[Bacula-users] Is that ok using Bacula to write on DVDs?
Hi guys, First of all, excuse my English. I'm newbie with Bacula and I don't have any condition to backup my data using tapes. I must use DVDs... Is that ok using Bacula to write on DVDs? What you suggest? []'s Alexander Brazil - Rio de Janeiro This message was sent using IMP, the Internet Messaging Program. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
On Tue, May 5, 2009 at 10:35 AM, wrote: > Hi guys, > > First of all, excuse my English. > > I'm newbie with Bacula and I don't have any condition to backup my > data using tapes. > > I must use DVDs... > > Is that ok using Bacula to write on DVDs? > > What you suggest? > This does not work 100% of the time out of the box. I would suggest writing 4.5GB disk volumes then using your favorite dvd burning software to offload the disk images to dvd. John -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> This does not work 100% of the time out of the box. I would suggest > writing 4.5GB disk volumes then using your favorite dvd burning > software to offload the disk images to dvd. > John >> First of all, excuse my English. So... let me try to understand: If I write 4.5GB disk volumes (in a incremental way), the volume will update only the modifications, is that right? Because it's a incremental backup (what I want). It won't write incremental pieces on the disk, instead, it will write incremental pieces on the volume and for me, it will be just one big piece to write on DVD. It won't be possible to do incremental writings on DVD, is that right? How can I write only the files changes on the DVD (like was possible if I would use scripts + tar + growisofs)? []'s Alexander Brazil - Rio de Janeiro This message was sent using IMP, the Internet Messaging Program. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
On Tue, May 5, 2009 at 1:35 PM, wrote: >> This does not work 100% of the time out of the box. I would suggest >> writing 4.5GB disk volumes then using your favorite dvd burning >> software to offload the disk images to dvd. >> John >>> >>> First of all, excuse my English. > > So... let me try to understand: > > If I write 4.5GB disk volumes (in a incremental way), the volume will update > only the modifications, is that right? Because it's a incremental backup > (what I want). It won't write incremental pieces on the disk, instead, it > will write incremental pieces on the volume and for me, it will be just one > big piece to write on DVD. > > It won't be possible to do incremental writings on DVD, is that right? > You can try. The reason why I recommend this method is that DVD writing with bacula can be considered beta quality at best. I can almost guarantee you will have some problems and unless you are a linux expert it probably not be a good experience. Check the email archives. > > How can I write only the files changes on the DVD (like was possible if I > would use scripts + tar + growisofs)? > John -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
alexan...@nautae.eti.br wrote: > Hi guys, > > First of all, excuse my English. > > I'm newbie with Bacula and I don't have any condition to backup my > data using tapes. > > I must use DVDs... > > Is that ok using Bacula to write on DVDs? > > What you suggest? > > []'s > Alexander > Brazil - Rio de Janeiro > Hi Alexander, I can only subscribe to John comment & recommandation. You certainly would have a better experience with pool on disk even on removable usb disk There's not so expensive this days. -- Bruno Friedmann -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> I can only subscribe to John comment & recommandation. > You certainly would have a better experience with pool on disk even > on removable usb disk > There's not so expensive this days. Ok, I gave up of doing DVD writing by Bacula. I'll use disk volumes and burn the DVD after that. I'm not confident about using removable usb disk because it's not a safe made media. Of course DVD too, but I think DVDs are more reliable than usb disk, there isn't electricity to read the data. What do you think? If you don't have a tape device and need something reliable, what solution would you use? []'s Alexander Brazil - Rio de Janeiro This message was sent using IMP, the Internet Messaging Program. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
