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>> No. 23053 Anonymous
29th August 2014
Friday 6:04 pm
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I want to set up a full disk encryption on my laptop. I am using GNU/Linux and frequently work with virtual machines on it.

Will setting up FDE hinder i/o performance significantly? Are there any other drawbacks I might face?
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>> No. 23054 Anonymous
29th August 2014
Friday 6:22 pm
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>>23053

I work with VMs extensively and use LUKS full disk encryption on all my computers. I don't notice any slowdown at all.
>> No. 23055 Anonymous
29th August 2014
Friday 6:29 pm
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>>23053
I have the default FDE using xubuntu on my laptop, but don't use VMs much at all.

From what I have read it slows i/o a little (it has to decrypt everything as it goes) but not much to be bothered about from what I can see. I have a SSD though.
>> No. 23056 Anonymous
29th August 2014
Friday 10:15 pm
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The performance impact is negligible on most workloads. There are a few edge cases where performance can be seriously impacted, but they're rare enough as to be insignificant.

Do give some careful thought to key management, as errors in this regard can result in catastrophic data loss.
>> No. 23057 Anonymous
29th August 2014
Friday 10:23 pm
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>>23056
> The performance impact is negligible on most workloads. There are a few edge cases where performance can be seriously impacted, but they're rare enough as to be insignificant.

For the sake of curiosity, can you please elaborate?

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