SSD drives

Gerry Reno greno at
Fri May 25 12:21:04 UTC 2012

On 05/25/2012 04:40 AM, Roberto Ragusa wrote:
> On 05/24/2012 03:20 PM, Gerry Reno wrote:
>> Since I'm putting an SSD in my laptop this is important because the laptop drive must be encrypted.
> I hope your CPU has AES-NI.
> A powerful i7 does AES at 50MiB/s (don't remember exactly, but below 100MiB/s)
> without AES-NI and about 900MiB/s with AES-NI.
> SSDs speed is usually around 250MiB/s, so AES-NI is required to maintain speed.
> Additional hint: I would avoid xts modes, as the speed is halved (450MiB/s)
> for not really convincing security reasons.
> I'm running AES with NI on a SSD and the CPUs are almost undisturbed by disk
> activities.
> Cipher name:    aes
> Cipher mode:    cbc-essiv:sha256
> Hash spec:      sha256

Thanks Roberto. 

Yes, I have AES-NI in my i7 cpu.


More information about the devel mailing list