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Duplicate several drives concurrently

Terminal - Duplicate several drives concurrently
dd if=/dev/sda | tee >(dd of=/dev/sdb) | dd of=/dev/sdc
2009-12-11 17:34:38
User: nerd65536
Functions: dd tee
21
Duplicate several drives concurrently

If you have some drive imaging to do, you can boot into any liveCD and use a commodity machine. The drives will be written in parallel.

To improve efficiency, specify a larger block size in dd:

dd if=/dev/sda bs=64k | tee >(dd of=/dev/sdb bs=64k) | dd of=/dev/sdc bs=64k

To image more drives , insert them as additional arguments to tee:

dd if=/dev/sda | tee >(dd of=/dev/sdb) >(dd of=/dev/sdc) >(dd of=/dev/sdd) | dd of=/dev/sde

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Shouldn't be possible to do the following with tee, instead of piping:

dd if=/dev/sda | tee >(dd of=/dev/sdb) >(dd of=/dev/sdc) | dd of=/dev/sdd

Anyway, great command!

Comment by inkel 244 weeks and 6 days ago

Yep, you're right. I updated the notes.

Comment by nerd65536 215 weeks and 3 days ago

Your point of view

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