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Backup Completed with Exceptions: Used Tapes still in Scratch Media

Created: 10 Aug 2013 • Updated: 15 Aug 2013 | 7 comments
This issue has been solved. See solution.
Hello Guys!
 
  1. I am trying to backup a NAS Device (1.6 TB) to a HP 1/8 Storageworks Tape Library.
  2. Tapes in the Slots are HP Ultrium LTO3 RW 800 GB (on a 2:1 compression ratio).
  3. Due to the size of the Data being backed up during a FULL Backup (1.6 TB) and errors encountered in the past as a result, I divided 1 FULL Backup Job into 4 Separate Sets of Jobs in order to get a more granular look.
  4. Jobs are Labelled Job01, Job02, Job03 and Job04.
  5. Each of the 4 Jobs are Mutually Exclusive of one another (no data duplication during backup).
  6. I created a Partition containing 4 Slots in the BE Console > Devices [0005...0008]. The partiotion contains Slots from 05 until 08.
  7. I created a MEDIA SET named SET01 with the following settings: OPP = 2 weeks, AP = 3 Days.
  8. I configured the AP at 3 Days because the Media Set would be writing to the partition containing 4 Slots and some of the Jobs may require that the data be 'spanned' across more than 1 Tape.
  9. I erased the 4 Tapes. This automatically allocated them to the Scratch Media Set. I did not manually allocate the Tapes to SET01.
  10. The 1st Job started on THU 04:52 PM and the Last Job Started on SAT 12:47 AM (therefore the AP configured in SET01 is OK).
  11. Job 01 failed reporting a corrupt data (I am not worried as its only 1 file and the rest of them in the Job look okay).
  12. Job 02 through 04 completed with 'exceptions'.
  13. Apart from 'snapshot_init_failure' Remote Agent not detected on the NAS Device, there seems to be nothing in all the 3 corresponding XML Log files that indicate what the 'exception' really is.
  14. I look under Media Sets. Tapes in the Slots 5 and 6 were moved from Scratch Media Set to SET01. Tapes in the Slots 7 & 8 are still in the Scratch Media Set.
  15. Tapes in Slots 5, 7 and 8 are Completely Used. The tape in Slot 6 is partially used.
 
QUESTIONS:
 
  1. Why are the Tapes in Slot 7 and 8 not in SET01 instead of the Scratch Media Set ?
  2. Can I remove the 4 tapes from the Tape Library (Manually) and be able to catalog them in the future for any restores ?
  3. Where can i look to find out what the 'exception' is really about ?

 

Thanks a lot !

 
Operating Systems:

Comments 7 CommentsJump to latest comment

pkh's picture

Why are the Tapes in Slot 7 and 8 not in SET01 instead of the Scratch Media Set ?

 

If they are not used by your jobs, they will remain in the scratch media set.  Check your job log to confirm that only the other 2 tapes are used.

 

Can I remove the 4 tapes from the Tape Library (Manually) and be able to catalog them in the future for anyrestores ?

 

Yes.  If the tapes in slot 5 & 6 are used and are not ovewritten, then they should be still cataloged and you do not need to catalog them again to do a restore.

 

Where can i look to find out what the 'exception' is really about ?

 

View your job log and click on the Expand All button.  You should be able to see the exceptions.

 

Mac1983's picture

Hi pkh !

 

Why are the Tapes in Slot 7 and 8 not in SET01 instead of the Scratch Media Set ?

If they are not used by your jobs, they will remain in the scratch media set.  Check your job log to confirm that only the other 2 tapes are used.

## I can confirm that all 4 Tapes in all the 4 Slots were used by the jobs (verified in the logs). However, I may know what's going on. I had tried renaming the Media in Slot 7 and 8 right before Job01 was scheduled to start. Somehow, the 'rename job' postponed itself and executed after Job04 completed. I know how it sounds but the important thing to note is all 4 Slots were used. Now, are tapes in slot 7 and 8 good for a restore or am i looking at one more weekend of a FULL backup job run ? ##

 

Can I remove the 4 tapes from the Tape Library (Manually) and be able to catalog them in the future for anyrestores ?

Yes.  If the tapes in slot 5 & 6 are used and are not ovewritten, then they should be still cataloged and you do not need to catalog them again to do a restore.

## Same question as above ##

 

Where can i look to find out what the 'exception' is really about ?

View your job log and click on the Expand All button.  You should be able to see the exceptions.

## Got this one. Silly me! The Exceptions are exactly what i thought they were: "The Media Server was unable to connect to the Remote Agent on [NASDEVICE]". Is there anyway to suppress this since NAS Devices do not support Remote Agent Installations (I believe) ##

 

thanks a lot !

pkh's picture

When you rename a tape, essentially you have erased the tape.  All the information that is previously on the tape is gone as far as BE is concerned.  The only way to recover the information is by using a data recovery specialist which can be expensive.  Your rename/relabel job is probably queued behind your other jobs.

You cannot suppress the no remote agent error message.  You would just have to live with it.

SOLUTION
Mac1983's picture

Hi pkh

If i rename the tape - can i not re-run the Catalog service and Catalog the data thats contained in the Tape Media ?

thanks !

pkh's picture

You can catalog the tape but you will get nothing because when you label the tape, BE will also format the tape and erase the contents.  This is like when you format a disk, the data is physically on the disk but you cannot access them without the help of a data recovery specialist.

Larry Fine's picture

Did you run a "label" job or a "rename" job?  There is a big difference.

A "rename" job does not overwrite/erase the tape immediately, so if it ran AFTER your backup job was completed, then no harm was done.  A "rename" job actually affects the physical tape the next time it is overwritten/erased.  A "rename" job will not move a tape to a media set. 

An "erase" job after a backup would destory the restorability of that backup and move the tape to the Scratch set.

A "rename" job or a "label" job basically serves no purpose if you are using bar codes on your media, which is highly recomended.

If you find this is a solution for the thread, please mark it as such.

Mac1983's picture

Hi Larry and PKH.

 

Thanks for your response.

Larry - I am not sure I follow your post. I did try to Label the Media 'before' starting a backup job, but it got postponed and queued till after the backup started and completed because the timeframe between the 2 jobs was pretty small. 

I understand what went wrong here with regards to Labeling the media a bit too close to the scheduled backup job. I could not quiet find the place where you 'rename' the tapes instead of 'labelling' it (in the OP i meant 'Label Media' when i said 'rename').

Also - I am looking forward to put barcoding place in the future (if my Tape Device Supports it). Until then, I would like to continue labelling them.

 

(And Yes - I am sorted with the original issue so closing this post).

thanks !