Tony Northrup: "I LOST MY PHOTOS. Don't make the same mistakes."
Mar 29, 2022 12:31:04 #
TriX wrote:
Yes indeed, you stay, you die.
Isn't halon a thing of the past, just for that reason?
Mar 29, 2022 12:34:31 #
jerryc41 wrote:
Isn't halon a thing of the past, just for that reason?
No, they discontinued use for new installs because when used it helps deplete the ozone layer.
Mar 29, 2022 12:34:57 #
Longshadow wrote:
No, they discontinued use for new installs because when used, it helps deplete the ozone layer.
Okay.
Mar 29, 2022 12:36:27 #
jerryc41 wrote:
Okay.
Evidently in-place (existing) systems were grandfathered in.
Mar 30, 2022 00:13:32 #
Longshadow wrote:
"Bit Rot" sounds so much cooler than corrupted data.
I thought bit rot pertained to CD/DVD media, a type of data corruption due to degradation in the media itself.
Last I knew hard drives don't exhibit bit rot.
People will call it what they want though.
I thought bit rot pertained to CD/DVD media, a type of data corruption due to degradation in the media itself.
Last I knew hard drives don't exhibit bit rot.
People will call it what they want though.
The Second Law of Thermodynamics will tell you that “bit rot” is inevitable if you don’t supply energy to rebuild your bits. However, the law doesn’t predict the time frame. Examples include: CDROMS/DVDS actual physical failure of the media; Disk drives loss the magnet storage caused by heat; SSD electrons escape from their wells… All essentially caused by heat. For all practical purposes all are minimized by simply repeated copying between devices, error correcting codes and redundancy.
Design of super redundant storage systems is not a task for casual thoughts. And is expensive! There are some principles that we can follow.
Most importantly actually have backups. The dumbest thought is “maybe someday”.
Automate backups so you can’t “forget” to run it.
Demonstrate that you can actually recover your data in the event of failure. After you watch your data go away is not a good time to open the manual.
Don’t count on a backup in the same box so that lightening has to strike twice to get you.
Keep a copy off site. Think tornado.
3-2-1! Three copies, two different media and one off-site.
I keep two copies contemporaries on removable media and one swapped out frequently in a safe deposit box. Removable hard drives moving to SSDs. Semi off site. I used to lock one in my desk at work. But retired 14 years ago. Then approximately quarterly I copy incrementally to AWS S3 “Glacier” which was the least expensive reliable archival (write often, read seldom with cost and potential time delay) I found at the time.
It is not cheap to own your system but you can lease a little piece of a big system.
Mar 30, 2022 10:50:34 #
Apr 1, 2022 17:20:50 #
Apr 1, 2022 18:14:36 #
MDI Mainer wrote:
We used to call it Father/Son/Grandfather backups.
Those copies were in addition to the "operating" files.
Don't ONLY backup photos either!
Backup ALL files that you don't want to loose or have to rebuild: documents; spreadsheets; receipts; manuals; ... .
Even my music files are backed up.
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