alexan...@nautae.eti.br wrote: >> I can only subscribe to John comment & recommandation. >> You certainly would have a better experience with pool on disk even on >> removable usb disk >> There's not so expensive this days. > > Ok, I gave up of doing DVD writing by Bacula. > > I'll use disk volumes and burn the DVD after that. > > I'm not confident about using removable usb disk because it's not a safe > made media. Of course DVD too, but I think DVDs are more reliable than > usb disk, there isn't electricity to read the data. > > What do you think? > > If you don't have a tape device and need something reliable, what > solution would you use? > > []'s > Alexander > Brazil - Rio de Janeiro > Over the past 5 years I'm using removable media in fact it's normal disk plugged into a usb adpater which support 2'5 and 3'5 disk. I've a pata version and now a sata. You're right on the reliable facts. My process include a double format with ext3 (for the moment) with check bad sectors. After that at minimal there's a read test on the media twice a years. For archival process, I'm in the way of constant migration (that's would said I'm migrating the data from media to other media) cd or dvd if written at high-speed have tendancy to become unreadable or loose some bits of data after 5 to 10 years. So my backups/archival data are moving (started long time ago with TR-4 travan tapes to dds 3 & 4, to disks) To my opinion (and my volume of data for an overall +- 4TB ) disks are the most simple/cheaper pro GB : there's no need to have another mechanical systems to get my data. I have to observe when I need to move from one tech to another ( pata -> sata for example ) It take less place in the safe at the bank. Oh there's another point, I always keep the data on a second drive ( different manuf. ) at another location too. The choice of technology are very subject to change. I know that some of bacula users have to use library due to the volume of data they need to save. But if you firstly thing about DVD I don't thing you have such needs ;-) -- Bruno Friedmann Ioda-Net Sàrl 2830 Vellerat - Switzerland Tél : ++41 32 435 7171 Fax : ++41 32 435 7172 gsm : ++41 78 802 6760 www.ioda-net.ch Centre de Formation et de Coaching En Ligne www.cfcel.com -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> Hi guys, > > First of all, excuse my English. > > I'm newbie with Bacula and I don't have any condition to > backup my > data using tapes. > > I must use DVDs... > > Is that ok using Bacula to write on DVDs? > > What you suggest? > I use Bacula 2.0.2 and with it DVD seems to work mostly good. Only exception to that has been for me a crash during backup. The data was not written to the Catalog database, but the data written was in the spool directory. Bacula counts the data in the DVD + in the data in the spool directory, and complains when that does not match with Catalog. The next job after crash: The Media goes to error state and job fails. Solution: delete all files from spool folder, set the Media to Append (if in Error state) and it works again! DVD is not a solution for a corporation, but ok for a (set of) home server(s). -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> > I use Bacula 2.0.2 and with it DVD seems to work mostly I forgot to mention, that I use 2.0.2 because current versions do not work with DVD at all. 2.0.2 does. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> On Tue, 05 May 2009 13:15:39 -0600, alexan...@nautae.eti.br said: a> Ok, I gave up of doing DVD writing by Bacula. FYI, I've been doing it for 2 years or so; once it was up and running it works fairly well. I do save the parts to a separate folder after writing them to the DVD just to make sure, but most of the time they just get deleted. Occasionally an older disk will fail to burn properly and I either need to hard-burn the parts (again) to the disk or simply mark the disk as bad in the pool and let bacula recover based on that knowledge. a> I'm not confident about using removable usb disk because it's not a a> safe made media. Of course DVD too, but I think DVDs are more reliable a> than usb disk, there isn't electricity to read the data. DVDs are likely less reliable than any form of external disk. That being said, external disks are still more than a stack of DVDs. Eventually you'll spend as much as an external disk though. DVDs don't handle writing to them a huge number of times, so eventually they go bad and need to be thrown away (eventually just from scratches, no matter *how* careful I try to be). The biggest problem in my book is that I don't want the external disk spinning while I'm awake for noise reasons; I'd need a power-up/down before/after the backup. -- "In the bathtub of history the truth is harder to hold than the soap, and much more difficult to find." -- Terry Pratchett -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> a> Ok, I gave up of doing DVD writing by Bacula. > FYI, I've been doing it for 2 years or so; once it was up and running > it works fairly well. Good to know. In fact I just gave up for a moment. I have to replace my backup script, and it have to be a professional solution, so that another guy won't need to learn about my personal script, for example if I die or get fired. > a> I'm not