Re: Improving disk reliability

2008-01-09 Thread knitti
On 1/9/08, NetOne - Doichin Dokov [EMAIL PROTECTED] wrote: Bacula (www.bacula.org) is your friend. yes, bacula is great. I just discovered, that it is in ports (even as package available), so I have to use it on OpenBSD yet, but it can't be harder to set up than on other platforms. I prefer it

Re: Improving disk reliability

2008-01-08 Thread Nick Guenther
On Jan 7, 2008 7:22 AM, knitti [EMAIL PROTECTED] wrote: On 1/4/08, Nick Guenther [EMAIL PROTECTED] wrote: How would you verify the whole disk is readable? And if it's all readable, how do you ensure the data is still the same pattern you put on before? the posting von hannah shows what to

Re: Improving disk reliability

2008-01-08 Thread Khalid Schofield
On 8 Jan 2008, at 08:08, Nick Guenther wrote: On Jan 7, 2008 7:22 AM, knitti [EMAIL PROTECTED] wrote: On 1/4/08, Nick Guenther [EMAIL PROTECTED] wrote: How would you verify the whole disk is readable? And if it's all readable, how do you ensure the data is still the same pattern you put on

Re: Improving disk reliability

2008-01-08 Thread Douglas A. Tutty
On Tue, Jan 08, 2008 at 09:48:03AM +, Khalid Schofield wrote: On 8 Jan 2008, at 08:08, Nick Guenther wrote: On Jan 7, 2008 7:22 AM, knitti [EMAIL PROTECTED] wrote: the posting von hannah shows what to do. Ths big picture is this: Backup (and/or archiving) is not fire-and-forget. You have

Re: Improving disk reliability

2008-01-08 Thread Henning Brauer
* Douglas A. Tutty [EMAIL PROTECTED] [2008-01-08 15:33]: I'm seriously looking into getting a tape drive but, of course, I can't afford a new one. I'll see what I can get on the commercial-used market (not eBay) with a bit of a waranty (beyond DOA). Right now, it would be connected to my

Re: Improving disk reliability

2008-01-08 Thread Douglas A. Tutty
On Tue, Jan 08, 2008 at 03:37:36PM +0100, Henning Brauer wrote: I know that the FAQ says to just use dump to make backups but what if you want a tape of a specific group of files for archiving? When last did the dump format change? Since it reads the filesystem directly, I'd assume

Re: Improving disk reliability

2008-01-08 Thread johan beisser
On Jan 8, 2008, at 6:29 AM, Douglas A. Tutty wrote: I know that the FAQ says to just use dump to make backups but what if you want a tape of a specific group of files for archiving? When last did the dump format change? Since it reads the filesystem directly, I'd assume that its

Re: Improving disk reliability

2008-01-08 Thread johan beisser
On Jan 8, 2008, at 7:29 AM, Douglas A. Tutty wrote: However, if you have one directory you wish to put on tape, e.g. as an archive of old OS .iso's (in case the origionals get scratched), as far as I know, you can't use dump (which is only for entire filesystems). Or, is there any reason

Re: Improving disk reliability

2008-01-08 Thread Stuart Henderson
On 2008/01/08 10:29, Douglas A. Tutty wrote: However, if you have one directory you wish to put on tape, e.g. as an archive of old OS .iso's (in case the origionals get scratched), as far as I know, you can't use dump (which is only for entire filesystems). dump(8) manual says:

Re: Improving disk reliability

2008-01-08 Thread Henning Brauer
* Douglas A. Tutty [EMAIL PROTECTED] [2008-01-08 17:31]: On Tue, Jan 08, 2008 at 03:37:36PM +0100, Henning Brauer wrote: I know that the FAQ says to just use dump to make backups but what if you want a tape of a specific group of files for archiving? When last did the dump format

Re: Improving disk reliability

2008-01-08 Thread Douglas A. Tutty
On Tue, Jan 08, 2008 at 04:42:59PM +, Stuart Henderson wrote: On 2008/01/08 10:29, Douglas A. Tutty wrote: However, if you have one directory you wish to put on tape, e.g. as an archive of old OS .iso's (in case the origionals get scratched), as far as I know, you can't use dump (which

Re: Improving disk reliability

2008-01-08 Thread Douglas A. Tutty
On Jan 8, 2008, at 6:29 AM, Douglas A. Tutty wrote: I know that the FAQ says to just use dump to make backups but what if you want a tape of a specific group of files for archiving? When last did the dump format change? Since it reads the filesystem directly, I'd assume that its

Re: Improving disk reliability

2008-01-08 Thread NetOne - Doichin Dokov
Douglas A. Tutty ??: On Jan 8, 2008, at 6:29 AM, Douglas A. Tutty wrote: I know that the FAQ says to just use dump to make backups but what if you want a tape of a specific group of files for archiving? When last did the dump format change? Since it reads the filesystem directly,

