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Special Forums Hardware Filesystems, Disks and Memory Help finding a Unix friendly RAID 1 backup Post 302508024 by c.wakeman on Friday 25th of March 2011 12:13:44 PM
Old 03-25-2011
Quote:
You'd need to install something like 7zip to extract the tarball, and it'd take a long time, but you could do it.
How long are we talking? For ~200+ GBs, hours, days? My window machine is a core2 duo e8600 running at 3.33 GHz with 3.25 GB RAM.

Quote:
Except it doesn't look quite so easy now since your system can't understand XFS. You'd have to reformat the drive as something else,
I think the drive comes XFS base, reformatting to another format shouldn't be too difficult. What would you suggest, NTFS? Based upon the output of the $ cat /proc/filesystems command, the system doesn't support NTFS either. Would NTFS still allow the tarball to be read by windows in a pinch?

Quote:
or install XFS drivers. It's possible you already have them, just haven't loaded them yet -- try modprobe xfs.
Does this command just see if they are there or load them if they are? Is this safe, stability wise? I don't want to make changes that jeopardize the safety of the data prior to having it backed up...

Quote:
(The offline backup doesn't care what's on the USB drive -- it overwrites it all raw.)
By that do you mean it doesn't care what files are on the drive or what format it is, or both?

Quote:
You could even keep the backup "fresh" in a similar way to the online backup, once you have it, since almost nothing but user files are going to change.
So what you're saying is, I would make a mirror of the entire system hard drive, and then weekly, could do backups, more similar to the online style, where I just upload file changes?

This would be opposed to downloading a tarball onto the drive, and then moving forward downloading new tarfiles on a weekly basis?

Choosing between these options should all be kept in the context that, at some point, I am going to ideally be installing the RAID 1 backup to do nightly backups. At that point, the external drive will be either kept in a separate location in the office or as you have suggested kept off-site (if possible) and brought in to do weekly backups.

When I do install the RAID system, is it better to have them simply backup data files or for them to act as a mirrored system? Planning ahead could help determine what should be done now.

Finally, if I really wanted to, could I do both? Would there be any advantage? disadvantage?

Thanks!
 

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INSTALL(1)							   User Commands							INSTALL(1)

NAME
ginstall - copy files and set attributes SYNOPSIS
install [OPTION]... SOURCE DEST (1st format) install [OPTION]... SOURCE... DIRECTORY (2nd format) install -d [OPTION]... DIRECTORY... (3rd format) DESCRIPTION
In the first two formats, copy SOURCE to DEST or multiple SOURCE(s) to the existing DIRECTORY, while setting permission modes and owner/group. In the third format, create all components of the given DIRECTORY(ies). Mandatory arguments to long options are mandatory for short options too. --backup[=CONTROL] make a backup of each existing destination file -b like --backup but does not accept an argument -c (ignored) -C Install file, unless target already exists and is the same as the new file, in which case the modification time won't be changed. -d, --directory treat all arguments as directory names; create all components of the specified directories -D create all leading components of DEST except the last, then copy SOURCE to DEST; useful in the 1st format -g, --group=GROUP set group ownership, instead of process' current group -m, --mode=MODE set permission mode (as in chmod), instead of rwxr-xr-x -o, --owner=OWNER set ownership (super-user only) -p, --preserve-timestamps apply access/modification times of SOURCE files to corresponding destination files -s, --strip strip symbol tables, only for 1st and 2nd formats -S, --suffix=SUFFIX override the usual backup suffix -v, --verbose print the name of each directory as it is created --help display this help and exit --version output version information and exit The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX. The version control method may be selected via the --backup option or through the VERSION_CONTROL environment variable. Here are the values: none, off never make backups (even if --backup is given) numbered, t make numbered backups existing, nil numbered if numbered backups exist, simple otherwise simple, never always make simple backups AUTHOR
Written by David MacKenzie. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for install is maintained as a Texinfo manual. If the info and install programs are properly installed at your site, the command info install should give you access to the complete manual. install (coreutils) 4.5.3 October 2002 INSTALL(1)
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