hi,
i have problem with scsi,dat and dlt tape.
i use REdHat Linux AS 3.0
and i use HP dat tape and Compaq SDLT tape,
i can not use these
thanks

Need some additional information. What do you mean by I can not use these?

What SCSI controller including model number is installed in the computer?
What is the model number of the HP and Compaq tape drives.

Is the SCSI bus terminated correctly. Are the SCSI IDs set correctly.

Does the SCSI controller BIOS recognize the tape drives?
Does Redhat recognize the SCSI controller?
Does Redhat recognize the tape drives?

What is the output of the following commands?
cat /proc/scsi/scsi
lsmod

Look at the output of dmesg for any errors with the SCSI controller and tape drives.

There are two Serial ATA disks on my comp.

how can i terminate scsi bus?

SCSI ID #0: HP HP35480A Fast/Ultra-SE
SCSI ID #2: DEC TZ89(C) DEC ULTRA2-SE
SCSI ID #7: AHA-2940U2W


[oracle@isle02 oracle]$ cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD2000JD-00F Rev: 0.70
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD2000JD-00F Rev: 0.70
Type: Direct-Access ANSI SCSI revision: 05


[oracle@isle02 oracle]$ lsmod
Module Size Used by Not tainted
parport_pc 19204 1 (autoclean)
lp 9220 0 (autoclean)
parport 39072 1 (autoclean) [parport_pc lp]
autofs 13780 0 (autoclean) (unused)
nfsd 86960 8 (autoclean)
lockd 60656 1 (autoclean) [nfsd]
sunrpc 92124 1 (autoclean) [nfsd lockd]
e1000 72320 2
floppy 59056 0 (autoclean)
microcode 5248 0 (autoclean)
ide-scsi 12368 0
ide-cd 35776 0
cdrom 34144 0 [ide-cd]
keybdev 2976 0 (unused)
mousedev 5688 0 (unused)
hid 22404 0 (unused)
input 6208 0 [keybdev mousedev hid]
ehci-hcd 20904 0 (unused)
usb-uhci 27532 0 (unused)
usbcore 83168 1 [hid ehci-hcd usb-uhci]
ext3 95784 4
jbd 56856 4 [ext3]
ata_piix 3908 5
libata 28644 0 [ata_piix]
sd_mod 13744 10
scsi_mod 116904 3 [ide-scsi ata_piix libata sd_mod]


[oracle@isle02 oracle]$ lspci
00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02)
00:1d.0 USB Controller: Intel Corp. 82801EB USB (rev 02)
00:1d.1 USB Controller: Intel Corp. 82801EB USB (rev 02)
00:1d.2 USB Controller: Intel Corp. 82801EB USB (rev 02)
00:1d.3 USB Controller: Intel Corp. 82801EB USB (rev 02)
00:1d.7 USB Controller: Intel Corp. 82801EB USB2 (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corp. 82801EB LPC Interface Controller (rev 02)
00:1f.1 IDE interface: Intel Corp. 82801EB Ultra ATA Storage Controller (rev 02)
00:1f.2 IDE interface: Intel Corp. 82801EB Ultra ATA Storage Controller (rev 02)
00:1f.3 SMBus: Intel Corp. 82801EB SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corp. 82801EB AC'97 Audio Controller (rev 02)
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)
02:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
02:04.0 RAID bus controller: Promise Technology, Inc.: Unknown device 3373 (rev 02)
02:05.0 Ethernet controller: 3Com Corporation 3c940 1000Base? (rev 12)
02:0a.0 SCSI storage controller: Adaptec AHA-2940U2/U2W
02:0b.0 Ethernet controller: Intel Corp. 82543GC Gigabit Ethernet Controller (Copper) (rev 02)
02:0d.0 Ethernet controller: Intel Corp. 82543GC Gigabit Ethernet Controller (Copper) (rev 02)


[oracle@isle02 oracle]$ dmesg|egrep -n "scsi|SCSI"
49:Kernel command line: ro root=LABEL=/ hda=ide-scsi
50:ide_setup: hda=ide-scsi
254:SCSI subsystem driver Revision: 1.00
266:scsi0 : ata_piix
267:scsi1 : ata_piix
270: Type: Direct-Access ANSI SCSI revision: 05
274: Type: Direct-Access ANSI SCSI revision: 05
276:Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
277:Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
278:SCSI device sda: 390721968 512-byte hdwr sectors (200050 MB)
281:SCSI device sdb: 390721968 512-byte hdwr sectors (200050 MB)
342:scsi2 : SCSI host adapter emulation for IDE ATAPI devices



thanks a lot...

I do not see the SCSI controller module or tape module loaded.
Try:
modprobe aic7xxx
modprobe st

Once the moduls are loaded you should be able to see the tape drives.
If cat /proc/scsi/scsi doesn't show the tape drives then look at the output of dmesg again.

The HP should be /dev/st0 and the DEC /dev/st1

The SCSI cable needs to be terminated on each end of the cable. The controller it usually one end. There should be a bus terminator on the last device on the cable. It could be built in to the drive or a device that attaches to the cable or to one of the conectors on the device.

thanks a lot
after
modprobe aic7xxx
modprobe st

the problem solved
thanks a lot