number See port address . Processor Dependent Code (PDC) The system firmware on HP PA-RISC systems. Itprovides basic read/...
Glossary Wide Ultra2 SCSI Glossary 121 small computer system interface(SCSI) A specification for a high-performance peripheral bus andcommand set. The original standard is nowreferred to as SCSI-1. synchronous data transfer One of the ways data is transferred over the SCSI bus.Transfers are clocked ...
123 Index A actual data transfer rate , 29 adapter attached devices, determining device files for, in ioscan output , 60 auto termination state configurations, summary of , 39 bus type, determining in ioscan output , 59 bus width , 42 determining in BCH menus , 44 determining in ioscan output , 59 s...
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