Problem with detecting DVD drive on HP-UX server

[Steve dodd100]

I have a production HP-UX server. OS is 11.11

It has one tape drive & one DVD-RW drive installed. Drivers for both are installed and also checked thru SAM in peripheral devices. They are correct. However the DVD drive is not getting detected by ioscan -fnCdisk

But it's not a hardware issue, as the same DVD drive works fine on another HP-UX 11.11 server box. Also when the tape drive is replaced in the same SCSI slot of DVD drive, that's too get detected & works fine....

It's issue with detection of DVD drive only....and I think it's something related to any missing DVD-hardware related patch

Any clue ?

thanks
RK

[Pete Randall]

What happens if you scan the path with ioscan -H?

# ioscan -fnH 1/0/0/3/1.2.0
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
disk 5 1/0/0/3/1.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c15t2d0 /dev/rdsk/c15t2d0

Do you see anything at your DVD's address?


Pete

[sreekanthtm]

post ioscan -fnC disk o/p

[Steve dodd100]

When I do:-

server1:/tmp# ioscan -fnCdisk | grep -i DVD

I get no output.

But when I have run same command on the another server named server2 (server1 & server2 are in cluster)

I get following output:-

server2:/#ioscan -fnCdisk | grep -i dvd
disk 100 3/0/1/0/0.3.0 sdisk CLAIMED DEVICE _NEC DVD+RW ND-2100AD

[Torsten.]

Look at my ioscan:

disk 0 0/0/2/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-C
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0


It is a DVD, but not called DVD in the name string.

Post your

# ioscan -fn

[Pete Randall]

And what happens if you look at the particular path of the DVD device? Grepping on DVD will not work if the description doesn't contain DVD.


Pete

[Torsten.]

Just for reference, here is another one
(USB drive on hp-ux 11.31):

disk 2 0/0/2/1.0.16 UsbScsiAdaptor CLAIMED DEVICE USB SCSI Stack Adaptor
/dev/deviceFileSystem/Usb/MassStorage/dsk/disk@hp-1008+294=A60020000001
/dev/deviceFileSystem/Usb/MassStorage/rdsk/disk@hp-1008+294=A60020000001


Doesn't look like, but is DVD.

;-)

[Steve dodd100]

OK....Here is my complete ioscan -fnCdisk output. The output is too big as there disks from XP too....

I am not posting output of ioscan -fn as it'll be very long.....

