Correct procedure for 'pulling' a DLT8000 from a smart enclosure....

[BOB BARBA]

What is the correct procedure for 'pulling' a DLT8000 from a smart enclosure. I recently powered off a DLT8000 in our 'smart enclosure', removed it to check the SCSI ID, then returned it and powered it back on. The device was not recognised by the system (N4000) and when I performed an ioscan the tape did not register as 'CLAIMED'. Can you please advise on the correct commands that I should issue, prior to, and after pulling the DLT. Many thanks in advance. Bob

[Tracey]

I was recently told by my HP tech that even though they say "hot-swappable" they really aren't. Most often the machine needs a reboot in order to recognize the tape drive again.

Tracey

[Sukant Naik]

Hi Bob,

You need to run 'rmsf' command before pulling out the drive and then 'ioscan' command and then 'insf' command. This doesn't needs a reboot.

But if the above procedure doesnt work, then you have to go the royal way of rebooting the system ;-)

- Sukant

[John Palmer]

Hi Bob,

What I'd do, providing the tape is the only peripheral on the SCSI bus:

1. Power off the drive.
2. Pull/replace the drive.
3. Run ioscan -fnC tape to rescan the hardware.

We had one changed last night using this procedure. You can also run diskinfo -v /dev/rmt/?m to check that it responds.

Regards,
John

[MCP-DOC]

We had our DLT-drive replaced last month, in our case we have two drives. The engineer first took the broken drive offline through the display.Then he powered the 'broken' one off and did the trick with the fiberchannel-card so the other drive still was online. Then he checked the firmware on the online-drive and made sure the the new one he was going to put back in had the same FW-level. He replaced the drive, put back on the FC and through the display he put the drive online. After configuring the drive, also by the display, we ran a ioscan and the new drive was CLAIMED.

[Duncan Edmonstone]

The problems occur if there is seomthing else being used on the same SCSI bus (and with a DLT8000 I would expect that the only other item you would have on the same bus is another tape drive).

There is a chance that you can cause a bus reset when pulling the drive if other targets on the bus are in use.

HTH

Duncan