Shirt Pocket Discussions  
    Home netTunes launchTunes SuperDuper! Buy Now Support Discussions About Shirt Pocket    

Go Back   Shirt Pocket Discussions > SuperDuper! > General

Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
Old 07-12-2014, 12:37 PM
Robert57 Robert57 is offline
Registered User
Join Date: Jun 2009
Location: Alexandria, VA
Posts: 4
Bit-Rot and Superduper! smart updates


I have read recently that data left on HFS+ external hard drives for a couple or more years are in danger of corruption, through "bit-rot", or perhaps a magnetic weakening or disturbance over time. I have a large collection of music on an external Firewire drive that I smart- update to a clone back-up drive about weekly, as I gradually add to and edit my iTunes music library. But I worry that stale sectors of the primary media drive may get corrupted after a few years and that that corruption may be automatically copied over to the target back-up drive in my periodic smart back-ups. Or would Smart Update not copy this bit rot corruption since there is no change in the date of data modification? I gather a ZFS formating would help detect and possibly avoid this kind of corruption, but that is academic for now in Mac-world.

Any hard drive maintenance/ hygiene advice on avoiding bit-rot, or other magnetic corruption, over many years would much appreciated. I just bought a third hard drive that I plan to alternate with the older target back-up drive (perhaps once a month) to give me additional redundancy. Should one do a complete erase and copy procedure to clean and reload the data on older back-up drives every few years?

By the way, should external back-up drives always be formatted as HFS+ (Journaled), even if the original drive was not journaled?

Thanks for your help.


Last edited by Robert57; 07-12-2014 at 12:42 PM.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 04:53 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.