AHA-2930B Installation Guide
Part Number: 511227-00, Rev. B Page 16 of 16
Print Spec Number: 495645-00
Current Date: 3/18/97
Last Modified: March 18, 1997 8:24 am
File Location: D:\MARIO\2930B_b-ig\2930b.fm
ECN Date: 3/24/97
Introduction
Contents
The AHA
®
-2930B host adapter provides a powerful multitasking interface between your computer’s PCI bus and SCSI devices (disk drives, CD-ROM drives, scanners, tape drives, removable-media drives, etc.). You can connect up to seven 8-bit SCSI devices to your host adapter. The following figure shows the major components of the
AHA-2930B host adapter.
J1
J2
Installation
Installing the Host Adapter . . . . . 2
Installing Internal SCSI Devices . 3
Installing External SCSI Devices . 4
Installing Software for the PC . . . 5
Installing Software for the
Macintosh . . . . . . . . . . . . . . . . . . 5
J3
J4
Label
J1
J2
J3
J4
Description
50-pin 8-bit internal SCSI connector
External LED connector
50-pin 8-bit high-density external SCSI connector
PC/Mac auto detection jumper (ON for Macintosh; OFF for PC/
AUTOMATIC )
Helpful Hints
Configuring SCSI Devices . . . . . . 6
Configuring Disk Drives . . . . . . . 6
Installing Multiple Adapters . . . . 6
Using Board Control (Macintosh) 7
Using SCSISelect (PC) . . . . . . . . . 8
Troubleshooting Checklist . . . . . 11
Common Problems and
Solutions . . . . . . . . . . . . . . . . . . 12
1
2
Installation
Installing the Host Adapter
WARNING:
Before beginning the installation,
Step 6:
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.)
If you are installing external SCSI devices only, replace the computer chassis cover and skip to Installing External
SCSI Devices on page 4.
Installing Internal SCSI Devices
Step 1:
Install or enable terminators on the internal
SCSI device that you plan to connect to the end of the internal cable. Then remove or disable terminators on all other internal devices.
On most internal SCSI devices, you control termination by setting a jumper or a switch, or by physically removing or installing a resistor module(s). Refer to the device’s documentation to determine how to enable or disable termination on your particular device.
Pin-1 of the connector is usually designated by a small triangle (
▲
), or a “1” on the connector.
Colored
Stripe
50-pin SCSI
Ribbon Cable
Pin 1
Internal SCSI
Connector
Step 4:
Plug the other end of the 50-pin internal SCSI cable into one of the connectors 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.
Pin 1
Colored Stripe
Termination
Enabled
Termination
Disabled
Step 2:
Install and mount each internal SCSI device inside your computer. (Refer to your computer and device documentation for instructions.)
If you purchased your AHA-2930B 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 3:
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.
Make sure that the colored stripe on one side of the cable is aligned with pin-1 of the host adapter’s connector.
Internal SCSI
Device
Step 5:
Plug the remaining cable connectors into any remaining internal devices. (These devices must not be terminated.)
3
Step 6:
Connect a DC power cable from your computer’s power supply to the power connector on the
SCSI device.
Power Input Connector on the Back of the Drive
DC Power Cable
(from the Power Supply)
Step 7:
Replace the computer chassis cover.
Installing External SCSI Devices
Step 1:
Plug one end of a 50-pin high-density external
SCSI cable into the host adapter’s external SCSI connector. Plug the other end of the external SCSI cable into one of the connectors on the external SCSI device. If you are installing only one external device, enable the device termination or attach a terminating plug to the device.
Step 3:
Reconnect the power cables to the computer and external SCSI devices. Then turn ON the power to the external devices and the computer.
If you plan to boot your computer from a SCSI device attached to the host adapter such as a hard disk drive, run the SCSISelect utility, as described in Using
SCSISelect (PC) on page 8, and set the Boot Target ID to correspond to the SCSI ID of the boot device.
Step 2:
To connect additional external SCSI devices, daisy-chain each device to the previous device until all devices are connected to each other. (The device at the end of the chain must have a terminating plug or have the on-board terminator enabled.) You need a 50-pin high-density external SCSI cable to connect external devices to the host adapter.
4
Installing Software for the PC
Under MS-DOS 5.0 and above, the AHA-2930B host adapter can support up to seven other SCSI devices without additional software. (Earlier versions of DOS support up to two hard disk drives.) You need to install additional software to support other kinds of SCSI devices such as tape drives, CD-ROM drives, and scanners.
