[ltp] X60s/200s with SSD, encrypted disk

[Leon Weber]

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On 19.06.2015 17:22:00, Uwe Brauer wrote:
> I would like to consider a 14.04 installation with an entirely encrypted
> disk. However I fear performance problems and would welcome any comments
> on that subject.

I=E2=80=99ve run an X61s with an encrypted SSD for a good while.  As the CPU
does not support AES in hardware, the AES encryption limited the disk
throughput to about 70MB/s (iirc), which is far away from the numbers
that are possible without encryption (somewhere in the 200=E2=80=A6300MB/s
ballpark).  I=E2=80=99ve lived with it, as it was a big performance boost
already compared to the spinning disk I had before the SSD.

That also meant I didn=E2=80=99t even have to bother with the unofficial BI=
OS
upgrade that enables SATA 2 on the X60 series laptops.  If you decide to
go unencrypted or somehow use a hardware AES implementation (built-in in
your SSD or whatever), keep in mind the X60 series officially only
supports SATA 1 link speeds, but google =E2=80=9Clenovo X60 sata 2=E2=80=9D=
 for an
unofficial BIOS upgrade that enables SATA 2.

    -- Leon.

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