Help finding a Unix friendly RAID 1 backup Post: 302505161

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Special Forums Hardware Filesystems, Disks and Memory Help finding a Unix friendly RAID 1 backup Post 302505161 by Corona688 on Wednesday 16th of March 2011 11:26:15 AM

03-16-2011

Registered User

Define "UNIX-friendly". Which UNIX? Furthermore, what's your architecture and system? What kind of disks do you want to use?

A good stopgap a USB or ethernet drive would be, as any backup is better than no backup. However Windows has no respect for UNIX permissions so just blindly copying files could result in much hair-pull later. You could use the udpcast utility and do something like this:

Code:

# On UNIX
tar -cpf - /path/to/files/i/want/to/backup | udp-sender
# On Windows
udp-receiver > file.tar

..to just keep one giant tar which should preserve the permissions of the files inside it. To restore,

Code:

# in Windows
udp-sender < file.tar
# in UNIX
udp-receiver | tar -C /path/ -vxpf -

Of course, make sure the drive is formatted with NTFS or something which allows Windows to create >4GB files. FAT won't do.

And if you can have the UNIX system use the drive directly? All the better.

You might have troubles reusing the disk in a RAID once you want to make one, since you'd quite likely need to blank the contents before you make it part of an array.

If you want reliable hardware, I would suggest avoiding consumer-grade stuff. Especially avoid jmicron chipsets. 3ware works pretty closely with UNIX vendors.

Last edited by Corona688; 03-16-2011 at 12:35 PM..

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LEARN ABOUT DEBIAN

cpmcp

CPMCP(1)							   User commands							  CPMCP(1)

NAME

       cpmcp - copy files from and to CP/M disks

SYNOPSIS

       cpmcp [-f format] [-p] [-t] image user:file file
       cpmcp [-f format] [-p] [-t] image user:file ... directory
       cpmcp [-f format] [-p] [-t] image file user:file
       cpmcp [-f format] [-p] [-t] image file ... user:

DESCRIPTION

       cpmcp  copies  one or more files to or from a CP/M disk.  When copying multiple files, the last argument must be a drive or directory.  The
       drive letter does not matter because the device is specified by the image, it is only used to specify which direction  you  want  to  copy.
       The user number is specified after the drive letter, if omitted user 0 is used.

       You can use * and ? in CP/M file names, which have the same meaning in sh(1) file name patterns.

OPTIONS

       -f format
	      Use the given CP/M disk format instead of the default format.

       -p     Preserve time stamps when copying files from CP/M to UNIX (not implemented for copying the other way so far).

       -t     Convert text files between CP/M and UNIX conventions.

RETURN VALUE

       Upon successful completion, exit code 0 is returned.

ERRORS

       Any errors are indicated by exit code 1.

FILES

       /etc/cpmtools/diskdefs	CP/M disk format definitions

AUTHORS

       This  program  is  copyright  1997-2010	Michael  Haardt  <michael@moria.de>.   The  Windows  port  is  copyright  2000,  2001 John Elliott
       <jce@seasip.demon.co.uk>.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

       This  program  is  distributed  in  the	hope  that  it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program.  If not, write to the Free Software  Foundation,
       Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

SEE ALSO

       cpmls(1), cpm(5)

CP
/M tools							  March 30, 2010							  CPMCP(1)