Date: Mon, 20 Aug 2001 17:59:10 -0400 From: Bill Moran <wmoran@iowna.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Unix Backup Options Message-ID: <3B81882E.51970B49@iowna.com> References: <3B817889.681AC1C5@jwebmedia.com> <3B817DAB.689A522C@iowna.com> <3B818768.C276E696@jwebmedia.com>
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Joseph Koenig wrote: > > Bill, thanks for the info. My system should be able to fit on the tape. > Does dump compress the data automatically, or should my tape drive do > that? dump doesn't do software compression, but it supports hardware compression if your tape drive does it. use "mt" to check and turn on compression if needed. > Are SCSI tape drives usually at /dev/st0? /dev/st0 isn't found on > my system. No, SCSI tapes will be /dev/sa# (/dev/sa0) If you don't have it, try using /dev/MAKEDEV to create the device. Check dmesg to see if it's detected at bootup, if it is, it'll probably work fine. > Bill Moran wrote: > > > > Joseph Koenig wrote: > > > > > > I've been reading about backup options for Unix, and have found the > > > standard dump, dd, tar and cpio options. Just wondering if these were > > > the commonly used methods, or if there were better methods out there? > > > Dump looks pretty useful, but it apparently works best when set up to > > > follow an algorithm, which to me, looks difficult to implement via cron. > > > Any opinions? Thanks, > > > > I generally use dump as a cron job to do full backups every day (during > > off-peak hours) For this, it works great. > > If you're filesystem won't fit on a single tape and/or there is some > > other reason you can't take this approach, dump does offer options for > > incremental backups, I assume this is the "algorithm" you're talking > > about. It can be a little confusing. > > Also, dump handles multi-tape backups well. I have one client with a > > HUGE filesystem setup to rsync to a staging (backup) server during off- > > peak hours. The sysadmin can then backup to tape at his leasure during > > the day. The backup always comprises at least 2 25G DATs, and sometimes > > three. > > amanda is a possible option if you have more complex needs. It's in the > > ports. I haven't used it so I can't really vouch for it or not. > > There is also a commercial product available called BRU. I've not used > > it either (so I can't give an opinion) but you can find out more by > > searching http://mall.daemonnews.org > > > > Hope this helps, > > Bill > > > > -- > > "Where's the robot to pat you on the back?" > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- "Where's the robot to pat you on the back?" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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