fernando, with non sandforce, i think you may be seeing GC rather than trim. what we are not privy to are the inner workings of controller FW and how they handle/don't handle metadata and how they utilize any sort of file system aware translation layering. for all we know, we could be seeing just a response to a simple delete, and the drive/FW responding GC algorithms. again, it would be ultra cool to have raid trim (i think) under win7/server 08r2. i don't think the hex thing is a be all end all when you include the drive's inner workings. proprietary inner workings. good luck.