Since it is the Lenten Season for some folks ……..
Okay it’s bad pun day but I do like fried fish so yummy yummy! Product Placement Day…. Just for fun.
We have been going on the past weeks about good data protection. Data protection goes beyond BACKUP. It goes beyond RESTORE. It goes beyond proper storage OFFSITE of your backups. It stretches into the forth step of data protection
Step Four – ROTATE
ROTATE your backups ( This why you need multiple media and multiple copies ) Oh yeah it will cost a little extra but just factor that into your budget when you purchase a computer. It’s part of the total package of ownership.
By using a rotation plan, you mitigate ( hey look I used a lawyer term! ) okay lets keep it simple – you reduce your “Window of Exposure” to data loss. Now you say “Calvin, what do you mean by this – “Window of Exposure”?”. Well, this is what I mean. Check this scenario to understand.
Sunday Night –
Monday Morning –
Next Sunday Night –
You run your SuperDuper backup to clone your Mac to “External Drive B” – Date 3-20-2011
Next Monday Morning –
At lunch time, you go to the bank and put “External Drive B” into your safe deposit book for secure keeping. You take “External Drive A” out of box to take home with you after work.
Monday Afternoon –
You get a call from your neighbor that the GoldFish is fine but the rest of the house just burned to the ground. You iMac went up in flames as well. You call your insurance company and all is well because you are protected. Your insurance company rebuilds the house and pays for purchase of contents including a new Mac for you. You un-box the Mac, set it up. Since the fire occurred on 3-21-2011. You will RESTORE your Mac with the BACKUP on “External Drive B” since it is the youngest or most recent backup. It restores successfully. All is well and you return “External Drive B” back to the safe deposit box at the bank. Next BACKUP will be to “External Drive A” which you have onsite at your home.
AHHH …. but what if you had a problem with “External Drive B”?
Let’s say you went to RESTORE with “External Drive B” and the drive had a mechanical or even logical problem and you couldn’t restore from “External Drive B”. Curses ensue loudly! Suddenly you stop and think! Oh yeah. I have “External Drive A” in the offsite location at the bank. You go to the bank and fetch “External Drive A”. You will RESTORE your Mac with the BACKUP on “External Drive A” since it is the only other BACKUP you have. It restores successfully. All is well and you return “External Drive A” back to the safe deposit box at the bank. Next BACKUP will be to a new “External Drive B” which you have purchased to replace the defective “External Drive B” . At this point you can continue to repeat your rotation pattern.
Now you would have lost all the data you created or gathered ( Doc’s e-mails pictures … ) in between the time you had the fire 3/21/2011 and the time of you last successful backup “External Drive A” on 3/13/2011. Your largest “Window of Exposure” is two weeks if on of your external hard drives were to fail to restore.
The more frequent backups , the smaller your “Window of Exposure” will be. Your cost, your choice. Of course I did not go into it here but now you see why I say “A BACKUP you can RESTORE is not a BACKUP at all”. Test RESTORING your backups periodically.
Musical Selection for your ear direction.
Since I indicated that one should store their external drive at the bank, might as well store your valuables as well.
Gotta love “one hit wonders!”
Skating at Garden City Ice Arena this weekend – It’s the Garden City Classic. Stop out for some great Ice Skating. Sunday Showcase is great family entertainment and guess what? It’s FREE!