Re: Backup the same data to two vTapes
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, XplanationTel +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, :D::D, kill -9 1, kill -1 $$, shutdown, init 0, Alt-F4, * * Alt-f-e, Ctrl-Alt-Del, Alt-SysRq-reisub, Stop-A, AltGr-NumLock, ... * * ... "Are you sure?" ... YES ... Phew ... I'm out * ***
Re: Backup the same data to two vTapes
On 2010-12-30 18:52, Marc Muehlfeld wrote: currently I backup to a storage system and copy it to a second one to ensure, that if it breaks, I still have my vTapes on the second one. Is it possible to configure Amanda to write backuped data to two vTape-"Libraries" at the same time (the same data to two vTapes)? Here is what I wrote about it a few years ago: http://wiki.zmanda.com/index.php/How_To:Mirror_Dumps_to_Virtual_Tapes_and_Real_Tapes_using_RAIT However, the page could use some updates for the current version of Amanda. -- Paul Bijnens, XplanationTel +32 16 397.525 Interleuvenlaan 86, B-3001 Leuven, BELGIUM Fax +32 16 397.552 *** * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, ^^, * * quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, ~., * * stop, end, ^]c, +++ ATH, disconnect, halt, abort, hangup, KJOB, * * ^X^X, :D::D, kill -9 1, kill -1 $$, 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 * ***
Re: Backup the same data to two vTapes
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
RE: Backup the same data to two vTapes
Hi > -Original Message- > From: [email protected] > [mailto:[email protected]] On Behalf Of Marc Muehlfeld > Sent: Thursday, December 30, 2010 6:52 PM > To: [email protected] > 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 smime.p7s Description: S/MIME cryptographic signature
Re: Backup the same data to two vTapes
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.
Re: Backup the same data to two vTapes
On Thu, 30 Dec 2010 18:52:27 +0100 "Marc Muehlfeld" 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
