Verify back-ups 1

[ingar]

Is there an option in legato to verify back-ups once they have completed?

a)If so how can I check that it is swittched on
b)How can I switch it on (if it is not on)

 

[graafdd]

If you find out please let me know,

Dennis de Graaf

 

[605]

The only time NW will automatically verify the data is when archiving (as he will just have one instance).

But you can recover the data to a temp directory to be check whether you can read tem. With a post-backup script you can even automate this.

 

[keefb]

Hi all,

The best way to verify the tapes is to use the scanner command:

scanner /dev/rmt/0cbn
scanner \\.\Tape0

This will scan the tape without restoring anything anywhere so you don't need loads of spare disk space.

Hope this helps.

Regards
KeefB

 

[sunixadm]

Is the server running on UNIX or Windblows?


I think what you want is Auto media verify:
If the Auto Media Verify attribute in the Pool dialog box is set to yes, NetWorker software verifies data written to volumes from this pool. Data is verified by repositioning the volume to read a portion of the data previously written to the media and comparing the data read to the original data written. If the data read matches the data written, verification succeeds; otherwise it fails. Media is verified whenever a volume becomes full while saving and it is necessary to continue onto another volume, or when a volume goes idle because all save sets being written to the volume are complete.

When a volume fails verification it is marked full so NetWorker software will not select the volume for future saves. The volume remains full until it is recycled or a user marks it not full. If a volume fails verification while attempting to switch volumes all save sets writing to the volume are terminated.

In the Windblows GUI:
Right click on the Pool to which your groups/clients are saving to, select edit, on the Preferences tab: set Auto media verify to yes and then click ok.

In the UNIX GUI:
Click Media, Pools. Scroll to Auto media verify. Select the "yes" radio button and then apply.

Hope this helps.

-Joe

 

[ingar]

Thanks for your input, that's what I was after

 

[605]

Auto media verify is an option but it does not check the whole backup data.

 

[spaceball]

Keep in mind that whenever You talk about backup veryfication in networker You're just talk about verify "what networker has written is what he has received (whithin the save-stream)". If the stream includes corrupt data, networker will save corrupt data and verify that the save was done fine. The data itself would not be analysed within networker. (how should networker do so??)
So the only -quiet paranoid- way is to restore the data and check the data by using the application it belongs to.

Regrads Thorsten