HP A5150A manual Bus Termination, Auto Termination PDC Versions, HP 9000 System PDC Version

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Installing the A5150A Adapter

SCSI Bus Termination

Table 2-3

Auto Termination PDC Versions

 

 

 

 

HP 9000 System

PDC Version

 

 

 

 

A400 and A500

40.20 or later

 

 

 

 

L-Class

39.40 or later

 

 

 

 

N-Class

39.41 or later

 

 

 

The A5150A is supported on the A400, A500, L-Class, and N-Class

HP 9000 systems.

Bus Termination

The SCSI bus must be properly terminated. The first and last physical SCSI devices on the ends of the SCSI bus must be terminated either by physical terminators or auto termination. The terminators of all other SCSI devices on the bus must be removed or disabled. Note that the A5150A HBA is also on the bus. However, because the A5150A HBA contains an automatic termination feature, external terminators on the HBA are not usually required. (Terminators are not shipped with the A5150A; you can order them separately, if needed.) The A5150A provides automatic termination when a SCSI cable from a powered SCSI device (a peripheral or other HBA) is connected to either the internal or external connector of the A5150A. Some exceptions where external terminators are required are described in “When and How to Turn Off Auto Termination” on page 31.

The older A5150A HBA (A5150-60001) has two sets of pins that control enabling and disabling (defeating) the auto termination feature. The pins—labeled A_TERM and B_TERM—are at the end of the HBA that is opposite the bulkhead connectors. A_TERM controls the auto termination feature for channel A, and B_TERM controls the feature for channel B.

NOTE

The A5150A’s auto termination feature cannot be set independently for

 

the internal and external connectors of the HBA.

 

 

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Contents Edition Manufacturing Part Number A5150-96002 E0201Legal Notices Page Page Contents Glossary HP A5150A Adapter Overview HP A5150A Adapter Overview About the A5150A Adapter A5150A PCI Ultra2 Scsi Host Bus AdapterFeatures Interface Descriptions PCI InterfaceScsi Interface Wide Ultra2 Scsi Interface Supported HP 9000 and HP e3000 Servers A5150A Supported HP 9000 and HP e3000 ServersCables for Connecting External Scsi Devices to the A5150A Cable SpecificationsAdapter Description Product Option Number Installing the A5150A Adapter Installing the A5150A Adapter Preparing for Installation Handling the A5150A Adapter Looking at Adapter Installation Before You StartInstall Using Olar HP-UX Important Terms and ConceptsImportant Terms Meaning OlarPlanning and Preparation Card CompatibilityLooking at Adapter Installation A5150-60001 Default Scsi Attribute Values Attribute Default ValueOLA/R Restrictions for the A5150A Install/Replace With System Powered Down Step Connecting the Scsi Peripherals Making External Scsi Bus ConnectionsScsi Cable Making Internal Scsi Bus Connections Scsi Bus Termination Auto Termination InformationBus Termination Auto Termination PDC VersionsHP 9000 System PDC Version When and How to Turn Off Auto Termination When To Turn Off Auto TerminationScsi Bus Termination How to Turn Off Auto Termination PCI Device Information Setting Scsi IDs Scsi term 0/2/0/0 onRecord of Scsi IDs Scsi Device Channel a Scsi Device Channel BVerifying Installation Verifying Installation HP e3000 Troubleshooting Troubleshooting General Procedure Checking Scsi Bus Compatibility ClearpimScsi Command Displaying Transfer RatesSetting Transfer Rates Displaying Scsi IDs Setting Scsi IDs Using Support Tools Manager STM Contacting Your Hewlett-Packard Representative Contacting Your Hewlett-Packard Representative Contacting Your Hewlett-Packard Representative Chapter Scsi Sense Codes Scsi Sense Codes Table A-1 Scsi Status Codes Status CodeTable A-2 Scsi Sense Keys Sense KeyTable A-3 Scsi Additional Sense Code/Qualifier Code Pairs Addition Qualifier Al Sense CodeLogical unit not ready, cause not Meaning Addition Qualifier Al Sense Code Recorded entity not found Recovered data with error correction Applied Logical block address out of range Commands cleared by another initiator Sequential positioning error Target operation conditions have Changed Write append error Log exception 0x69 0x00 Regulatory Information IEC Statement Worldwide Regulatory StatementsFCC Statement For U.S.A. Only DOC Statement CanadaSpécification ATI Classe a France Vcci Statement JapanDeclaration of Conformity Glossary Asynchronous Data TransferCPU central processing unit Nvram For each Scsi host adapter RAM Random Access ROM Read-Only Memory

A5150A specifications

The HP A5150A is a notable addition to HP's extensive line of desktop computers, designed to cater to both home and office users looking for a balance of performance and value. This model is characterized by its robust build and a range of features that enhance versatility and usability.

One of the standout features of the HP A5150A is its processor options. It typically comes equipped with a dual-core AMD Athlon processor, which provides ample power for everyday tasks such as web browsing, document editing, and multimedia playback. For users needing a little more performance, the system supports upgrades, allowing for future enhancements as demands change.

In terms of memory, the A5150A generally includes 1GB of DDR2 RAM, with options to expand depending on user needs. This flexibility ensures that users can manage multiple applications simultaneously without experiencing significant slowdowns, making it suitable for light multitasking.

Storage is another critical characteristic of the A5150A. The desktop commonly features a 160GB hard drive, offering enough space for essential files, programs, and media. However, users can benefit from additional storage options, as the unit typically supports multiple hard drive configurations, allowing for increased capacity or redundancy with RAID setups.

Graphics capabilities are addressed by an integrated ATI Radeon graphics processor, enabling decent performance for casual gaming and media playback. While it may not meet the demands of high-end gaming, the graphics hardware is sufficient for most users' everyday needs.

Connectivity features on the HP A5150A are comprehensive. It often includes multiple USB 2.0 ports for peripherals, audio jacks for headphones and microphones, and Ethernet connectivity for network access. Furthermore, connectivity options like VGA outputs provide compatibility with a variety of displays, enhancing the desktop's functionality.

The HP A5150A also places an emphasis on ease of use and manageability. With HP's user-friendly design, tasks such as upgrading components or performing maintenance can generally be completed without extensive technical knowledge. This focus on user accessibility is a significant advantage, especially for small business environments.

In summary, the HP A5150A stands out for its reliable performance, versatility, and user-friendly design. With features catering to both casual users and business applications, this desktop remains a solid choice for those in search of value without compromising essential functionalities. Its upgrade potential ensures that it can evolve alongside user needs, making it a lasting investment in the realm of personal computing.
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