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Unable to make backup with No overwrite media set using tape library

Created: 04 Jul 2013 | 12 comments
D-E's picture

Hello,

I'm running Backup Exec 2012 and I am having some problems creating backup jobs to backup data for offsite storage. My full and differential backups works without problems using scratch media in a tape library. But when I try change the media set from my daily or weekly media sets to a media set with overwrite period infinite, the job fails with "No appendable media could be mounted".

What should I do to troubleshoot this error?

Thanks

Operating Systems:

Comments 12 CommentsJump to latest comment

CraigV's picture

...if the OPP is set to Infinite it won't be overwritten. You need to shorten that so that the tapes are returned to the Scratch set.

Thanks!

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D-E's picture

Thanks for the comment, I guess I was a bit unclear.

I have full and differential backup jobs running using scratch media and two media sets (daily and weekly). This backup job is to create permanent backups to be stored offsite. I have a mediaset with overwrite period "Infinite - Don't allow overwrite" to achieve that. The append period is "Infinite - Allow append", because I don't want to have anything stopping the job to run now. 

I have about 10 blank tapes assigned to this media set in the tape library. In the job->storage setting Media set is set to this set.

I have no scratch media in the library, but I thought that by assigning media to the media set assigned to the job these specific tapes would be used.

CraigV's picture

...if you have no Scratch media in the library and you manually assign tapes to the scratch set, you might have to run a scan (if you use barcode labels) or an inventory job so that BE is now aware that tapes present in the library have had their properties changed!

Thanks!

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D-E's picture

Ah, no I assigned the blank tapes to the "offsite" media set, not scratch.

Basically, what I am trying to achieve is running periodic full backups to tapes that I will never overwrite and that I will eject from the tape library. How would I go about doing that? :)

CraigV's picture

The Offsite set means they won't be used...it has to be the Scratch set.

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D-E's picture

Do you mean that a media set with OPP and append period set to infinite will never be used? Then how do I make a media set that will never be overwritten?

CraigV's picture

Set the OPP protection to years, or physically write protect the tape by sliding the protection tab across. But placing scratch tapes into the Offiste media group would mean BE would never use them as they are considered unavailable by BE.

Thanks!

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Colin Weaver's picture

I take it your jobs are not starting on one taope (as an append) and then filling that tape in the middel of a job?

If they are then please be aware that when we span to an extra tape within a running job, then this operation then becomes an overwrite. Append ONLY applies the start of the job and therefore the first tape in teh job, all subsequent tapes request in the job have to be overwrites.

One ofther point if you have a 2 drive library but only one appendeable tape:

 If job 1 starts and grabs that tape and uses the first drive, then whilst job 1 is still running job 2 starts tries to use 2nd drive and can't find an appendable media, it will pop up an alert askign for overwritable. If job1 then finishes and leaves space on the 1 appendable tape, because job 2 is already asking for overwriteable media it cannot switch back to an append operation and will remain asking for overwriteable.

D-E's picture

Guys,

I've changed my media set to have a 5 year OPP and I have moved a bunch of tapes to scratch. Still the job failes with no appendable media found.

Colin Weaver's picture

If you move to scratch media, doesn't the media go not appendable and ONLY overwriteable (you should be able to see this against the status of the media in the BE console)

BTW Once you get this setup correctly you should not have to move media manually to scratch

pkh's picture

Check that your job is not set to Append to media, terminate job if no appendable media is available.  It should be set to Append to media, overwrite if no appendable media is available.  This way, the job can use overwritable media (scratch media) when there is no appendable media.

pkh's picture

Since you are going to keep your tapes for very long periods, I would recommend that you do not append to your tapes, just overwrite them.  You should set up your BE this way:

1) set your job to Overwrite media

2) target your job to your media set which you have set to a long OPP.

3) put all the tapes that you want to use in the scratch media set.