DDS3 backup solution

[Hoang Minh Tuan]

Hi all,

I has a case in which I have to give out a solution to backup data from HDD to DDS3 tape.
I have a file system with 3GB and want to do a full backup to DDS3 tape (12GB) weekly, but I also want to do a full backup of this file system of other weeks to this tape to save the tape quantity so that I can take approximately 4 times full backup in one tape (4x3GB=12GB) and of course, the data of a week does not overwrite the one of other weeks .
Could anyone introduce backup mechanisms to meet this requirement. As I dimly know, vxdump can do this situation so someone can introduce more detail or have scripts to help me this case.

Highly appriciate your help.
HMT

[MarkSyder]

Data Protector (formerly known as Omniback) will append backups to a tape.

Mark Syder (like the drink but spelt different)

[Hoang Minh Tuan]

I know this mechanism but dont want to install a type of third party products. As I said, I really need the mechanisms like vxdump or fbackup. Are you able to help me with this mechanism.
Anyway, thanks for your response

[Sunil Sharma_1]

You can use vxdump but it involves some more commands to be run before vxdump. If you want to use same cartridge which use once you have to run mt command to move tape to next count.

mt -f /dev/rmt/0mn fsf 1

then run vxdump to take backup.

sunil

[Leif Halvarsson_2]

Hi,

Appending backups to a media without using a "real" backup software is very tricky. If you don't want to spend mony on e.g. Data Protector Single server edition I belive it is better to use one media per backup.

[Hoang Minh Tuan]

Thank Sunnil, Leif for your advice.
I think Sunnil's advice is highly feasible. It means that I have to do some commands like:
At the first time:
mt -t /dev/rmt/0mn fsf 1
vxdump -0[options] /dev/rmt/0mn /filesytem
At the second time:
mt -t /dev/rmt/0mn fsf 2
vxdump -0[options] /dev/rmt/0mn /filesytem
and so on.

Do you think it 's correct?

[Sunil Sharma_1 · Accepted solution]

Hi,

It's very much possible I was using this for adhoc backup.

Sunil