Zero out target drive?
When preparing an external drive for cloning, does it make any difference if it is first erased with Disk Utility or does SuperDuper's erase have the same effect? Also, if Disk Utility should be used, does it make any difference if the drive has zeroes written to it or can it simply be erased?
Thank you, David |
Internally, we use Disk Utility to erase the drive, so there's no real difference. However, once you've put a backup on a drive, we keep track of it using its low-level ID, which is assigned during erase. Erasing outside of SD will cause us to lose track of the drive, so you'll be prompted to select it again.
It's a good idea, with a new drive, to zero it out. That way, any low-level defects will get remapped. |
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David |
Since you're wiping it anyway, David, might as well take the opportunity to test/remap the surface. It's hard to do once data is laid down!
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David |
Well, no. Inside the drive, it automatically detects weak sectors and re-maps them on the fly. I think it's riskier to constantly move data back and forth than it is to just keep a good set of backups so you can recover from the (inevitable) failure.
I'd also suggest a very nice bit of software called SMART Reporter, which is free and available from VersionTracker. It'll keep you informed as to the SMART status of the drive, which *might* (no guarantee) give you some advance warning of drive failure. Hopefully. :) |
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David |
It's up to you, of course, but I would take this opportunity to do it. If you don't want to, don't... it's certainly not mandatory.
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David |
Indeed, true -- but it's helpful for the boot drive! :)
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Thank you, David |
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