■
■
If Adaptec EZ-SCSI
®
was included with your
AHA-2930B, you should install it now. Adaptec
EZ-SCSI provides software driver support for your host adapter and SCSI devices in computers running under DOS, Windows
®
, Windows 95
®
, and
Windows NT
™
.
The Adaptec
®
7800 Family Manager Set provides software driver support for the NetWare, OS/2, and
UNIX platforms.
■
If you purchased your host adapter from a thirdparty vendor, you can use the drivers they provide.
(Refer to the third-party documentation for installation instructions and troubleshooting information.)
Installing Software for the
Macintosh
Power Macintosh users with Mac OS (system 7.5.2 or greater) can install the Board Control software that allows you to change host adapter settings without opening the computer case. This software is included on the Board
Control diskette. Copy the Board Control software to the
System folder/Apple Menu Items folder on your local hard disk drive. See Using Board Control (Macintosh) on page 7.
Congratulations!
You have completed the installation of your host adapter. For additional information on configuring your host adapter, see Helpful Hints on page 6.
5
6
Helpful Hints
This section contains useful information on configuring and using your host adapter.
Configuring SCSI Devices
Your host adapter can transfer data on the SCSI bus at a maximum negotiated transfer rate of 10 MBytes/sec. For reliable data transfers, the following requirements should be met:
■
Internal and external cables should be terminated with active terminators, either provided by the SCSI device at the end of the cable or by a separate terminating plug. The terminator on the AHA-2930B is an active terminator.
■
For all SCSI devices connected to the host adapter, make sure you use high-quality SCSI cables to ensure reliable data transfer. Select cables labeled “SCSI II” to ensure cable compliance to the SCSI specification.
Note that cables with a 25-pin DB25 connector may
not meet SCSI II standards. However, if you must use this cable, restrict the external cabling to a minimum length (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
(internal and external) should not exceed 3 meters
(9.8 feet) to ensure reliable operation when transferring data at 10 MBytes/sec.
■
Your host adapter can support the SCSI Configured
AutoMatically (SCAM) protocol, which automatically assigns SCSI IDs dynamically and resolves SCSI
ID conflicts at bootup. To enable or disable SCAM support, see Additional Options: Boot Device Options on page 10.
If your system includes SCSI disk drives or other devices that support SCAM and SCAM is enabled, you do not need to manually assign SCSI IDs to these devices. Most SCSI devices currently in use, however, do not support SCAM, and you must set their SCSI
IDs manually.
■
■
■
Configuring Disk Drives
Every hard disk must be low-level formatted, partitioned, and logically formatted before you can use it to store data. Most SCSI hard disks are physically formatted at the factory and do not need to be formatted again.
If you connected a new hard disk drive to your host adapter, you must partition and logically format the drive. For DOS and Windows (3.x and 95) use the
DOS Fdisk and Format commands (see your computer and DOS documentation). For other operating systems, see your operating system documentation.
If you are booting from a SCSI hard disk drive, make sure the Hard Disk (or Drives) setting in your computer’s CMOS setup program is set to None or
No Drives Installed, as required for SCSI hard disk drives. (See your computer documentation.)
If the motherboard has an embedded SCSI controller, disable the embedded controller after you install the
AHA-2930B.
If you installed both SCSI and non-SCSI (e.g., IDE) disk drives, the non-SCSI disk drive is always the boot device
■
■
■
Installing Multiple Adapters
You can install multiple SCSI host adapters if unused
I/O ports and BIOS addresses are available.
Each host adapter you install forms a separate SCSI bus with a different set of SCSI devices.
SCSI IDs can be reused as long as the ID is assigned to a device on a different host adapter (for example, each host adapter can have a device with SCSI ID 0).
If you have two or more SCSI host adapters, enable the BIOS only on the host adapter you have selected as a boot device. Disable the BIOS on the other host adapter(s).
Using Board Control (Macintosh)
The Board Control utility allows you to change host adapter settings without opening the computer case when using the AHA-2930B in a Macintosh.
Starting the Board Control Utility
To start the Board Control utility, select Board Control from the Apple Menu Items folder. The Board Control main dialog box appears.
