"ioscan -fnNC tape" shows devices with "NO_HW"

[Sivarama Raju]

Hello,

I did a LUN modification on the EMC DataDomain devices for the HP-UX 11.31 Initiators, on the EMC DataDomain admin console.

After this, when I run an "ioscan -fnNC tape" on the HP-UX 11.31 IA 64, all those devices appear with "NO_HW" and the backup application cannot detect the devices.

I do not have good experience with this, can anyone please help me with this issue.

Please find below a part of the output of command "ioscan -fnNC tape"

root@serv001-# /usr/sbin/ioscan -fnNC tape
Class     I  H/W Path  Driver S/W State   H/W Type     Description
===================================================================
tape     20  64000/0xfa00/0x17  estape   NO_HW       DEVICE       IBM     ULTRIUM-TD3
                      /dev/rtape/tape20_BEST    /dev/rtape/tape20_BESTb   /dev/rtape/tape20_BESTn   /dev/rtape/tape20_BESTnb
tape     21  64000/0xfa00/0x18  estape   NO_HW       DEVICE       IBM     ULTRIUM-TD3
                      /dev/rtape/tape21_BEST    /dev/rtape/tape21_BESTb   /dev/rtape/tape21_BESTn   /dev/rtape/tape21_BESTnb

Thanks,

Siva

[RAJD1]

Hi Siva,

Do you see any error with dmesg, 

if yes pls post,  you may have to do lun binding with wwn, with help of scimgr .

Cheers,

Raj D.

[Ozer YUMSEK]

Hi Sivarama,

#rmsf -x

Clears all detached devices.

My advice is clear all detached devices because sometimes it gives errors.

Then you can

#ioscan

and

#insf -e

#ioscan -fnNC tape

You will see your tapes there.

Regards.

[vishnu.khandare]

Hi,

Please check the dmseg, check the drive is On, check drive is proparly connected to scsi.

Regards

Vishnu

[Torsten.]

Not sure what modification you did.

Some related messages in syslog?

I assume there is an advise to use ‘scsimgr replace_wwid’.

Locate the document

SCSIMGR - SCSI Management and Diagnostics utility on HP-UX 11i v3

and read from page 29 on.

Or just reboot the server.