Re: Improving disk reliability

2008-01-08 Thread johan beisser
On Jan 8, 2008, at 1:15 PM, Douglas A. Tutty wrote: Well, right now, I just do full backups. Incrementals get rather tedius. Especially since they find new files but they don't notice a file that has been deleted. So I don't need a list of what files are in which tarball but rather just

Re: Improving disk reliability

2008-01-08 Thread Douglas A. Tutty
On Tue, Jan 08, 2008 at 06:25:44PM -0800, johan beisser wrote: For a little while, I've had a project on my plate to create a simple backup system that'd use rsync to mirror the directory for easy access, and then have versions going back X-months that can be archived to tape, etc,

Re: Improving disk reliability

2008-01-07 Thread knitti
On 1/4/08, Nick Guenther [EMAIL PROTECTED] wrote: On 1/3/08, knitti [EMAIL PROTECTED] wrote: this is becoming OT, but I can't recommend storing HDDs as real backup solution either. HDDs _do_ have bitrot, and one should at least, say, once a year, verify that the *whole* disk is readable,

Re: Improving disk reliability

2008-01-07 Thread Douglas A. Tutty
On Mon, Jan 07, 2008 at 01:22:53PM +0100, knitti wrote: Backup (and/or archiving) is not fire-and-forget. You have to know how long you want to store this data to choose the right technology and media. And you have to have a process to verify that your data is good after this time. If you want

Re: Improving disk reliability

2008-01-04 Thread Craig Skinner
On Thu, Jan 03, 2008 at 01:29:38AM +0100, Erik Wikstr??m wrote: file-server which will contain stuff with some emotional value, data- loss. Houses burn. Dump/tar scp/ftp offsite to your box or web space.

Re: Improving disk reliability

2008-01-04 Thread Henning Brauer
* Douglas A. Tutty [EMAIL PROTECTED] [2008-01-04 03:55]: I thought that there was a trend in the industry away from tapes toward hard-drive-based systems, e.g. virtual tape libraries that are basically large file servers with far more capacity than throughput. yes, because decision makers tend

Re: Improving disk reliability

2008-01-04 Thread Hannah Schroeter
Hi! On Fri, Jan 04, 2008 at 02:47:11AM -0500, Nick Guenther wrote: On 1/3/08, knitti [EMAIL PROTECTED] wrote: On 1/3/08, Marius Hooge [EMAIL PROTECTED] wrote: I personally don't recommend backups to CD/DVD. They degenerate rather quickly depending on their quality and the storage

Re: Improving disk reliability

2008-01-04 Thread chefren
On 1/3/08 11:35 PM, Douglas A. Tutty wrote: On Thu, Jan 03, 2008 at 05:10:59PM +0100, knitti wrote: .. this is becoming OT, but I can't recommend storing HDDs as real backup solution either. HDDs _do_ have bitrot, and one should at least, say, once a year, verify that the *whole* disk is

Re: Improving disk reliability

2008-01-04 Thread Douglas A. Tutty
On Thu, Jan 03, 2008 at 11:40:44PM -0800, Ted Unangst wrote: On 1/3/08, Douglas A. Tutty [EMAIL PROTECTED] wrote: I thought that there was a trend in the industry away from tapes toward hard-drive-based systems, e.g. virtual tape libraries that are basically large file servers with far more

Re: Improving disk reliability

2008-01-04 Thread chefren
On 1/4/08 6:22 PM, Douglas A. Tutty wrote: How well do tapes written with one drive read on another? Good, provide you use serious designed tape drives. Presuably, drives don't last for 30 years. .. How robust are the drives? How well do they age? It's difficult to speak for other

Re: Improving disk reliability

2008-01-03 Thread Jens Teglhus Møller
On Thu, January 3, 2008 07:58, Peter N. M. Hansteen wrote: ... snip With any kind of reasonable Internet access, rsync to another machine is extremely easy to set up and maintain, and once the initial duplication of all data is done the periodic (say once or twice a day) transfer is almost not

Re: Improving disk reliability

2008-01-03 Thread Marius Hooge
Doug wrote: 2. I don't know the size of the disk to know the size of the backup media required. However, CD/DVD burners are less than the cost of a hard drive and the media is relatively cheap. I personally don't recommend backups to CD/DVD. They degenerate rather

Re: Improving disk reliability

2008-01-03 Thread knitti
On 1/3/08, Marius Hooge [EMAIL PROTECTED] wrote: Doug wrote: 2. I don't know the size of the disk to know the size of the backup media required. However, CD/DVD burners are less than the cost of a hard drive and the media is relatively cheap. I personally don't recommend

Re: Improving disk reliability

2008-01-03 Thread Tobias Weingartner
Stuart Henderson wrote: It wouldn't be more likely that the disk _crashes_ by doing this, and it may give _some_ protection against _some_ failure modes. It also gives new and exciting ones to take their place. Actually, since you'd be mirroring to two different portions of the same disk

