Backup Central

Hello,

currently I backup to a storage system and copy it to a second one to
ensure, that if it breaks, I still have my vTapes on the second one.

Is it possible to configure Amanda to write backuped data to two
vTape-"Libraries" at the same time (the same data to two vTapes)?

Or does anybody have a better idea not to loose all backups if the storage
breaks down.

Regards,
Marc

On Thu, 30 Dec 2010 18:52:27 +0100
"Marc Muehlfeld" <Marc.Muehlfeld < at > medizinische-genetik.de> wrote:

Is it possible to configure Amanda to write backuped data to two
vTape-"Libraries" at the same time (the same data to two vTapes)?

Not that I know of.


Or does anybody have a better idea not to loose all backups if the
storage breaks down.

http://charlescurley.com/blog/articles/off_site_backups_for_amanda/index.html


--

Charles Curley /"\ ASCII Ribbon Campaign
Looking for fine software \ / Respect for open standards
and/or writing? X No HTML/RTF in email
http://www.charlescurley.com / \ No M$ Word docs in email

Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB

On 12/30/2010 09:52, Marc Muehlfeld wrote:
Hello,

currently I backup to a storage system and copy it to a second one to
ensure, that if it breaks, I still have my vTapes on the second one.

Is it possible to configure Amanda to write backuped data to two
vTape-"Libraries" at the same time (the same data to two vTapes)?

Or does anybody have a better idea not to loose all backups if the storage
breaks down.

Regards,
Marc


if the vtapes are the same sizes you can use rait. otherwise, there's
nothing that I know of either.

Hi

-----Original Message-----
From: owner-amanda-users < at > amanda.org
[mailto:owner-amanda-users < at > amanda.org] On Behalf Of Marc Muehlfeld
Sent: Thursday, December 30, 2010 6:52 PM
To: amanda-users < at > amanda.org
Subject: Backup the same data to two vTapes

Hello,

currently I backup to a storage system and copy it to a
second one to ensure, that if it breaks, I still have my
vTapes on the second one.

Is it possible to configure Amanda to write backuped data to
two vTape-"Libraries" at the same time (the same data to two vTapes)?

Or does anybody have a better idea not to loose all backups
if the storage breaks down.

Should that not be a function of the storage? It might be easier to
implement it there.

Regards

Erich

Hello,


Am 31.12.2010 10:19, schrieb Paul Bijnens:
Here is what I wrote about it a few years ago:

http://wiki.zmanda.com/index.php/How_To:Mirror_Dumps_to_Virtual_Tapes_and_Real_Tapes_using_RAIT

This seems to be a good solution. I'll try it.

But one question about it: What happens, if one of my storage is down during
backup? Is then the data written to the other one and kept in the holding disk
for flushing to later to the first one? How amanda handles this situation?


Regards,
Marc

On 2010-12-30 18:52, Marc Muehlfeld wrote:
currently I backup to a storage system and copy it to a second one to
ensure, that if it breaks, I still have my vTapes on the second one.

Is it possible to configure Amanda to write backuped data to two
vTape-"Libraries" at the same time (the same data to two vTapes)?

Here is what I wrote about it a few years ago:

http://wiki.zmanda.com/index.php/How_To:Mirror_Dumps_to_Virtual_Tapes_and_Real_Tapes_using_RAIT

However, the page could use some updates for the current version of Amanda.


--
Paul Bijnens, Xplanation Tel +32 16 397.525
Interleuvenlaan 86, B-3001 Leuven, BELGIUM Fax +32 16 397.552
***********************************************************************
* I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, ^^, *
* quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, ~., *
* stop, end, ^]c, +++ ATH, disconnect, halt, abort, hangup, KJOB, *
* ^X^X, :, kill -9 1, kill -1 $$, shutdown, init 0, Alt-F4, *
* Alt-f-e, Ctrl-Alt-Del, Alt-SysRq-reisub, Stop-A, AltGr-NumLock, ... *
* ... "Are you sure?" ... YES ... Phew ... I'm out *
***********************************************************************

On 2010-12-31 10:35, Marc Muehlfeld wrote:
Hello,


Am 31.12.2010 10:19, schrieb Paul Bijnens:
Here is what I wrote about it a few years ago:

http://wiki.zmanda.com/index.php/How_To:Mirror_Dumps_to_Virtual_Tapes_and_Real_Tapes_using_RAIT


This seems to be a good solution. I'll try it.

But one question about it: What happens, if one of my storage is down
during backup? Is then the data written to the other one and kept in the
holding disk for flushing to later to the first one? How amanda handles
this situation?

This explains some more about the RAIT, and the differences between RAID and RAIT:

http://wiki.zmanda.com/man/amanda-devices.7.html
(Section "RAIT Device")

and indeed, the handling of error-modes is different.
Unlike RAID, a RAIT will not automatically handle the failure of one of components.

A RAID system will continue functioning in a degraded state, while the RAIT device
will not write in a degraded state. It does allow reading in a degraded state, in order to support recoveries.
But you can of course change the tapedev string while the disksystem is being repaired, and continue
using Amanda.

--
Paul Bijnens, Xplanation Tel +32 16 397.525
Interleuvenlaan 86, B-3001 Leuven, BELGIUM Fax +32 16 397.552
***********************************************************************
* I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, ^^, *
* quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, ~., *
* stop, end, ^]c, +++ ATH, disconnect, halt, abort, hangup, KJOB, *
* ^X^X, :, kill -9 1, kill -1 $$, shutdown, init 0, Alt-F4, *
* Alt-f-e, Ctrl-Alt-Del, Alt-SysRq-reisub, Stop-A, AltGr-NumLock, ... *
* ... "Are you sure?" ... YES ... Phew ... I'm out *
***********************************************************************