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Full Discussion: disaster recovery
Top Forums UNIX for Dummies Questions & Answers disaster recovery Post 50930 by RTM on Wednesday 5th of May 2004 03:10:35 PM
Old 05-05-2004
The quick and easy answer to what files and/or other information do I need to keep copies of to sucessfully restore my system from the ground up:

All of them!


Actually, it depends on what you are going to do - and what type of disaster you are looking to recover from.

Scenario 1 - stupid user removes files he/she needed = Recover from backup tapes

Scenario 2 - stupid System Admin removes files the system needed = Recover from backup and/or rebuild server from scratch and add changed system files from backup, rebuild data from backups.

Scenario 3 - server dies - all disks lost = rebuild from scratch - reload system and data files from backup.

Scenario 4 - natural disaster - fire, tornado... = get new hardware, build from scratch, get backups from off-site, restore system and data files.

Realize that the system files you need to restore are the ones you change - stuff like adding new startup scripts that won't be there after you rebuild from scratch (rebuilding from Solaris cd). Changes to /etc/inittab, /etc/services, specialty files such as DiskSuite config files, Veritas vxprint output, Database configuration files, output from df -k command (showing how things were set up as far as mount)... these type things you may not need if all your servers are built the same with NO deviations. Example - all servers built with same OS - patch level the same - no changes to default system - no application DATA on system drives.

The most important thing you should realize - you need to backup the system and data files so you have something if you do have a disaster to rebuild from.

This also goes for upgrades, adding new software - they don't have to complete sucessfully - the only thing that has to work is how you recover from it. That will save your job more than anything.
Last edited by RTM; 05-05-2004 at 04:18 PM..
 

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idevicebackup2(1)					      General Commands Manual						 idevicebackup2(1)

NAME

       idevicebackup2 - Create or restore backup for iDevices running iOS4+.

SYNOPSIS

       idevicebackup2 [OPTIONS] CMD [CMDOPTIONS] DIRECTORY

DESCRIPTION

       Create or restore backup from the current or specified directory.

OPTIONS

       -u, --uuid UUID
	      target specific device by its 40-digit device UUID.

       -d, --debug
	      enable communication debugging.

       -h, --help
	      prints usage information.

COMMANDS

       backup create backup for the device.

       restore
	      restore last backup to the device.

	    --system
	      restore system files, too.

	    --reboot
	      reboot the system when done.

	    --copy
	      create a copy of backup folder before restoring.

	    --settings
	      restore device settings from the backup.

       info   show details about last completed backup of device.

       list   list files of last completed backup in CSV format.

       unback unpack a completed backup in DIRECTORY/_unback_/.

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SEE ALSO

       idevicebackup(1)

																 idevicebackup2(1)
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