SV: Backups to disk and tape
>On Sat, Aug 9, 2008 at 9:22 AM, Peter Spikings <[EMAIL PROTECTED]> wrote: >> Is that possible? (because I can't see how from reading the man pages). >What you're asking about is called D2D2T, and Amanda doesn't support it directly just yet, although preliminary >support is a goal for the next release or so. >RAIT is the current best option. As long as you're mirroring, there's no problem with deleting a vtape after 7 >days. If you need to recover that data, you'll just retrieve the tape and use it directly. So a little bit of >shell wrapper can get you up and running with this scheme in no time. >I'd be interested to hear folks' high-level thoughts on how D2D2T (or, more generally, data migration) configuration should work in Amanda. >Should migration be a separate step from dumping (a la amflush)? >Should migration be scheduled somehow (and if so, with what sort of parameters), or should Amanda require explicit instructions on which dumps to migrate and when? We're still laying the low-level groundwork for migration, so there's lots of time to pontificate. One usage of data migrations is archiving which is being used and often implemented as separate config doing only 0 dumps. I think that migration should be done in similar way i.e. separated from dumping - ammigrating with it's own configuration, with parameters selecting images/tapes from amanda configurations. - config,host,disk,level,frequency - tape support Of course the is only one aspect of migrations but important one that would add much value to amanda. Gunnar Gunnarsson
Re: Backups to disk and tape
On Sat, Aug 9, 2008 at 9:22 AM, Peter Spikings <[EMAIL PROTECTED]> wrote: > Is that possible? (because I can't see how from reading the man pages). What you're asking about is called D2D2T, and Amanda doesn't support it directly just yet, although preliminary support is a goal for the next release or so. RAIT is the current best option. As long as you're mirroring, there's no problem with deleting a vtape after 7 days. If you need to recover that data, you'll just retrieve the tape and use it directly. So a little bit of shell wrapper can get you up and running with this scheme in no time. I'd be interested to hear folks' high-level thoughts on how D2D2T (or, more generally, data migration) configuration should work in Amanda. Should migration be a separate step from dumping (a la amflush)? Should migration be scheduled somehow (and if so, with what sort of parameters), or should Amanda require explicit instructions on which dumps to migrate and when? We're still laying the low-level groundwork for migration, so there's lots of time to pontificate. Dustin -- Storage Software Engineer http://www.zmanda.com
Backups to disk and tape
Hi all, I'm going to be setting up a new Amanda config with tapes going offsite. We're going to be using 30 tapes or so. As the tapes leave straight away after being written we want to keep copies of the data written to them on disk for (say) 7 days. I've looked into using RAIT to do this but wouldn't I then need enough diskspace to hold all the data on all the tapes? It strikes me that a good way to do this would be to allocate 7 tapes worth of space to the holding disk and have Amanda delete the older data when it needs to as Amanda can already restore from the holding disk. Is that possible? (because I can't see how from reading the man pages). Thanks, Peter. PS. Probably won't be able to respond until Monday! -- Peter Spikings Research & Development Software Developer Powergroup Two Four Nine, 249 Midsummer Boulevard, Central Milton Keynes, MK9 1EA t: 01908 605188 f: 01908 242099 e: [EMAIL PROTECTED] www.powergroup.co.uk www.powernet.co.uk www.powercorporate.co.uk Power Internet Limited Registered in England No: 3053650 Registered Address: Norfolk House Centre, 82 Saxon Gate West, Central Milton Keynes, Bucks, MK9 2DL Trading as "Powergroup", "Powernet", "Powercorporate" and "Powertelecom"
Re: Mixing backups to disk and tape?
I am interested quite a lot in making backups on two different media, like what you said disk and tape. In my case I would like to write my data on disk and disk, but with 800km between the 2 disk shelves. I don't think RAIT can handle this. And if there's no existing solution, I don't mind developing it from scratch. Is someone interested in coding it with me? On Wed, 22 Oct 2003 15:55:58 -0500 Frank Smith <[EMAIL PROTECTED]> wrote: > Since the list has been pretty quiet lately: > > Is there a (relatively) easy way of backing up to both disk and > tape from a single config? I was thinking of using the file driver > to do backups to disk (for faster recoveries) while also using > tapes (for archiving and offsite purposes). > > Options I've considered: > > Just using the file driver and then dd'ing those to tape later. > But since I couldn't keep as many file 'tapes' around as I would > keep tapes, how would I handle recoveries of older data? Just > delete the file 'tapes' as needed, and to do a restore, first > dd the tape back to the properly named file? > > Using the RAIT driver (does it still exist?) to mirror a backup > between disk and file? How would a restore work in this case; > would Amanda expect both tape and file to be present? Could > a changer script handle the two diferent mediums? > > Two configs. It would double the backup window and I"m soaking > some WAN links too long already. > > Something else? > > My idea is to somehow use the file driver to keep a couple of > dumpcycle's worth of backups on disk, but to also have a > tapecycle's worth of tapes (which is many times dumpcycle). > Anybody tried anything similar? > > Frank > > -- > Frank Smith [EMAIL PROTECTED] > Systems Administrator Voice: 512-374-4673 > Hoover's Online Fax: 512-374-4501
Mixing backups to disk and tape?
Since the list has been pretty quiet lately: Is there a (relatively) easy way of backing up to both disk and tape from a single config? I was thinking of using the file driver to do backups to disk (for faster recoveries) while also using tapes (for archiving and offsite purposes). Options I've considered: Just using the file driver and then dd'ing those to tape later. But since I couldn't keep as many file 'tapes' around as I would keep tapes, how would I handle recoveries of older data? Just delete the file 'tapes' as needed, and to do a restore, first dd the tape back to the properly named file? Using the RAIT driver (does it still exist?) to mirror a backup between disk and file? How would a restore work in this case; would Amanda expect both tape and file to be present? Could a changer script handle the two diferent mediums? Two configs. It would double the backup window and I"m soaking some WAN links too long already. Something else? My idea is to somehow use the file driver to keep a couple of dumpcycle's worth of backups on disk, but to also have a tapecycle's worth of tapes (which is many times dumpcycle). Anybody tried anything similar? Frank -- Frank Smith [EMAIL PROTECTED] Systems Administrator Voice: 512-374-4673 Hoover's Online Fax: 512-374-4501
