Go Back   Hardware Canucks > HARDWARE > Storage

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old September 21, 2017, 04:24 PM
Coach's Avatar
Hall Of Fame
 
Join Date: Mar 2007
Location: Morden MB
Posts: 1,013

My System Specs

Default How to maintain the FS of a cold storage HDD

I back up my data, perhaps not as well as I should but that is not the topic of my thread. Rather I would like to ask about hard drives that are used as offline backups. How do I mitigate bit rot or other threats to the data on the hard drive? Periodic passes over the drive with SpinRite???

Thank you very much!
Reply With Quote
  #2 (permalink)  
Old September 27, 2017, 04:01 PM
Hall Of Fame
F@H
 
Join Date: Nov 2008
Location: Ottawa, ON
Posts: 1,347

My System Specs

Default

I haven't seen any data about how long modern drives in practice can maintain data when unplugged, and whether passing over the drive with tooling helps or hinders. (i.e. I haven't found a study where someone wrote stuff to 1000 hard drives and checked if the stuff was damaged after 6 months, 1 year, 2 years) The SpinRite (or badblocks, or other drive test) would tell you something went wrong with the drive, but it won't be guaranteed to fix the data.

If you're using multiple drives in an array instead of individual drives as backup, (make sure you have ECC RAM!) you can do a scrub operation on the array. https://wiki.archlinux.org/index.php/Btrfs#Scrub
Unlike a drive test, the scrub can check if the data is damaged and then restore from the redundant copy in your disk array. I mention ECC RAM because if your RAM is unstable when you do a scrub, the scrub software will freak out and think everything is damaged, ruining your data in the "repair" attempt.
__________________
"The computer programmer says they should drive the car around the block and see if the tire fixes itself." [src]
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
need to downsize the rig but still maintain performance stylesj New Builds 8 May 5, 2014 07:35 PM
You know it is cold when... JJThomp Air Cooling 15 November 26, 2012 02:46 PM
How cold is too cold? BootlegUsher Air Cooling 6 December 23, 2009 06:58 PM
How to Maintain a stable Crucial Ballisitix PC2 8500 double sided Overclock rom0n Overclocking, Tweaking and Benchmarking 7 May 11, 2008 04:41 PM
Why is it so dam cold! Eldonko Off Topic 39 February 12, 2008 02:38 PM