confident about using removable usb disk because it's not a > a> safe made media. Of course DVD too, but I think DVDs are more reliable > a> than usb disk, there isn't electricity to read the data. > DVDs are likely less reliable than any form of external disk. Are you sure about that? I'm not using DVD-RW, just DVD-R. I burn a huge amount of DVD-R for the full backup (every six month) and one DVD-R per week for the incremental backup (the DVD is burned daily and at Friday I replace the media). I feel more comfortable knowing that DVD-R doesn't use electricity to read the data. Ok, tape does, but tapes are made to safe data storage. DVDs are made to mass data distribution. USB data sticks are made just to move data from a place to another. These two cases are less reliable in its concepts, but I think because DVDs doesn't use electricity or any other mechanical/electronic stuff, they can be more reliable. I really don't know. If you have a strong argument in favor of USB data sticks, please, tell me, burning DVDs is a terrible boring task. []'s Alexander Brazil - Rio de Janeiro This message was sent using IMP, the Internet Messaging Program. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
alexan...@nautae.eti.br wrote: >> a> Ok, I gave up of doing DVD writing by Bacula. >> FYI, I've been doing it for 2 years or so; once it was up and running >> it works fairly well. > > Good to know. In fact I just gave up for a moment. I have to replace my > backup script, and it have to be a professional solution, so that > another guy won't need to learn about my personal script, for example if > I die or get fired. > > >> a> I'm not confident about using removable usb disk because it's not a >> a> safe made media. Of course DVD too, but I think DVDs are more reliable >> a> than usb disk, there isn't electricity to read the data. >> DVDs are likely less reliable than any form of external disk. > > Are you sure about that? > > I'm not using DVD-RW, just DVD-R. > > I burn a huge amount of DVD-R for the full backup (every six month) and > one DVD-R per week for the incremental backup (the DVD is burned daily > and at Friday I replace the media). > > I feel more comfortable knowing that DVD-R doesn't use electricity to > read the data. > > Ok, tape does, but tapes are made to safe data storage. > > DVDs are made to mass data distribution. USB data sticks are made just > to move data from a place to another. > > These two cases are less reliable in its concepts, but I think because > DVDs doesn't use electricity or any other mechanical/electronic stuff, > they can be more reliable. Sorry but to read or write dvd you need electric & mechanicals devices. What about to write thousand dvd with a drive having a defective laser, that could only be detected when the dvd reading is try on another drive. > > I really don't know. If you have a strong argument in favor of USB data > sticks, please, tell me, burning DVDs is a terrible boring task. I don't speak about usb stick (really usb stick suck most of the time and have a limited number of write ) I'm speaking about real hardrive but connected with usb2 ( hotplug, easy, reliable ) most of time 3 to 5 years warranty and take little place. Even more most off them could run aes256 encryption (which is needed if exported outside) like this one http://www.maxtor.com/en/hard-drive-backup/external-drives/maxtor-onetouch-4-mini.html just usb powered no external surge, doesn't take place and are very quiet with energy efficient (sleep & wake up) 500Go is around 106 DVD : sure it would take more place than one disk :-) (don't forget the dvd drive also ...) But the most important is to said that external disks concept is easy to setup with bacula. DVD has some trouble with the lastest version ( As previously mentionned on the thread ) After it's a choice of taste & colors :-) Just try to use what you feel most comfortable with, or can . ( With DVD I have to wake up 3 times by night to store the daily backup ... And blue-ray is just too much expensive like tape. So I choose harddrive, and yes server are not in my sleeping room :-))) ) > > []'s > Alexander > Brazil - Rio de Janeiro > > > This message was sent using IMP, the Internet Messaging Program. ps : could you please reply only to the mailing list ? -- Bruno Friedmann -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, years ago I did use DVD's for backups. However, I used DVD RAMs which you can use like a HDD. There are 2 problems with this: 1) it is SLOW 2) you run into problems if you need more than 1 DVD - From a technical viewpoint you can solve (2) with some autochanger scripts like: - show message that DVD is full - eject it - wait for a new DVD - then continue Well, unless you are in charge of the backup you will never get other people to reliably change DVD's. Once you need 4-5 DVD's you are busy with checking DVD for most of the day. The solution was to get a 1 TB USB drive (for bit more than 100 USD). Cheers, Bernd On Wed, 06 May 2009 06:14:27 + bacula-users-requ...