HP A4800A manual Fast Scsi Fast Wide

Page 26

Installing the A4800A Adapter

Connecting SCSI Peripheral Devices

You can connect up to four devices if they are evenly spaced on a 3 m Ultra SCSI cable (0.75 m between devices). The single-ended SCSI bus must not exceed 3 m (total internal and external cable lengths) even with fewer than four devices.

Table 2-4 below shows the maximum bus length for each of the SCSI types.

Table 2-4

Maximum SCSI Bus Lengths

 

 

 

 

 

 

 

 

 

 

 

Maximum Bus Length (in Meters)(1)

 

 

 

 

 

 

 

Maximum

 

Type

 

 

Low

High

 

Single-ende

 

Voltage

Voltage

Devices

 

 

 

 

 

d (SE)

 

Differentia

Differentia

 

 

 

 

 

l (LVD)

l (HVD)

 

 

 

 

 

 

 

 

 

SCSI-1

6

 

12.5

25

8

 

 

 

 

 

 

 

 

Fast SCSI

3

 

12.5

25

8

 

 

 

 

 

 

 

 

Fast Wide

3

 

12.5

25

16

 

SCSI

 

 

 

 

 

 

 

 

 

 

 

 

 

Ultra SCSI

1.5

 

12.5

25

8

 

 

 

 

 

 

 

 

Ultra SCSI

3

 

-

-

4

 

 

 

 

 

 

 

 

Wide Ultra

-

 

12.5

25

16

 

SCSI

 

 

 

 

 

 

 

 

 

 

 

 

 

Wide Ultra

1.5

 

-

-

8

 

SCSI

 

 

 

 

 

 

 

 

 

 

 

 

 

Wide Ultra

3

 

-

-

4

 

SCSI

 

 

 

 

 

 

 

 

 

 

 

 

 

Ultra2 SCSI

(2)

 

12.5

(2)

8

 

 

 

 

 

 

 

 

Wide Ultra2

(2)

 

12.5

(2)

16

 

SCSI

 

 

 

 

 

 

 

 

 

 

 

 

26

Chapter 2

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Contents HP A4800A PCI FWD Scsi Host Bus Adapter Manufacturing Part Number A3725-96031 E0201Legal Notices Page Page HP A4800A Adapter Overview HP A4800A Adapter Overview About the A4800A Adapter Below is a drawing of the A4800A adapter A4800A PCI Ultra HVD Scsi Host Bus AdapterFeatures Supported HP 9000 Servers A5068A Scsi Cable Kit Description Part Number Cables for Connecting External Scsi Devices to the A4800ACable Specifications Adapter in V-Class Systems Description Product Option Number Installing the A4800A Adapter Installing the A4800A Adapter Preparing for Installation Connecting to External Scsi Devices Handling the A4800A Adapter Looking at Adapter Installation Important Terms and ConceptsImportant Terms Meaning OlarPlanning and Preparation Card Compatibility OLA/R Restrictions for the A4800A A4800-60001 Default Scsi Attribute ValuesAttribute Default Value Step Looking at Adapter Installation Reassemble the server Connecting Scsi Peripheral Devices Scsi12.5 Fast Scsi Fast Wide Connecting Scsi Peripheral Devices Terminating the A4800A Adapter Setting Scsi IDs Record of Scsi IDs Scsi DeviceVerifying 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 MPE/iX Table A-1 Scsi Status Codes Status Meaning CodeTable A-2 Scsi Sense Keys Sense Meaning KeyTable A-3 Scsi Additional Sense Code/Qualifier Code Pairs Addition Qualifier Meaning Al Sense CodeLogical unit not ready, cause not ID crc or ecc error 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 Regulatory Statements FCC Statement For U.S.A. OnlyVcci Statement Japan Declaration of Conformity
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