this post was submitted on 18 Aug 2024
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I'm writing a program that wraps around dd to try and warn you if you are doing anything stupid. I have thus been giving the man page a good read. While doing this, I noticed that dd supported all the way up to Quettabytes, a unit orders of magnitude larger than all the data on the entire internet.

This has caused me to wonder what the largest storage operation you guys have done. I've taken a couple images of hard drives that were a single terabyte large, but I was wondering if the sysadmins among you have had to do something with e.g a giant RAID 10 array.

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[–] [email protected] 2 points 2 months ago

I recently copied ~1.6T from my old file server to my new one. I think that may be my largest non-work related transfer.

[–] [email protected] 2 points 2 months ago* (last edited 2 months ago)

20TB (out of 21TB usable), a second 6x6TB zfs raidz2 server as my send target.

[–] [email protected] 1 points 2 months ago (1 children)

While I haven't personally had to move a data center I imagine that would be a pretty big transfer. Probably not dd though.

[–] [email protected] 1 points 2 months ago

I can't imagine how nerve-wracking it would be to run dd on something like that lol. I still don't trust myself to copy a USB stick with my unimportant bullshit on it with dd, let alone a server with anything important on it!

[–] [email protected] 1 points 2 months ago

Probably some vigeo game on that is ~150-200 GiB. Does that count?

[–] [email protected] 1 points 2 months ago

I think it would be my whole broken manjaro install, I just used dd to make a copy so I could work on it later lol. About 500 gigs

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