Incremental Backup Restore Question

[systematic92]

Guys,

Please see my screenshot.

My backup schedule is as follows:

- Full Friday (be it weekly, monthly or annual)

- Daily Incrementals from Monday - Thursday

These are all NDMP backups.

If you look at my screenshot, you will see the first line highlighted, which is "Daily Incremental - Wednesday".

If in future, I wanted to restore some data from this Wednesday, what tapes would I need?

I thought Incremental restores were the day you need PLUS the last full backup (every Friday) - is that correct?

The reason I ask is because I cannot see a FULL job completed for the attached task. So I don't get how it will do a restore?

Thanks,

[pkh]

NDMP technology is the same for all backup products. The same NDMP facilities are used so that document will apply to BE as well

[sk7777]

PKH - With Respect , we are not suppose to troubleshoot other products issue here. 

[pkh]

Nobody is a asking you to troubleshoot any other software. If you read the document carefully, it is a description of how NDMP dump and restore works, and it applies equally to BE since BE invokes NDMP. Can you restore Level 1 with BE without restoring Level 0?

[sk7777]

Pkh - Dont go in generic terms..for your information -  I suppose you are troubleshooting/giving inputs to Netvault NDMP backup issue here

Anyways coming to question - Can you restore Level 1 with BE without restoring Level 0?

Answer is Not possible. 

My Question - How Can NDMP Incr backup ( Level 1) will be successful if Full ( Level 0 ) failed ? 

Any Inputs my friend... 

[systematic92]

So is the following true:

Since these are NDMP backups. 

Your immediate Incremental Backup from Week2 will be equal to full backup and will contain all files since there is a failed Week2 FULL backup.

For Testing Purpose, goto reports -> run Media Required for Recovery report and select the files you want to restore. It will show which media you require. 

The week 2 full has failed, which means  when the Monday incremental starts, it presumably backs up all changes since the last full, which would have been week 1 full.

If I now had to restore a file from Wednesday Incremental Week 2 - what tapes would I need?

Since the level 0 backup failed, I am assuming, I would need:

Wednesday Tape (3rd incremental - level 3), Tuesday Tape (2nd incremental - level 2) and Monday Tape (1st incremental - level 1).

Or will it be more tapes?

I am just trying to wrap my head around this.

[pkh]

I suppose you are troubleshooting/giving inputs to Netvault NDMP backup issue here

What am I suppose to input to them?  That their document is correct and BE works the same way.

My Question - How Can NDMP Incr backup ( Level 1) will be successful if Full ( Level 0 ) failed ? 

If this did not happen, why is there this discussion? Do examine the screenshots in the initial post CAREFULLY.

[pkh]

You are clutching at straws to avoid rerunning your failed full backup.  Isn't it obvious that your second week backups are useless without a full backup?  If you choose to mix-and-match backups from different weeks and end up in a mess, you would only have yourself to blame.

[systematic92]

.

[systematic92]

The main issue is that some of our full backups take over 24 hours to complete (due to file scanning mainly). 

Say if my full weekly fails and I re-ran it on Monday, what would happen to my incremental that is also scheduled for Monday at 18:30? Would it run or not? If it ran, what changes would it be backing up GIVEN that the full is still running?

[sk7777]

Well, 

Why dont you start the same thread under NetVault Support Forum or Check with Netvault Support.. 

if you got issues with Netvault NDMP Backups ...