thanks
RK

server1:/tmp#ioscan -fnCdisk
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
disk 5 6/0/3/0/0.5.0 sdisk CLAIMED DEVICE COMPAQ BF0728A4BA
/dev/dsk/c2t5d0 /dev/rdsk/c2t5d0
disk 6 6/0/3/0/0.8.0 sdisk CLAIMED DEVICE COMPAQ BF0728A4BA
/dev/dsk/c2t8d0 /dev/rdsk/c2t8d0
disk 56 6/0/6/0/0.12.32.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V-CM
/dev/dsk/c7t0d0 /dev/rdsk/c7t0d0
disk 93 6/0/6/0/0.12.32.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d1 /dev/rdsk/c7t0d1
disk 94 6/0/6/0/0.12.32.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d2 /dev/rdsk/c7t0d2
disk 95 6/0/6/0/0.12.32.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d3 /dev/rdsk/c7t0d3
disk 96 6/0/6/0/0.12.32.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d4 /dev/rdsk/c7t0d4
disk 97 6/0/6/0/0.12.32.0.0.0.5 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d5 /dev/rdsk/c7t0d5
disk 99 6/0/6/0/0.12.32.0.0.0.6 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d6 /dev/rdsk/c7t0d6
disk 101 6/0/6/0/0.12.32.0.0.0.7 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c7t0d7 /dev/rdsk/c7t0d7
disk 58 6/0/6/0/0.12.32.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t1d0 /dev/rdsk/c7t1d0
disk 60 6/0/6/0/0.12.32.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t2d0 /dev/rdsk/c7t2d0
disk 62 6/0/6/0/0.12.32.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t3d0 /dev/rdsk/c7t3d0
disk 64 6/0/6/0/0.12.32.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t4d0 /dev/rdsk/c7t4d0
disk 66 6/0/6/0/0.12.32.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t5d0 /dev/rdsk/c7t5d0
disk 68 6/0/6/0/0.12.32.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t6d0 /dev/rdsk/c7t6d0
disk 70 6/0/6/0/0.12.32.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t7d0 /dev/rdsk/c7t7d0
disk 72 6/0/6/0/0.12.32.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t8d0 /dev/rdsk/c7t8d0
disk 74 6/0/6/0/0.12.32.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t9d0 /dev/rdsk/c7t9d0
disk 76 6/0/6/0/0.12.32.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t10d0 /dev/rdsk/c7t10d0
disk 78 6/0/6/0/0.12.32.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t11d0 /dev/rdsk/c7t11d0
disk 80 6/0/6/0/0.12.32.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t12d0 /dev/rdsk/c7t12d0
disk 82 6/0/6/0/0.12.32.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t13d0 /dev/rdsk/c7t13d0
disk 84 6/0/6/0/0.12.32.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t14d0 /dev/rdsk/c7t14d0
disk 86 6/0/6/0/0.12.32.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c7t15d0 /dev/rdsk/c7t15d0
disk 57 6/0/6/0/0.12.80.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V-CM
/dev/dsk/c11t0d0 /dev/rdsk/c11t0d0
disk 59 6/0/6/0/0.12.80.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t1d0 /dev/rdsk/c11t1d0
disk 61 6/0/6/0/0.12.80.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t2d0 /dev/rdsk/c11t2d0
disk 63 6/0/6/0/0.12.80.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t3d0 /dev/rdsk/c11t3d0
disk 65 6/0/6/0/0.12.80.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t4d0 /dev/rdsk/c11t4d0
disk 67 6/0/6/0/0.12.80.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t5d0 /dev/rdsk/c11t5d0
disk 69 6/0/6/0/0.12.80.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t6d0 /dev/rdsk/c11t6d0
disk 71 6/0/6/0/0.12.80.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t7d0 /dev/rdsk/c11t7d0
disk 73 6/0/6/0/0.12.80.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t8d0 /dev/rdsk/c11t8d0
disk 75 6/0/6/0/0.12.80.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t9d0 /dev/rdsk/c11t9d0
disk 77 6/0/6/0/0.12.80.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t10d0 /dev/rdsk/c11t10d0
disk 79 6/0/6/0/0.12.80.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t11d0 /dev/rdsk/c11t11d0
disk 81 6/0/6/0/0.12.80.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t12d0 /dev/rdsk/c11t12d0
disk 83 6/0/6/0/0.12.80.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t13d0 /dev/rdsk/c11t13d0
disk 85 6/0/6/0/0.12.80.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t14d0 /dev/rdsk/c11t14d0
disk 87 6/0/6/0/0.12.80.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t15d0 /dev/rdsk/c11t15d0
