Can't use tape drive (no /dev/st0)

Hello buddies,

I've purchased PV110 tape drive and Poweredge 2970 with RHEL v4 pre-
installed.
However, I can't use the tape drive.

When booting the machine, it shows that PV110 has been attached.

But I can't use the tape drive because there is no /dev/st0 device
file.

# mt -f /dev/st0 status
/dev/st0: No such file or directory


This is some related machine information:

-------------aic7xxx driver loaded--------------
# lsmod | grep aic
aic7xxx 149497 0
scsi_mod 140177 6
aic7xxx,mptsas,mptscsih,libata,megaraid_sas,sd_mod

-------------scsi information-------------------
# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 08 Lun: 00
Vendor: DP Model: BACKPLANE Rev: 1.05
Type: Enclosure ANSI SCSI revision: 05
Host: scsi0 Channel: 02 Id: 00 Lun: 00
Vendor: DELL Model: PERC 5/i Rev: 1.03
Type: Direct-Access ANSI SCSI revision: 05

Morever, running kudzu but no new device detected. How can I use the
tape drive? Thanks!

.

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