Using Menu Options
Board Control uses menus to list selectable options. To select an option, use the
↑ and
↓
keys to move the cursor to the option, then press Enter.
Exiting Board Control
To exit Board Control, select Close from the File menu.
Using the Board Control Utilities
The Board Control default settings are appropriate for most PCI systems (see the table of settings below). Run
Board Control only to change default settings.
SCSI Bus Interface Definitions
Select a SCSI bus
Select Initiator ID
Parity Options
Termination Options
Additional Options
Select a SCSI ID
Synchronous Transfer Rate
SCSI Disconnection
Default Value
Host Adapter ID
7
Parity on
Automatic
Default Value
SCSI ID 0
10 MBytes/sec
Yes
Definitions of Board Control Settings
This section defines the AHA-2930B default settings.
After you change a setting, press Set. To revert to a previous setting, press Revert.
SCSI Bus Interface Definitions
The following settings are most likely to require modification.
■
Select a SCSI Bus
—The SCSI Bus window displays the host adapters connected the SCSI bus. This option allows you to select an adapter to configure.
■
■
■
Select Initiator
—This option sets the Initiator ID of the host adapter. To give the host adapter the highest priority on the SCSI bus, we recommend that you do not change the default setting of Initiator ID 7.
Parity Options
—This option determines whether the host adapter verifies the accuracy of data transferred on the SCSI bus. The default setting is Parity on. If any
SCSI device connected to the host adapter does not support parity, turn off Parity Options on the host adapter and all SCSI devices. To determine if a device supports parity, read the device documentation.
Termination Options
—This option sets the host adapter termination. You can set it to Automatic,
Enabled, or Disabled. We recommend that you leave this option at its default setting of Automatic. When set to Automatic, the host adapter does the following:
– If the host adapter detects that cables are connected to either its internal or external SCSI connector, it enables its terminators (the host adapter is at the end of the SCSI bus).
– If the host adapter detects that a cable is connected to both its internal and external SCSI connector, it disables its terminators (the host adapter lies between the ends of the SCSI bus).
Additional Options
Board Control lets you change the synchronous transfer rate and SCSI disconnection for a device. To use these options, select Target Options from the Special menu.
■
■
Select a SCSI ID
—The Select a SCSI ID window displays all devices connected to the AHA-2930B. You must first select a SCSI ID before you can change the
Synchronous Transfer Rate or SCSI Disconnection settings. After you change a setting, press Set. When you are finished changing settings, press Done. To revert to the previous settings, press Revert.
Synchronous Transfer Rate
—This option sets the synchronous data transfer rate supported by the host adapter. The host adapter supports rates up to 10.0
MBytes/second.
■
SCSI Disconnection
—This option lets a SCSI device temporarily disconnect from the SCSI bus and allows the host adapter to perform other operations while the SCSI device is disconnected. The default setting is
enable. Leave SCSI Disconnection set to enable if two or more SCSI devices are connected to the host adapter.
7
Using SCSISelect (PC)
The SCSISelect configuration utility allows you to change host adapter settings without opening the computer case when using the AHA-2930B in a PC. SCSISelect also has SCSI disk utilities that allow you to perform a low-level format or to verify the disk media of your SCSI hard disk drives.
Starting the SCSISelect Utility
If the host adapter BIOS is enabled, you can start
SCSISelect by pressing Ctrl-A when the following prompt appears briefly at boot time:
Press <Ctrl><A> for SCSISelect (TM) Utility!
The first menu that appears displays two options:
Configure/View Host Adapter Settings and SCSI Disk
Utilities.
Using SCSISelect Menus
SCSISelect uses menus to list selectable options. To select an option, use the
↑ and
↓
keys to move the cursor to the option, then press Enter.
When you select an option, another menu may appear.
Return to the previous menu at any time by pressing Esc.
To restore the original SCSISelect default values, press
F6
. To toggle the display between color and monochrome modes, press F5 (this feature may not work on some monitors).
Exiting SCSISelect
To exit SCSISelect, press Esc until a message prompts you to exit (if you changed any host adapter settings, you are prompted to save the changes before you exit).
At the prompt, select Yes to exit, then press any key to reboot the computer. Any changes you made in
SCSISelect take effect after the computer boots.
Using the SCSI Disk Utilities
To access the SCSI disk utilities, select the SCSI Disk
Utilities
option from the menu that appears when you start SCSISelect.