Re: Improving disk reliability

2008-01-03 Thread Stuart Henderson
On 2008/01/03 16:59, Tobias Weingartner wrote: Stuart Henderson wrote: It wouldn't be more likely that the disk _crashes_ by doing this, and it may give _some_ protection against _some_ failure modes. It also gives new and exciting ones to take their place. Actually, since you'd be

Re: Improving disk reliability

2008-01-03 Thread Henning Brauer
* Douglas A. Tutty [EMAIL PROTECTED] [2008-01-03 23:34]: If neither hard drives nor CD/DVDs are a good backup soluton, and networking the backup to another computer's hard drive (which then presumably also has the bitrot problem) isn't an option, and a DLT or whatever tape drive is too

Re: Improving disk reliability

2008-01-03 Thread Douglas A. Tutty
On Thu, Jan 03, 2008 at 11:36:31PM +0100, Henning Brauer wrote: * Douglas A. Tutty [EMAIL PROTECTED] [2008-01-03 23:34]: If neither hard drives nor CD/DVDs are a good backup soluton, and networking the backup to another computer's hard drive (which then presumably also has the bitrot

Re: Improving disk reliability

2008-01-03 Thread Todd Alan Smith
On Jan 3, 2008 8:47 PM, Douglas A. Tutty [EMAIL PROTECTED] wrote: On Thu, Jan 03, 2008 at 11:36:31PM +0100, Henning Brauer wrote: * Douglas A. Tutty [EMAIL PROTECTED] [2008-01-03 23:34]: If neither hard drives nor CD/DVDs are a good backup soluton, and networking the backup to another

Re: Improving disk reliability

2008-01-03 Thread Ted Unangst
On 1/3/08, Douglas A. Tutty [EMAIL PROTECTED] wrote: I thought that there was a trend in the industry away from tapes toward hard-drive-based systems, e.g. virtual tape libraries that are basically large file servers with far more capacity than throughput. If bitrot is a serious concern,

Re: Improving disk reliability

2008-01-03 Thread Nick Guenther
On 1/3/08, knitti [EMAIL PROTECTED] wrote: On 1/3/08, Marius Hooge [EMAIL PROTECTED] wrote: I personally don't recommend backups to CD/DVD. They degenerate rather quickly depending on their quality and the storage humidity. Unlike a USB/Firewire harddisk inside your fire-, water-,

Improving disk reliability

2008-01-02 Thread Erik Wikström
Hi I am setting up a OpenBSD box to act as a router/file-server for my parents, the box consists mostly of old parts and I try to not spend any extra money on it. One of my biggest worries is, since it will act as a file-server which will contain stuff with some emotional value, data- loss. The

Re: Improving disk reliability

2008-01-02 Thread johan beisser
On Jan 2, 2008, at 4:29 PM, Erik Wikstrvm wrote: The preferable way to solve this would probably be to use two disks but that is not an option for me. So I was wondering if it is possible to instead split the disk in two parts, the first is used to install OpenBSD on, and the rest is split in

Re: Improving disk reliability

2008-01-02 Thread Chris Zakelj
Erik WikstrC6m wrote: Hi I am setting up a OpenBSD box to act as a router/file-server for my parents, the box consists mostly of old parts and I try to not spend any extra money on it. One of my biggest worries is, since it will act as a file-server which will contain stuff with some emotional

Re: Improving disk reliability

2008-01-02 Thread Nick Holland
Erik Wikstrvm wrote: Hi I am setting up a OpenBSD box to act as a router/file-server for my parents, the box consists mostly of old parts and I try to not spend any extra money on it. One of my biggest worries is, since it will act as a file-server which will contain stuff with some

Re: Improving disk reliability

2008-01-02 Thread Stuart Henderson
On 2008/01/03 01:29, Erik Wikstrvm wrote: The preferable way to solve this would probably be to use two disks but that is not an option for me. So I was wondering if it is possible to instead split the disk in two parts, the first is used to install OpenBSD on, and the rest is split in two and

Re: Improving disk reliability

2008-01-02 Thread scott
: Improving disk reliability Date: Thu, 03 Jan 2008 01:29:38 +0100 Mailer: Thunderbird 2.0.0.9 (Windows/20071031) Delivered-To: [EMAIL PROTECTED] Hi I am setting up a OpenBSD box to act as a router/file-server for my parents, the box consists mostly of old parts and I try to not spend any extra money

Re: Improving disk reliability

2008-01-02 Thread Douglas A. Tutty
On Thu, Jan 03, 2008 at 01:29:38AM +0100, Erik Wikstr??m wrote: I am setting up a OpenBSD box to act as a router/file-server for my parents, the box consists mostly of old parts and I try to not spend any extra money on it. One of my biggest worries is, since it will act as a file-server which