Adaptec AHA-2742T User Manual - Page 65

enabled, Disk Drives Over 1, Gigabyte, disabled

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AHA-2740 Series User's Manual Extended Translation for Drives > 1 GByte This option allows you to enable or disable extended translation for SCSI hard disks with a capacity greater than 1 GByte. The default setting is enabled. Appendix D, Disk Drives Over 1 Gigabyte discusses the extended translation feature in detail. If this option is enabled, the following translation schemes are used: • SCSI hard disks ≤ 1 GByte use a translation scheme of 64 heads, 32 sectors per track • SCSI hard disks > 1 GByte use a translation scheme of 255 heads, 63 sectors per track Note Enabling this option for operating systems that do not need extended translation (e.g., NetWare® 386 and UNIX®) can cause drive failure and/or data loss) Support More than Two Drives This option allows you to enable or disable BIOS support for more than two SCSI hard disks (supported by DOS 5.0 and above). The default setting is disabled. SCSI Device Configuration SCSI Device Configuration allows you to customize the configuration of each SCSI device connected on the SCSI bus. When this option is selected, a screen similar to Figure 3-13 is displayed. All SCSI IDs are displayed on the screen even if no SCSI device is attached; however, to configure a specific SCSI device, you will need to know which SCSI ID corresponds to that SCSI device. Use the cursor keys to move between options. To toggle values for each option, press the Enter key. 3-14 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 3-14) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93

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Extended Translation for Drives > 1 GByte
This option allows you to enable or disable extended translation
for SCSI hard disks with a capacity greater than 1 GByte. The
default setting is
enabled
. Appendix D,
Disk Drives Over 1
Gigabyte
discusses the extended translation feature in detail.
If this option is enabled, the following translation schemes are used:
•
SCSI hard disks
≤
1 GByte use a translation scheme of 64
heads, 32 sectors per track
•
SCSI hard disks
1 GByte use a translation scheme of 255
heads, 63 sectors per track
Note
Enabling this option for operating systems that do not need
extended translation (e.g., NetWare
®
386 and UNIX
®
) can
cause drive failure and/or data loss)
Support More than Two Drives
This option allows you to enable or disable BIOS support for more
than two SCSI hard disks (supported by DOS 5.0 and above). The
default setting is
disabled
.
SCSI Device Configuration
SCSI Device Configuration allows you to customize the configura-
tion of each SCSI device connected on the SCSI bus. When this
option is selected, a screen similar to Figure 3-13 is displayed. All
SCSI IDs are displayed on the screen even if no SCSI device is
attached; however, to configure a specific SCSI device, you will
need to know which SCSI ID corresponds to that SCSI device.
Use the cursor keys to move between options. To toggle values for
each option, press the
Enter
key.
Adaptec AHA-2740 Series User’s Manual
Stock Number:
510381-00
/
Rev. C
(Page 3-14)
Print Spec Number:
491709-00 Rev C
Current Date:
9/1/93
ECN Date:
9/14/93
AHA-2740 Series User’s Manual
3-14