Once the option is selected, SCSISelect immediately scans the SCSI bus and displays a list of all SCSI IDs and the devices assigned to each ID. When you select a specific
ID and device, a menu appears, displaying the Format
Disk and Verify Disk Media options.
8
■
Format Disk
—This utility allows you to perform a low-level format on a hard disk drive. Most SCSI disk devices are preformatted at the factory and do not need to be formatted again.
The Adaptec Format Disk utility is compatible with the vast majority of SCSI disk drives.
Caution:
A low-level format destroys all data on the drive. Be sure to back up your data before performing this operation. You cannot abort a low-level format once it is started.
■
■
Verify Disk Media
—This utility allows you to scan the media of a hard disk drive for defects. If the utility finds bad blocks on the media, it prompts you to reassign them. If you select yes, those blocks are no longer used. You can press Esc at any time to abort the utility
Default Settings
—The AHA-2930B has default settings appropriate for most PCI systems (see the table below). Run SCSISelect only to change these settings.
SCSI Bus Interface Definitions
Host Adapter SCSI ID
SCSI Parity Checking
Host Adapter SCSI Termination
Additional Options: SCSI Device Configuration
Initiate Sync Negotiation
Maximum Sync Transfer Rate
Enable Disconnection
Default Value
7
Enabled
Automatic
Default Value
Yes
10 MBytes/sec
Yes
Send Start Unit Command
BIOS Multiple LUN Support
Additional Options: Boot Device Options
Boot SCSI ID
No
No
Default Value
0
Boot LUN Number 0
Additional Options: Advanced Configuration Options Default Value
Plug and Play SCAM Support
Host Adapter BIOS
Disabled
Enabled
Support Removable Disks under BIOS as Fixed Disks
Extended BIOS Translation for DOS Drives > 1 GByte
Display <Ctrl><A> Message During BIOS Initialization
BIOS Support for Bootable CD-ROM
BIOS Support for Int 13 Extensions
Boot Only
Enabled
Enabled
Disabled
Enabled
Definitions of SCSISelect Settings
This section defines the default settings for the host adapter.
Settings for Host Adapter and All SCSI Devices
The following settings are most likely to require modification.
■
Host Adapter SCSI ID
— This option sets the SCSI ID of the host adapter.
■
To give the host adapter the highest priority on the
SCSI bus, we recommend that you leave the host adapter at its default setting of SCSI ID 7.
SCSI Parity Checking
—This option determines whether the host adapter verifies the accuracy of data transferred on the SCSI bus. The default setting is
Enabled.
■
If any SCSI device connected to the host adapter does
not support SCSI parity, disable SCSI Parity Checking on the host adapter and all SCSI devices. To determine if a device supports SCSI parity, read the device documentation.
Host Adapter SCSI Termination
—This option sets termination on the host adapter. You can set it to
Automatic, Enabled, or Disabled. We recommend that you leave this option set to its default setting of Auto-
matic. When set to Automatic, the host adapter does the following:
– If the host adapter detects that cables are connected to either its internal or external SCSI connector, it enables its terminators (the host adapter is at the end of the SCSI bus).
– If the host adapter detects that a cable is connected to both its internal and external SCSI connectors, it disables its terminators (the host adapter lies between the ends of the SCSI bus).
Additional Options: SCSI Device Configuration
SCSI device 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 8.
■
Initiate Sync Negotiation
— This option determines whether synchronous data transfer negotiation between the host adapter and a device is initiated by the host adapter.
The default setting is Yes (Enabled). Set Initiate Sync
Negotiation to No for devices that do not support
Sync Negotiation.
■
■
■
■
Maximum Sync Transfer Rate
— This option sets the maximum synchronous data transfer rate that the host adapter supports. The host adapter supports transfer rates of up to 10.0 MBytes/sec. If Initiate
Sync Negotiation is set to No, then the maximum synchronous transfer rate is the maximum rate that the host adapter accepts from the device during negotiation.
Enable Disconnection
— This option lets a SCSI device temporarily disconnect from the SCSI bus.
This allows the host adapter to perform other operations while the SCSI device is disconnected. The default setting is Yes. Set Enable Disconnection to Yes if two or more SCSI devices are connected to the host adapter.
Send Start Unit Command
— This option determines whether the Start Unit SCSI Command is sent to the device at bootup (most devices do not require this). The default setting is No.
