Adaptec AHA-2910Bi Installation Manual Download Page 4

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Step 5: 

Make sure that all SCSI devices have 

unique SCSI ID’s from 0 to 6. (Refer to your device 
documentation for SCSI ID settings and instructions 
on manually changing the default settings.) 

Caution: 

AHA-2910Bi host adapters support 

only single-ended SCSI devices. Differential SCSI 
devices may be damaged if you connect them to 
the host adapter. Most SCSI devices are single-
ended. Read the device documentation.

Step 6: 

Install or enable terminators on the device 

that you plan to install at the end of the internal cable. 
Then remove or disable terminators on all remaining 
devices. However, never terminate more than two 
devices on the SCSI bus. The AHA-2910Bi detects 
installed SCSI devices on the bus and sets its own 
termination automatically.

WARNING: 

If you decide to attach your host 

adapter between two terminating SCSI devices 
on the internal SCSI connector, you must disable 
host adapter SCSI termination using the 
SCSISelect utility that comes with the 
AHA-2910Bi product. 

On most internal SCSI devices, you control termination 
by setting a jumper or a switch, or by physically remov-
ing or installing a resistor module(s). 

Refer to the device’s documentation to determine how to 
enable or disable termination on your particular device.

Step 7: 

Install and mount each internal SCSI device 

inside your computer. (Refer to your computer and 
device documentation for instructions.) 

If you purchased your AHA-2910Bi as part of an 
Adaptec kit, the kit includes one 50-pin internal SCSI 
cable that allows you to connect up to two internal SCSI 
devices. 

Step 8: 

Plug one end of your 50-pin internal SCSI 

cable into the host adapter’s internal SCSI connector. 
To connect more than two internal devices, use a 
SCSI cable with enough connectors to accommodate 
all of your devices.

Termination

Disabled

Termination

Enabled

Summary of Contents for AHA-2910Bi

Page 1: ...copying recording or otherwise without the prior written consent of Adaptec Inc 691 South Milpitas Blvd Milpitas CA 95035 Adaptec the Adaptec logo AHA EZ SCSI and SCSISelect are trademarks of Adaptec Inc which may be registered in some jurisdictions Windows and Windows 95 are registered trade marks and Windows NT is a trademark of Microsoft Corpora tion in the U S and other countries used under li...

Page 2: ...nstallation Using the SCSISelect utility Troubleshooting the installation Common problems and solutions The AHA 2910Bi host adapter provides a powerful multitasking inter face between your computer s PCI bus and internal SCSI devices disk drives CD ROM drives tape drives removable media drives etc The host adapter supports the SCAM SCSI Configured AutoMati cally protocol which automatically assign...

Page 3: ... PCI expansion slot This slot is typically white or ivory Unscrew the expansion slot bracket that covers the card slot opening The PCI slot must support 5 volt Bus Master data trans fers refer to your computer documentation or contact your vendor Step 3 Insert the host adapter in the PCI expansion slot Press it down firmly so that the contacts are securely seated in the slot and secure it with the...

Page 4: ...nternal cable Then remove or disable terminators on all remaining devices However never terminate more than two devices on the SCSI bus The AHA 2910Bi detects installed SCSI devices on the bus and sets its own termination automatically WARNING If you decide to attach your host adapter between two terminating SCSI devices on the internal SCSI connector you must disable host adapter SCSI termination...

Page 5: ...tors on the last internal SCSI device in the chain This device must be terminated Make sure the colored stripe on the side of the cable is aligned with pin 1 of the SCSI device s connector Step 10 Plug the remaining cable connectors into any remaining internal devices These devices must not be terminated Step 11 Connect a DC power cable from your computer s power supply to the power connector on t...

Page 6: ...edded driver support for the Adaptec AHA 2910Bi product How ever earlier versions of Windows NT do not have embed ded driver support so you must load the driver yourself If your AHA 2910Bi came with Adaptec EZ SCSI software v4 01 or later install the Windows NT driver from the diskette provided for your AHA 2910Bi to support previous versions of Win dows NT Refer to the Adaptec EZ SCSI documenta t...

Page 7: ...omatic termination see Host Adapter SCSI Termination on page 8 Always leave parity checking enabled to verify reliable data transfers When one or more Fast SCSI devices are connected to the host adapter the combined length of all cables must not exceed 3 meters 9 8 feet to ensure reliable operation and data transfers of up to 10 MBytes sec Your host adapter can support the SCSI Configured AutoMati...

Page 8: ...rm a low level format or verify the disk media of your SCSI hard disk drives Starting the SCSISelect Utility Use the bootable floppy diskette that is included with your AHA 2910Bi product After starting your computer and inserting the floppy diskette the first menu that appears displays the options for SCSI Configuration set tings and the SCSI Disk Utility At this time you may select either a colo...

Page 9: ...omatic Enabled or Disabled In general you should leave this option set to its default setting of Enabled SCSI Device Configuration Settings SCSI device configuration settings allow you to configure parameters for each device on the SCSI bus To configure a specific device you must identify the SCSI ID assigned to that device To determine the SCSI ID of a device see Using the SCSI Disk Utilities on ...

Page 10: ...them If you select Yes those blocks are no longer used You can press Esc at any time to abort the utility Board Control Use Board Control to configure the AHA 2910Bi for Power Macintosh PCI systems For instructions see the documentation included on the Board Control diskette Troubleshooting Checklist If you have any problems during the installation check the following items first Have you installe...

Page 11: ... the new values are loaded Format Verify Disk Device Utility Startup Fails If you tried to use the Format Verify utility on a disk device and got an Unexpected SCSI Command Fail ure pop up box with error information the utility probably encountered a problem with the disk device or the media and therefore cannot run You can probably determine from the Sense Key information e g 06h Unit attention b...

Page 12: ... the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Move the equipment away from the receiver Plug the equipment into an outlet on a circuit different from that to which the receiver is powered If necessary the user should consult the dealer or an experienced radio television technic...

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