@lists.sourceforge.net wrote: > Message: 18 > Date: Tue, 05 May 2009 13:15:39 -0600 > From: alexan...@nautae.eti.br > Subject: Re: [Bacula-users] Is that ok using Bacula to write on DVDs? > To: Bruno Friedmann > Cc: bacula-users@lists.sourceforge.net > Message-ID: <20090505131539.676210t4zeggq...@www.nautae.eti.br> > Content-Type: text/plain; charset=UTF-8; DelSp="Yes";format="flowed" > > > I can only subscribe to John comment & recommandation. > > You certainly would have a better experience with pool on disk even > > on removable usb disk > > There's not so expensive this days. > > Ok, I gave up of doing DVD writing by Bacula. > > I'll use disk volumes and burn the DVD after that. > > I'm not confident about using removable usb disk because it's not a > safe made media. Of course DVD too, but I think DVDs are more reliable > than usb disk, there isn't electricity to read the data. > > What do you think? > > If you don't have a tape device and need something reliable, what > solution would you use? > > []'s > Alexander - -- Bernd Plagge - プラゲ ベェアント First Choice Internet Ltd., Tokyo - ファースト・チョイス・インターネット(有) -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkoC/tgACgkQpYU8M8PbPV6FzACgiJgDGdl5uN06hqgn3LIi+C9m EHQAoJSxTKKyOyz44QxlEusAFljDP4D5 =fJ+M -END PGP SIGNATURE- -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> On Wed, 06 May 2009 12:16:49 -0600, alexan...@nautae.eti.br said: >> DVDs are likely less reliable than any form of external disk. a> Are you sure about that? a> I'm not using DVD-RW, just DVD-R. Ah, I didn't realize that. I had been assuming that you were rewriting existing disks. DVD-R's are much better for longevity (I believe) than DVD-RWs. That being said, the recently shown life expectancy of a DVD-R is somewhere on the order of 5 years. [Though I don't know what percentage of failure they're using to define that timing mark] You might consider re-reading the disk, at least, immediately after burning and comparing the checksum of the volume to the checksum written to the disk to ensure their the same. That'd provide a lot more confidence. a> DVDs are made to mass data distribution. USB data sticks are made just a> to move data from a place to another. Well, I was assuming a hard drive and not a USB stick. In theory, I'd actually trust solid state drives better (like USB drives) more than disks or DVDs because there are less moving parts. -- "In the bathtub of history the truth is harder to hold than the soap, and much more difficult to find." -- Terry Pratchett -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
Wes Hardaker wrote: >> On Wed, 06 May 2009 12:16:49 -0600, alexan...@nautae.eti.br said: >> > > >>> DVDs are likely less reliable than any form of external disk. >>> > > a> Are you sure about that? > > a> I'm not using DVD-RW, just DVD-R. > > Ah, I didn't realize that. I had been assuming that you were rewriting > existing disks. > > DVD-R's are much better for longevity (I believe) than DVD-RWs. That > being said, the recently shown life expectancy of a DVD-R is somewhere > on the order of 5 years. [Though I don't know what percentage of failure > they're using to define that timing mark] > I believe this is actually very old data going back to the earlier CD days. It wasn't so much research-based but empirical; they found that stains had formed within the material itself and the plastic had developed cracks (similar to aircraft windows). These problems are actually supposed to have been resolved with improved media. Still, 5 years is probably a good number to go with unless we have better data. > In theory, I'd actually trust solid state drives better (like USB > drives) more than disks or DVDs because there are less moving parts. > In theory. USB sticks actually can wear out pretty fast. An individual flash memory cell only survives approximately 100,000 write cycles, which is not a lot if you think about it. Solid state disks are more reliable because they use redundancy and are able to detect and replace failed memory cells. That's why I would probably trust a DVD more than solid-state. Ultimately, though, all media fails. Tapes wear out, too. -- Kevin Keane Owner The NetTech Find the Uncommon: Expert Solutions for a Network You Never Have to Think About Office: 866-642-7116 http://www.4nettech.com This e-mail and attachments, if any, may contain confidential and/or proprietary information. Please be advised that the unauthorized use or disclosure of the information is strictly prohibited. The information herein is intended only for use by the intended recipient(s) named above. If you have received this transmission in error, please notify the sender immediately and permanently delete the e-mail and any copies, printouts or attachments thereof. