SSD performance on Non-System Partition/drive

Open source disk encryption with strong security for the Paranoid

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SSD performance on Non-System Partition/drive

Forum: General Discussion

Creator: Anonymous

Created: 2015-05-29

Updated: 2015-05-30

Anonymous - 2015-05-29

Good day Mounir!

I have been reading a lot of concern about the performance of VC on system partition on ssd. But I can't find a post regarding non-system drive. I am planning to use VC on non-system drive.

Will the ssd suffer read/write performance? Will it be the same speed as Diskcryptor being used on non system? I haven't tried Diskcryptor but It seems a lot of people and comparing it with regards to ssd. I have no problem with mounting time.

It will be secured if I encrypt whole disk, right?

I am grateful on your work. I can't imagine how you find time with your family , work, and this project. Your family must be very understanding. lol. Send my regards and appreciation. :)
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Enigma2Illusion - 2015-05-29

I cannot answer the questions about SSD read/write performance between VC and Diskcryptor. I assume you are referencing the SSD VC & Diskcryptor discussions in these treads:

https://sourceforge.net/p/veracrypt/discussion/technical/thread/e1e386ff

https://sourceforge.net/p/veracrypt/discussion/technical/thread/b17b65d0

It will be secured if I encrypt whole disk, right?

You can read the following information at the links below:

https://veracrypt.codeplex.com/wikipage?title=Wear-Leveling

https://veracrypt.codeplex.com/wikipage?title=Reallocated%20Sectors

https://sourceforge.net/p/veracrypt/discussion/general/thread/bf48efbd/?limit=25#5c2b

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Anonymous - 2015-05-29

Thank you Enigma for helping.

I already read those links before my post. But the ssd are being used as system drive. Do you mean that VC has the same performance on system and non-system drive given that both drives are already mounted?

I am an average user, so have no idea what works behind VC. All I see is the interface and some speed performance.

I am trying to learn something new. Any info is appreciated. Thank you!

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Anonymous - 2015-05-29

VeryCrypt is still in active development. It has not been audited by a third party.
DiskCryptor support and dev seems to be on and off. There is also no real proper code audit that i know of.

TC / VC will likely have about the same speed on any given encrypted drive volume, it does not matter a lot whether it is a system or secondary disk.

Personally, I am skeptic of DiskCryptor, without any hard facts backing this up. Just a gut feeling. Those numbers just look too good. It makes you wonder if DC is doing the job properly at all. Or if there is some code that pushes up the numbers when a benchmark software is running.

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Enigma2Illusion - 2015-05-29

I would not expect the SSD performance to be different when used for system encryption verses non-system encryption once the SSD drives are mounted.

Have you search the Diskcryptor forums about SSD performance? Here is an interesting thread:

https://diskcryptor.net/forum/index.php?topic=4855.0

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Anonymous - 2015-05-29

Thanks for the link Enigma.

I guess I can live with that performance.

what's your opinion on full disk encryption on SSD with regards to life span? I read different views, and I have no idea who to believe. haha

Some say FDE makes "extra writes" and makes ssd life span shorter. Some say the other way.

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Enigma2Illusion - 2015-05-29

I would ask your SSD manufacturer for your specific model.

I have seen posts on the internet saying you should leave 10% to 20% free on the SSD for partition size. Questions about how it effect the wear-leveling which could force the SSD to use the over-provisioning reserved space.

Please post back any links to your vendor that definitively resolve these questions.

Last edit: Enigma2Illusion 2015-05-29

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Anonymous - 2015-05-29

My ssd is samsung 850 evo 500GB.

I don't know a lot about computers.

This is the info from samsung [link] (http://www.samsung.com/global/business/semiconductor/minisite/SSD/global/html/whitepaper/whitepaper05.html)

If I do a FDE on the drive, Over provisioning will be encrypted as well and will be gone?

I appreciate your time answering my never ending questions. Haha. Thank you!!

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Anonymous - 2015-05-30

Some say FDE makes "extra writes" and makes ssd life span shorter. Some say the other way.

Both are wrong. Initially, setting up FDE is equivalent to reading and rewriting each block in crypted data of your SSD. That means there is one operation that writes 120GB or 250GB or whatever your device capacity is.

After that a fully encrypted system has no more or no less write activity than a normal one. It depends on how you use your system.

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