Date: Sun, 01 Jun 2008 22:59:47 -0300 From: Sdavtaker <sdavtaker@gmail.com> To: Jerry McAllister <jerrymc@msu.edu> Cc: Robert Huff <roberthuff@rcn.com>, freebsd-questions@freebsd.org Subject: Re: small office backup hardware advice Message-ID: <48435413.9070208@gmail.com> In-Reply-To: <20080601202815.GA55808@gizmo.acns.msu.edu> References: <48420FF3.8000304@gmail.com> <18498.42600.288236.193974@jerusalem.litteratus.org> <20080601202815.GA55808@gizmo.acns.msu.edu>
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The rotative HDs sounds like a nice approach, i will check some prices and see what i can get here. Thanks for the info, I will try the dump way, it should be enough :-) Damian Jerry McAllister wrote: > On Sun, Jun 01, 2008 at 09:38:48AM -0400, Robert Huff wrote: > > >> Sdavtaker writes: >> > > > Im working in a small office (4 PC with 80GB HD each and a > > "server" with a 200GB HD). > > We were working with no backups at all until now, we was just > > replicating some critical data in more than 1 PC all the time, > > back then there was no money for any hard copy of the data > > outside of the network (maybe a couple DVDR time to time). > > Now, they gave me some money for backup stuff. > > Depends on just what you need. If you just want to cover a system > failure, then maybe you should get some USB connected hard drives. > They are pretty cheap now. > > If you have 4 80 GB drives to back up, then get at least 3 drives > with 350 GB space or more. > > Use fdisk/disklabel/newfs to create 4 (or more) 90 GB filesystems > on each drive. > Then set up a rotation of those drives so you use dump(8) to back up > each current file system that has important data to those USB drives. > So, PC A gets dumped to filesystem da0s1a, PC B to da0s1b, etc. > > Say there is a root, /usr and /data file systems that you want to > back up, just for example, then you would plug in the USB disk > and mount them something like this. > > On PC A, > mount /da0s1a /pcabak > dump 0aLf /pcabak/root.bak / > dump 0aLf /pcabak/usr.bak /usr > dump OaLf /pcbak/data.bak /data > > Then on PC B, > mount /da0s1b /pcbbak > dump 0aLf /pcbbak/root.bak / > dump 0aLf /pcbbak/usr.bak /usr > dump OaLf /pcbak/data.bak /data > > This will crate three appropriately named backup files for each > PC on the USB disk. This is presuming the USB connects as /dev/da0 > It could be something else if you have other SCSI devices. So, it > might ende up as /dev/da1 or something like that. > > Really, you don't need all the extra partitions and filesystems. > Just make one and create appropriately named directories. But > the separate filesystems will enforce separation of that us > useful to you. > > > Or, since there are just exactly 4 systems and it is possible to > make up to 4 slices on a drive, then make 4 slices and then > partitions within each slice to match those on the current machines. > Say you want, for some reason, to back up partitions a, d, e of > PC A and partitions d, f, g of PC B, etc (just grabbing partitions > out of the hat here to use as example here), then > > Make slice 1 for PC A, slice 2 for PC b, slice 3 for PC C and slice 4 for PC D > on each USB disk. > > Then make partitions a, d, e on slice 1, d, f, g on slice 2, etc. > Use newfs(8) to build file systems of each of those partitions and > then use dump to create the dump files in each. That makes sense > but may be more bother then really needed, since you can distinguish > the dumps just by the names you give them. > > If you must create archive backups, then you will probably want to go > to a good tape system, such as DLT or LTO tapes. But, they are so > expensive relative to buying a handful of 350 - 500 GB USB hard drives > that you should think carefully about your needs before deciding. > > Have fun, > > ////jerry > > > >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >>
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