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> In theory. USB sticks actually can wear out pretty fast. An individual > flash memory cell only survives approximately 100,000 write cycles, > which is not a lot if you think about it. Solid state disks are more > reliable because they use redundancy and are able to detect and replace > failed memory cells. > All current USB sticks should have wear leveling and between 100,000 to 1,000,000 writes per cell. Depending on the size this may mean 5 years or more of continuous writing to burn it out since the interface is limited at less than 40 MB/s. John -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
> reliable because they use redundancy and are able to detect and replace > failed memory cells. > That's why I would probably trust a DVD more than solid-state. > Ultimately, though, all media fails. Tapes wear out, too. I don't know about solid-state devices. But I think if I can make a safe write on a DVD-R (comparing the checksum) probably I won't have to worry about the media for one or two years. Using a disk... If something is wrong with the electronic device, my read after two years can destroy everything in one single step. Of course If I have a laser problem on DVD device... but have you ever noticed about a laser problem that had destroyed an -> already <- written DVD media when you just want to -> read <- data? I think DVDs is really reliable to keep data readable (one or two years, wherever), but not to write. And disks is more reliable to write and not to read. Of course what I'm saying is about a -> crash <- at the restore moment, not a misunderstood byte or something. Normally I have to scratch a DVD-R on the wall or write wrong data to destroy my day at a restore moment. If I use a disk... I think it will always be a stressed restore moment. DVD-R just seems to be like a piece of paper, extremely fragile, but extremely simple. But, of course, I'm not a specialist, I don't know if a solid-state is more simple than a burned piece of plastic. I'm really enjoying this discussion. I hope I'm not insisting on a redundant discussion. Sorry if it's the case. []'s Alexander Brazil - Rio de Janeiro This message was sent using IMP, the Internet Messaging Program. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Is that ok using Bacula to write on DVDs?
alexan...@nautae.eti.br wrote: >> reliable because they use redundancy and are able to detect and replace >> failed memory cells. >> That's why I would probably trust a DVD more than solid-state. >> Ultimately, though, all media fails. Tapes wear out, too. > > I don't know about solid-state devices. > > But I think if I can make a safe write on a DVD-R (comparing the > checksum) probably I won't have to worry about the media for one or > two years. > > Using a disk... If something is wrong with the electronic device, my > read after two years can destroy everything in one single step. > > Of course If I have a laser problem on DVD device... but have you ever > noticed about a laser problem that had destroyed an -> already <- > written DVD media when you just want to -> read <- data? > > I think DVDs is really reliable to keep data readable (one or two > years, wherever), but not to write. And disks is more reliable to > write and not to read. > > Of course what I'm saying is about a -> crash <- at the restore > moment, not a misunderstood byte or something. > > Normally I have to scratch a DVD-R on the wall or write wrong data to > destroy my day at a restore moment. If I use a disk... I think it will > always be a stressed restore moment. > > DVD-R just seems to be like a piece of paper, extremely fragile, but > extremely simple. > > But, of course, I'm not a specialist, I don't know if a solid-state is > more simple than a burned piece of plastic. > > I'm really enjoying this discussion. I hope I'm not insisting on a > redundant discussion. Sorry if it's the case. > > []'s > Alexander > Brazil - Rio de Janeiro > Well, when I need a restore ( I've always my data at twice device at the same time ) you could always mount the disk RO so there's no chance to destroy something. Backup disks on my place are estimated to be used 3 to 5 years ( always under the manuf. warranty ) I've always a double of the data written on it, and those devices are store at different place. Just in case of. I check frequently what devices has the best ration Place/Price to have the best price pro TB in a sum of what I need to store following my GFS rotation. But with 480GB per week I don't want to burn DVD :-) -- Bruno Friedmann -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