BIOS Multiple LUN Support
—This option determines whether booting from a SCSI device that has multiple LUNs is supported. The default setting is No
(Disabled). Enable this option if your boot device has multiple LUNs.
9
Additional Options: Boot Device Options
Boot device options allow you to specify the device from which to boot your computer.
■
Boot SCSI ID
—This option specifies the SCSI ID of the boot device and must correspond to the ID of the boot device. The default setting is SCSI ID 0.
■
Boot LUN Number
—This option allows you to specify which LUN to boot from on your boot device if the device has multiple LUNs (Logical Unit Numbers) and Multiple LUN Support is enabled. The default setting is LUN 0.
Additional Options: Advanced Configuration Options
Do not change the advanced configuration options unless absolutely necessary.
■
Plug and Play SCAM Support
— This option allows the host adapter to automatically assign SCSI IDs to
SCSI devices that support the SCAM protocol. The default setting is Disabled. Most non-SCAM devices tolerate the SCAM protocol, so you can enable this option even if you have a non-SCAM device.
■
Host Adapter BIOS
— This option enables or disables the host adapter BIOS. The default setting is
Enabled. Several SCSISelect options are not valid unless the host adapter BIOS is enabled.
Make sure that the BIOS is enabled if you want to boot from a SCSI disk drive connected to the host adapter. Disable the BIOS if device drivers control the devices on the SCSI bus and do not require BIOS functionality.
■
Support Removable Disks Under BIOS as Fixed
Disks
— This option controls which removablemedia drives are supported by the host adapter BIOS.
The default setting is Boot Only. The following choices are available:
–
Boot Only
— Only the removable-media drive designated as the boot device is treated as a hard disk drive.
–
All Disks
— All removable-media drives supported by the BIOS are treated as hard disk drives.
–
Disabled
— No removable-media drives are treated as hard disk drives. In this situation, software drivers are needed because the drives are not controlled by the BIOS.
10
Caution:
If a removable-media SCSI device is controlled by the host adapter BIOS, wait until the drive is powered
OFF
to remove the media; otherwise you may lose data! If you need to be able to remove the media while the drive is on, install a removable-media device driver and set
■
■
■
Display <Ctrl-A> Message During BIOS Initialization
— This option determines whether the Press
<Ctrl> <A> for SCSISelect (TM) Utility!
message appears on your screen during system bootup. The default setting is Enabled. If this setting is disabled, you can still start SCSISelect by pressing <Ctrl><A> after the host adapter BIOS banner appears.
BIOS Support for Bootable CD-ROM
— This option determines whether the host adapter BIOS provides support for booting from a CD-ROM drive. The default setting is Disabled.
BIOS Support for Int 13 Extensions
— This option determines whether the host adapter BIOS supports disks with more than 1024 cylinders. The default setting is Enabled.
Troubleshooting Checklist
If you have any problems during the installation, check the following items first:
■
Have you installed the host adapter in a PCI Rev 2.0 compliant computer?
■
■
Are all SCSI devices powered?
Are all SCSI bus cables and power cables properly connected? Is pin 1 oriented correctly?
■
■
■
■
■
Does the host adapter and each device on the SCSI bus have a unique SCSI ID?
Did you install your host adapter in a bus master PCI slot? Refer to your computer’s documentation for instructions or try another slot.
Are all devices on the SCSI bus terminated properly?
Does the total SCSI cable length exceed the 3-meter limit when the maximum sync transfer rate is set to
10 MBytes/sec?
Does your system CMOS setup require you to enable
PCI bus parameters? If so, refer to your computer’s documentation for instructions. Check that IRQ channel assignment, board, and BIOS settings have been made.
Some configuration options apply to a specific PCI bus slot, so if you change these options be sure you are applying them to the slot in which the host adapter is installed.
Check your computer documentation to verify which slot corresponds to which number.
– If there is an Interrupt Type or Interrupt Line option in the Setup program, be sure to select
Int-A
or Interrupt Type = A. Depending on your system design, you may also be required to change a motherboard jumper setting.
– If there is a Triggering Interrupt option, be sure to select Level.
– If there is an option to enable or disable bus mastering for the PCI slots, be sure to select Enabled.
– If there is an option to enable or disable individual PCI slots, be sure the slot in which you install the host adapter is Enabled.