disk 7 6/0/9/0/0.0.0 sdisk CLAIMED DEVICE COMPAQ BF0728A4BA
/dev/dsk/c8t0d0 /dev/rdsk/c8t0d0
disk 14 6/0/9/0/0.1.0 sdisk CLAIMED DEVICE COMPAQ BF0728A4BA
/dev/dsk/c8t1d0 /dev/rdsk/c8t1d0
disk 15 6/0/12/0/0.11.32.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V-CM
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
disk 88 6/0/12/0/0.11.32.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d1 /dev/rdsk/c1t0d1
disk 89 6/0/12/0/0.11.32.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d2 /dev/rdsk/c1t0d2
disk 90 6/0/12/0/0.11.32.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d3 /dev/rdsk/c1t0d3
disk 91 6/0/12/0/0.11.32.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d4 /dev/rdsk/c1t0d4
disk 92 6/0/12/0/0.11.32.0.0.0.5 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d5 /dev/rdsk/c1t0d5
disk 98 6/0/12/0/0.11.32.0.0.0.6 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d6 /dev/rdsk/c1t0d6
disk 100 6/0/12/0/0.11.32.0.0.0.7 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c1t0d7 /dev/rdsk/c1t0d7
disk 25 6/0/12/0/0.11.32.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t1d0 /dev/rdsk/c1t1d0
disk 27 6/0/12/0/0.11.32.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
disk 30 6/0/12/0/0.11.32.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t3d0 /dev/rdsk/c1t3d0
disk 32 6/0/12/0/0.11.32.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t4d0 /dev/rdsk/c1t4d0
disk 34 6/0/12/0/0.11.32.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t5d0 /dev/rdsk/c1t5d0
disk 36 6/0/12/0/0.11.32.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t6d0 /dev/rdsk/c1t6d0
disk 38 6/0/12/0/0.11.32.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t7d0 /dev/rdsk/c1t7d0
disk 40 6/0/12/0/0.11.32.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t8d0 /dev/rdsk/c1t8d0
disk 42 6/0/12/0/0.11.32.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t9d0 /dev/rdsk/c1t9d0
disk 44 6/0/12/0/0.11.32.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t10d0 /dev/rdsk/c1t10d0
disk 46 6/0/12/0/0.11.32.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t11d0 /dev/rdsk/c1t11d0
disk 48 6/0/12/0/0.11.32.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t12d0 /dev/rdsk/c1t12d0
disk 50 6/0/12/0/0.11.32.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t13d0 /dev/rdsk/c1t13d0
disk 52 6/0/12/0/0.11.32.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t14d0 /dev/rdsk/c1t14d0
disk 54 6/0/12/0/0.11.32.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0
disk 18 6/0/12/0/0.11.80.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V-CM
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0
disk 26 6/0/12/0/0.11.80.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t1d0 /dev/rdsk/c5t1d0
disk 29 6/0/12/0/0.11.80.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t2d0 /dev/rdsk/c5t2d0
disk 31 6/0/12/0/0.11.80.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t3d0 /dev/rdsk/c5t3d0
disk 33 6/0/12/0/0.11.80.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t4d0 /dev/rdsk/c5t4d0
disk 35 6/0/12/0/0.11.80.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t5d0 /dev/rdsk/c5t5d0
disk 37 6/0/12/0/0.11.80.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t6d0 /dev/rdsk/c5t6d0
disk 39 6/0/12/0/0.11.80.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t7d0 /dev/rdsk/c5t7d0
disk 41 6/0/12/0/0.11.80.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t8d0 /dev/rdsk/c5t8d0
disk 43 6/0/12/0/0.11.80.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t9d0 /dev/rdsk/c5t9d0
disk 45 6/0/12/0/0.11.80.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t10d0 /dev/rdsk/c5t10d0
disk 47 6/0/12/0/0.11.80.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t11d0 /dev/rdsk/c5t11d0
disk 49 6/0/12/0/0.11.80.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t12d0 /dev/rdsk/c5t12d0
disk 51 6/0/12/0/0.11.80.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t13d0 /dev/rdsk/c5t13d0
disk 53 6/0/12/0/0.11.80.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t14d0 /dev/rdsk/c5t14d0
disk 55 6/0/12/0/0.11.80.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c5t15d0 /dev/rdsk/c5t15d0
server1:/tmp#
server1:/tmp#

