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Atlanta PC User Group Wednesday, 9 October 2013

Back Up Your Data. Atlanta PC User Group Wednesday, 9 October 2013. Someone once said:. If your colleagues think you are paranoid about backing up your data….. you may be doing it right, but probably not. Philosophy 3-2-1.

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Atlanta PC User Group Wednesday, 9 October 2013

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  1. Back Up Your Data Atlanta PC User Group Wednesday, 9 October 2013

  2. Someone once said: If your colleagues think you are paranoid about backing up your data….. you may be doing it right, but probably not.

  3. Philosophy 3-2-1 3 copies of anything you care about - Two isn't enough if it's important. 2 different formats - Example: Dropbox+DVDs or Hard Drive+Memory Stick or CD+Crash Plan, or more 1 off-site backup - If the house burns down, how will you get your memories back?

  4. These are not backups: • Backing up your laptop to an SD Card in the same laptop is #notabackup • Backing up to a hard drive that is 6 inches away from your computer is #notabackup • Backing up your Gmail to another Gmail account is #notabackup • Backing up your book by copying it to another folder is #notabackup • The photos that are still in your camera memory are #notabackup

  5. Make a Plan • Take stock of your data • Decide how much it is worth • Determine the methods and frequency • Stick to it religiously

  6. A Plan • Automatic nightly clone of entire drive to another drive. • Automatic versioned backups to Time Machine in basement. • Automatic nightly clone of home directory to Amazon S3. • I get bent out of shape when people whine about a crashed system. • Plan for it. It is inevitable. 11/16/12 1:45pm

  7. Taking Stock • How much data do I have? • How much is actual data • How much is applications • How much is “meta-data” • How much is junk

  8. How much is it worth? • If my disk got “toasted” in a fire, would I pay $2,500 to have it recovered? $1,000? $500? Eh, c’est la vie! • Do I have 50 GB of logs that will be re-created anyway? • Do I need 20 versions of my documents? • Do I have licenses for all my software enabling me to re-install with a simple download?

  9. Methods • There are many ways to think about this • You should use several of them in combination for your plan • There are also dependencies upon the type of system: • Windows • Mac OS • *ix

  10. Physical vs. Logical • Physical takes an image of the complete disk that is ready for restoring to a new disk. • Physical backups do not care what is on the disk – every bit is copied to the image, even though only a fraction of the disk contains data • It can be compressed and encrypted for security purposes. • Makes for the fastest full restore

  11. Physical vs. Logical (cont’d) • Logical backs up only the bits that are used • It depends upon some sort of VTOC or directory • Typically the fastest backup • Depending upon technique, could be the fastest restore • Great for file versioning and old version recovery

  12. Whole vs. Incremental • Whole usually refers to logically copying a file, be it a data file or application • Whole also refers to the whole disk sometimes • Incremental refers to pieces of the file or disk • If a file spans some boundary, such as sectors, and only one sector changed, just copy that • If physically copying a disk and only one sector changed, just copy that one

  13. Versioning & Archiving • Do I keep multiple copies of the file or disk I am backing up. • If I wish to “version” a disk, I need multiple disks • If I wish to “version” a file, I need extra space • Some allow versioning as long as there is space and then start dropping the oldest version

  14. Operating Systems • Windows is the toughest and least flexible • For purposes of our discussion, you have: • Data – easily backed up • Applications – not easy if at all • Registry – too much hardware dependency • The best Windows scheme is image copying and just copying data – make sure you have your licenses to re-install programs

  15. Operating Systems (cont’d) • Mac OS X is easier to back up • Images work like Windows, either full disk or incremental • Data is clearly stored • Application “packages” can be copied and restored • For some reason there seems to be a wider choice of backup software, also

  16. Operating Systems (cont’d) • *ix systems are not much different than Mac OS X - or should I say the other way around – Mac OS X is based upon BSD Unix • Application “packages” are even better maintained, for the most part: • Ubuntu • CentOS • Red Hat • About 50 others

  17. Software • Windows • Acronis – the best all-around image and partition management software, capable of full image, incremental, encoding, compression, and most any other feature found in any backup software. We are getting a discount code for everyone. • Synctoy – free from Microsoft, excellent for small volumes

  18. Software • Mac OS X • SuperDuper – both logical incremental image and logical files, clocks, calendars, full restore variations, encryption, compression, etc. • Carbon Copy Cloner – as far as I can tell, a clone of SuperDuper with all the bells and whistles • Time Machine (Apple) – full versioning with a space limit, one of the few that can do full disk restore, also

  19. Software • *ix • R is the only one I am familiar with and wish I knew more, here. It is FLOSS.

  20. Offsite • Carbonite – platform independent, backs up everything on your internal disk or disks – no external disks, can encrypt and has full file restore ability with limited versioning, runs in background • Crashplan – backs up your internal and external disks (same price), keeps five or ten versions, will restore to a specific time and date by file or complete disk, runs in background. Has a free mode where you and a friend can back up to disks at each other’s location, and a family plan for up to 10 computers.

  21. NASs & RAID • Drobo is an example of a NAS and RAID • Proprietary software • Console monitoring • Multiple bays – five, up to 20 or 32 (?) • Each bay with different size drives up to 4 TB • Network support

  22. NASs & RAID (cont’d) • Multiple bay failure support • 1 of 4 bays, 6.7 TB available of 8 TB • 2 of 5 bays, about 7.5 TB of 10 TB • Has its own backup utility, but I did not bother • Platform independent

  23. Spinrite

  24. Spinrite(cont’d)

  25. Disk Warrior • Boot from Disk Warrior • Ignores logical data • Builds own directory • Asks you to check it before putting it on the disk • Actually corrects some physical errors

  26. Notes • Google article • Abstract http://goo.gl/fqkJoE • Article http://goo.gl/vLdcl2 • Synctoyhttp://goo.gl/qRWDKn • Acronis – discount code coming • SuperDuper- http://goo.gl/1nLUDL • Carbon Copy Cloner - http://www.bombich.com

  27. Notes (cont’d) • “Why You Should Always Have More Than One Backup”, Lifehacker, http://goo.gl/c7bYxO • “The Computer Backup Rule of Three” http://goo.gl/axvQjr

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