Hello: Is there an official Microsoft recommendation regarding BitLocker on SSD drives? Have a link for this please? Specifically, will use of BitLocker on an SSD wear down the drive faster (with or without TRIM) than not using BitLocker? Does the use of BitLocker defeat the benefits of TRIM for SSD endurance? Any other issues or concerns with encrypting an SSD with BitLocker that are different from using BitLocker on spinning-platter drives? Thank You!!!

Here is a Samsung article talking about the performance penalty of using software-based encryption with their SSDs: http://www.samsung.com/global/business/semiconductor/products/SSD/downloads/SamsungSSD_Encryption_Benchmarks_201011.pdf But it doesn't talk about endurance and TRIM compatibility in Windows 7. I'm mainly interested in whether (or how much) the use of BitLocker will shorten the lifespan of an SSD drive, if someone has any info on this. Thanks!

"When Bitlocker is first configured on a partition, the entire partition is read, encrypted and written back out. As this is done, the NTFS file system will issue Trim commands to help the SSD optimize its behavior." http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx --Steven Sinofsky, Microsoft

I've been using Bitlocker with and without a SSD. I've written my experiece under the following link http://superuser.com/questions/235420/bitlocker-performance-impact-on-ssd This link also contains, more comprehensive info., on SSD and Bitlocker compatiblity. Thanks

Engineering Windows 7 MSDN Blogs > Engineering Windows 7 > Support and Q&A for Solid-State Drives http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx "Is Bitlockers encryption process optimized to work on SSDs? Yes, on NTFS. When Bitlocker is first configured on a partition, the entire partition is read, encrypted and written back out. As this is done, the NTFS file system will issue Trim commands to help the SSD optimize its behavior. We do encourage users concerned about their data privacy and protection to enable Bitlocker on their drives, including SSDs."