http://www.Linux-Backup.net Backup Issues Backup Media Backup Strategy Copying Directories/Files [Un]Deleting Directories/Files Backup Failure Modes Full/Incremental Backups Example Backup Commands Backup Programs/Scripts 1U Rackmount Chassis Custom-Chassis.com Linux-1U.net 1U-ITX.net ITX-Blades.net Small PC cases Mini-Box.net Wrap-Box.net Wrap-OS.net Wan-Sim.net Linux-Consulting.com Linux-CAE.net Linux-Sec.net Linux-Boot.net Linux-Backup.net Linux-Wireless.org Linux-Office.net Linux-Video.net Linux-Jobs.net Linux-Diff.net 1U-Raid5.net Spam Reporting Free Linux CDs ISO9660.org Distro-CD.org Patch-CD.org Linux is a registered trademark of Linus Torvalds More Linux Legalese

Backup Do you know if your Backup System actually works ?? Did you restore the system from backups onto a virgin disk ?? If your disks crashed right now... Can you recover your data ?? How long will it take for you to recover your data ?? Do you upgrade to a new distro w/ all the patches or same distro with known bugs/problems ?? NEVER backup your data on the same partition or same disk or same server... Backups are highly prone to many un-noticed FAILURES until you happen need a perfect backup to fix a crash disk ... 120 TeraByte per rack Backup System 100 Blades per rack or just 40x 1U chassis per rack ( MyQuotes@ITX-Blades.net ) 1.2TB ( 4x 300GB disk ) per Blade 12TB ( 10x blades ) per 4U Chassis 120TB ( 10x 4U chassis ) per 42U Rack 10x Blades Horizontally, one blade for each day of the week 10x 4U Chassis Vertically, one chassis for each week of the month combine/split data amongst the blades to get the necessary capacity Put today's 7-day incremental backup on a DIFFERENT server than yesterday Put 30-day incremental onto today-chassis+1-blade-8 Put 90-day incremental onto today-chassis+2-blade-9 Put 180-day incremental onto today-chassis+3-blade-10 Put this week's Full Backups onto chassis-8 Put next week's Full backups onto chassis-9 Put 3rd week's Full backups onto chassis-10 7-day Rotation Scheme the backup scripts should use the Month, Week and Date or S-M-T-W-T-F-S to figure out which blades to use today Week-1 S M T W T F S 8 9 0    192.168.1.x    Jan 1, 8, 15, 22, Feb 1, 8, 15, 22 Week-2 S M T W T F S 8 9 0    192.168.2.x    Jan 2, 9, 16, 23 Week-3 S M T W T F S 8 9 0    192.168.3.x    Jan 3, 10, 17, 24 Week-4 S M T W T F S 8 9 0    192.168.4.x    Jan 4, 11, 18, 25 Week-5 S M T W T F S 8 9 0    192.168.5.x    Jan 5, 12, 19, 26 Week-6 S M T W T F S 8 9 0    192.168.6.x    Jan 6, 13, 20, 27 Week-7 S M T W T F S 8 9 0    192.168.7.x    Jan 7, 14, 21, 28 Week-8 S M T W T F S 8 9 0    192.168.8.x Week-9 S M T W T F S 8 9 0    192.168.9.x Week-10 S M T W T F S 8 9 0    192.168.10.x

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