[sreekanthtm]

OK.... Now its clear that, ur DVD drive is not get detected. May be the DVD drive issue or the Slot issue.
You can confirm by doing the following...
Conect (refix) the DVD in ur sever.
Run simple ioscan
#ioscan
#insf
Then see whether its got detected??
One more dbt? Was this DVD drive working in this server. Is this is a fresh DVD drive then check the h/w compactability also

Cheers

[Steve dodd100]

Hi Sreekanth,
I done following steps along with insf and ioscan commands:-
1) replaced DVD drive wth tape drive; tape drive got detected. Hence there is no slot issue.

2) replaced this DVD drive with another working DVD drive from another server; not getting detected.

3) tried this DVD drive to another working server, it got detected there. means DVD drive is also working fime

So it means server1 is not allowing DVD drive only....is it some DVD H/W related patch issue.. ?

regards
Ravi

[KAUSTAV BOSE]

Can you post the DVD model information?

Also when you attach a tape drive in the slot where you are trying to attach the DVD drive, what is the hardware path it shows up as?

[Pete Randall]

If you can see the tape drive then you must be able to figure out what the path is. Scan that path using "ioscan -fnH" and report the results.


Pete

[Steve dodd100]

The DVD-RW model is ND 35-40A

Before replacing DVD-drive with tape drive, this was my output....

server1:/tmp#ioscan -fnCtape
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
tape 0 6/0/1/0/0.1.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/0m /dev/rmt/3m /dev/rmt/c0t1d0BEST /dev/rmt/c0t1d0DDS
/dev/rmt/0mb /dev/rmt/3mb /dev/rmt/c0t1d0BESTb /dev/rmt/c0t1d0DDSb
/dev/rmt/0mn /dev/rmt/3mn /dev/rmt/c0t1d0BESTn /dev/rmt/c0t1d0DDSn
/dev/rmt/0mnb /dev/rmt/3mnb /dev/rmt/c0t1d0BESTnb /dev/rmt/c0t1d0DDSnb
tape 1 6/0/1/0/0.3.0 stape NO_HW DEVICE HP C7438A
/dev/rmt/1m /dev/rmt/1mn /dev/rmt/c0t3d0BEST /dev/rmt/c0t3d0BESTn
/dev/rmt/1mb /dev/rmt/1mnb /dev/rmt/c0t3d0BESTb /dev/rmt/c0t3d0BESTnb

Then I replaced the DVD drive with tape drive and run following command


server1:/tmp#insf
insf: Installing special files for stape instance 1 address 6/0/1/0/0.3.0

server1:/tmp#ioscan -fnCtape
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
tape 0 6/0/1/0/0.1.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/0m /dev/rmt/3m /dev/rmt/c0t1d0BEST /dev/rmt/c0t1d0DDS
/dev/rmt/0mb /dev/rmt/3mb /dev/rmt/c0t1d0BESTb /dev/rmt/c0t1d0DDSb
/dev/rmt/0mn /dev/rmt/3mn /dev/rmt/c0t1d0BESTn /dev/rmt/c0t1d0DDSn
/dev/rmt/0mnb /dev/rmt/3mnb /dev/rmt/c0t1d0BESTnb /dev/rmt/c0t1d0DDSnb
tape 1 6/0/1/0/0.3.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/1m /dev/rmt/1mn /dev/rmt/c0t3d0BEST /dev/rmt/c0t3d0BESTn
/dev/rmt/1mb /dev/rmt/1mnb /dev/rmt/c0t3d0BESTb /dev/rmt/c0t3d0BESTnb


server1:/tmp#ioscan -fnH 6/0/1/0/0.3.0
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
tape 1 6/0/1/0/0.3.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/1m /dev/rmt/1mn /dev/rmt/c0t3d0BEST /dev/rmt/c0t3d0BESTn
/dev/rmt/1mb /dev/rmt/1mnb /dev/rmt/c0t3d0BESTb /dev/rmt/c0t3d0BESTnb

[Pete Randall]

OK, I'll try one last time.

With the DVD drive installed in place of the tape drive, what does "ioscan -fnH 6/0/1/0/0.3.0" return?


Pete

[Torsten.]

Is the chassis a tapearray 5300?

A bent pin on the cable can produce very strange results - check this.

[Andrew Rutter]

hi,

what is the scsi id of the tape drive? you may simply just have a conflict.

check on the other server if you dont know and then check the hardware path to make sure that there is nothing with the same ID.

id it is a 5300 box then check the terminators on the back! a bad terminator would cause this.
(We had a customer who replaced the tape drive and cable in one, followed by the whole ta5300 chassis only to find afterwards it was just the terminator gone bad)

but do a full ioscan when just connected first, to force a new scan of the hardware not a cached one.

Andy

[KAUSTAV BOSE]

try removing the device files generated from insf when the tape device was connected using :

rmsf -H 6/0/1/0/0.1.0

and then connect the DVD drive and run insf again