11
■
– If your computer has a combination of ISA (or
EISA) boards and PCI boards, you may need to mark the IRQs used by ISA/EISA boards as Used so the system BIOS will not try to assign these
IRQs to other PCI boards.
– In some systems the BIOS reserves a set of available IRQs for PCI boards, and you have to assign these IRQs manually.
If SCAM is enabled, are your SCSI devices SCAMcapable or SCAM-tolerant? Devices that are not
SCAM-tolerant may not be detected by the BIOS.
ASPI drivers should not have any problems.
■
■
■
■
■
Common Problems and Solutions
Boot From SCSI Disk Fails
— If you are booting from a SCSI hard disk drive, make sure the Drives setting in your computer’s Setup program that corresponds to the drive is set to None or No Drives Installed, as required for SCSI hard disk drives.
Changed Values Not Loaded
— If you changed any values on the host adapter in a Setup program or on a
SCSI device, did you turn the power off and on to ensure that the new values are loaded?
Computer Will Not Boot from a SCSI Disk Drive
—
If you have a combination of SCSI and non-SCSI disk drives, then the non-SCSI disk drive is always the boot device. If the system has only SCSI disk drives, do the following:
1
Make sure the drive type in your computer’s
CMOS setup is set to No Drives Installed.
2
Make sure the boot hard disk SCSI ID corresponds to the Boot SCSI ID setting under
SCSISelect settings (see page 8). The SCSI ID is normally set with jumpers or switches on the drive.
3
If this does not solve the problem, back up all data on the SCSI hard disk and perform a low-level format with the SCSISelect Format Disk option.
See the MS-DOS documentation for instructions on partitioning the disk after formatting.
Host adapter not displayed by Board Control (Macintosh)
—If the host adapter was not installed correctly, you cannot display it using Board Control. If it is not displayed, do the following:
1
Be sure that jumper J4 is removed.
2
Make sure that the host adapter is firmly seated in the PCI slot.
3
Restart your computer and relaunch Board
Control.
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 Failure pop-up box with error information, the utility probably encountered a problem with the disk device or the media and therefore cannot run.
12
■
You can probably determine from the Sense Key information (e.g., 06h - Unit Attention) both the cause of the problem and its solution. Listed below are some of the more common Sense Key values and their meanings:
02h - Not ready—
The media is not ready to format. Be sure that media is inserted in the drive and that the media is spun up.
03h - Medium error—
The disk media may be defective. If it is a removable-media drive, try using a different disk media. If it is a hard disk drive, the disk may be physically damaged. Try verifying and formatting the drive with
SCSISelect.
04h - Hardware error— The disk drive may be defective. Consult the hardware documentation and contact the manufacturer.
06h - Unit attention— The removable media may be write-protected. Disable write protection and run the utility again.
BIOS Initialization Fails
— If the host adapter BIOS is enabled but fails to initialize, the system may display one of the following error messages followed by a
BIOS Installation Failure message.
–
Device connected, but not ready
. The host adapter received no answer when it requested data from an installed SCSI device. Run the SCSISelect utility and enable the Send Start Unit Command for the device.
If the message still appears, follow the drive manufacturer’s instructions to make sure the drive is set to spin up when the power is switched
ON
.
–
Start unit request failed.
The BIOS was unable to send a Start Unit Command to the device.
Run the SCSISelect utility and disable the Send
Start Unit Command for the device.
–
Time-out failure during…
An unexpected time-out occurred. Check the SCSI bus termination. Then disconnect the SCSI peripheral cables from the host adapter and start the computer. If the computer successfully restarts, check the SCSI bus termination and cable connections. One of the devices on the SCSI bus may be defective. Reconnect one device at a time to isolate the problem.
13
AHA-2930B Installation Guide
Part Number: 511227-00, Rev. B Page 14 of 16
Print Spec Number: 495645-00
Current Date: 3/18/97
Last Modified: March 18, 1997 8:24 am
File Location: D:\MARIO\2930B_b-ig\2930b.fm
ECN Date: 3/24/97
AHA-2930B Installation Guide
Part Number: 511227-00, Rev. B Page 15 of 16
Print Spec Number: 495645-00
Current Date: 3/18/97
Last Modified: March 18, 1997 8:24 am
File Location: D:\MARIO\2930B_b-ig\2930b.fm
ECN Date: 3/24/97
