What is everyone's experience with encypting SSDs via 5.50.8? Anyone cares to post some times?
We've noticed a serious performance decrease when SSD is encrypted with SGN, regardless of whether full-disk or fast initial encryption was used. This is on new HP machines with i7 processors, running Windows7 x64 and latest SSDs, so both hardware and OS support TRIM operations.
Example numbers, for those who's interested, gathered via CrystalDiskMark 3.0.1:
UNENCRYPTED Corsair CSSD-V128GB2 Drive:
Sequential Read : 212.628 MB/s
Sequential Write : 175.936 MB/s
Random Read 512KB : 155.177 MB/s
Random Write 512KB : 154.502 MB/s
TrueCrypt ENCRYPTED Corsair CSSD-V128GB2 Drive:
Sequential Read : 162.017 MB/s
Sequential Write : 134.865 MB/s
Random Read 512KB : 83.691 MB/s
Random Write 512KB : 60.338 MB/s
SGN 5.50.8 "fast initial encryption" ENCRYPTED Corsair CSSD-V128GB2 Drive:
Sequential Read : 71.869 MB/s
Sequential Write : 69.355 MB/s
Random Read 512KB : 65.140 MB/s
Random Write 512KB : 68.579 MB/s
As you can see, performance impact is quite significant, especially in overall sequential read and write operations. My understanding was that "fast initial encryption" was supposed to be the solution for this performance hit in SSDs, but as you can see, this is not the case.
Can anyone confirm that they are seeing similar figures?
Thanks!
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