Do all current commercial SSDs support a proper "secure erase"?

[VirtualLarry]

Just wondering. Do all current SSDs, do a true "secure erase" (erasing all of the NAND blocks, including non-user-accessable areas) when given the command, or do some of them cheat and only erase the mapping table?

Just wondering about the privacy aspects of getting an SSD. I might just wait until Intel comes out with encrypted RAID. I saw something in the BIOS of an ICH10R board, that indicated that some RAID could be encrypted, but I haven't seen it in person. I'm curious if anyone has messed with that and gotten it working, and whether or not it works with the boot drive.

 

[mfenn]

I'm don't think I've ever messed with an SSD that actually does to a proper secure erase. In my experience, the command has always returned instantly, which indicates to me that it's just putting all of the flash pages back on the free list.