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Tape Drives not Displaying From Net Backup

Created: 24 May 2012 • Updated: 27 Oct 2012 | 8 comments
This issue has been solved. See solution.

Hi All,

 

I have a problem regarding the tape drives in Net backup Server. Let me explain in a clear way.

Net Backup Master server is Unix, We are not able to see the drives from our netbackup command line/consule, I Have check with the local site team and got an update like the drives are working fine from there ACSLS library. Looks like drives are not visuial with OS level.

 

So can you please help in getting the tapes visiable from netbackup console, Please help me in sloving this.

 

Let me knwo if tou newed sny more information.

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mph999's picture

What version of NBU and what is the OS

(1)

Can the operationg system see the tape drives :

For example :

HP - ioscan -fnCtape

Solaris - cfgadm -al or cfgadm -al -o show_FCP_dev

(2)

If OS can see the devices, then what does /usr/openv/volmgr/bin/scan show ?

If the OS cannot see the tape drives than you need to check things such as SAN zoning ...

 

Martin

 

Regards,  Martin
 
Setting Logs in NetBackup:
http://www.symantec.com/docs/TECH75805
 
Vamsi-smile's picture

 

Please find my answers below :

 

What version of NBU and what is the OS

(1) NBU Version 5.1 & OS is Lnix

Can the operationg system see the tape dri ves : No it cant see

 

(2)

If OS can see the devices, then what does /usr/openv/volmgr/bin/scan show ? What Can i see if I run Scan?

If the OS cannot see the tape drives than you need to check things such as SAN zoning ...

revaroo's picture

1)  NBU Version 5.1 - no longer supported- you need to consider upgrading, especially if you have a support contract with Symantec!

You mentioned: Can the operationg system see the tape dri ves : No it cant see

If the OS cannot see the drives, then neither will NetBackup. NetBackup relies on the OS seeing devices FIRST! Get this sorted with you SAN/OS support team, once you can see the drives at the OS then /usr/openv/volmgr/bin/scan will see the drives and you can configure the drives with /usr/openv/volmgr/bin/tpautoconf -a

 

 

 

Marianne's picture

In addition to above excellent posts:

ACSLS funtionality means that 'Control Path' is configured correctly.

Control path is the physical connection from robot to tape drives as well as ACSLS software configuration.

OS visibility needs 'Data Path'.
This means a data cable is needed between tape drive and media server.
Depending on drive type, this will either be a SCSI cable directly from tape drive to server, or else fibre cable connected to SAN switch, which needs to be zoned to media server.

So - you need to go trace the 'Data Path'.  SCSI? Fibre? Zoned correctly?

Don't even try to scan NBU before OS can see/use tape drives.

See this doc for NBU version support info: http://www.symantec.com/docs/TECH74757

Next, check current compatibility lists: http://www.symantec.com/docs/TECH59978

 

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Omar Villa's picture

To configure a drive you need:

1. Drives mounted in the silo and wired to a SAN Switch

2. Media servers wired to the same Fabric were the drives are wired

3. Create Zoning between Media Servers and Drives

4. Rescan Devices in your media servers and in some cases reboot them.

5. Check that you have the /dev/rmt/ entries at OS level without this means you cannot see the drives, you can use iostat -exn in solaris or go to the messages logs and grep for rmt or st so you can the drives

Omar Villa

Netbackup Expert

Twiter: @omarvillaNBU

 

Vamsi-smile's picture

Hi All,

Thank you very much for your all posts.

I am aware then Net Backup version 5.1is no longer supported. But I need a solution which can help in present position.

I want add somes more points here whcih may try to get help from you people :

  • When I start the NBU services below output appers :

 

root@p14ebu.nielsenmedia.com:/usr/openv/netbackup/bin# netbackup start
NetBackup NDMP Mover Agent started.
Media Manager daemons started.
NetBackup request daemon started.
 
No Entries in the Drive Database
 
  • When I check in NBU consule ltid service is not coming up?

Can I get any help to bring the service up.

Many thanks in advance

 

Marianne's picture

Please forget about NetBackup until your OS can see the devices.

NBU needs OS to see/use devices, then drives can be added to NBU. Only then will ltid start.

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

SOLUTION
mansoor.sheik's picture

Hi guys,

 

I convey my experience in making the drives visible to my OS(HPUX)

Our Tape Drives is HP Ultirum Drive and Tape Library is EML e series.

In Tape Library, Under Configuration -- > host access ----> Access control group.

need to create a access control group with the zoned drive . After that I am able to see my drives in server.