I have tried googling and searching for this but just find endless information about why software/hardware based encryption is the better option; what I need to know is whether there are any problems using BOTH.
We want our offsite backups have to be as secure as possible. We previously used backup software that 256bit encrypted the output files. These were written to external drives with 256bit hardware encryption so we had 2 layers of protection for the data.
Due to changes in our server configuration we are looking to use the built in windows server backup, but this does not include an option for encryption. As such, I am looking into using Bitlocker (or some other software based solution) to replace the file based encryption we previously had.
Is there any reason we SHOULDN'T run a software based disk encryption on a hardware encrypted disk? I know performance will be impacted, and we will have an extra hoop to jump through when we want to restore the data, but are there any reasons that this setup won't work or shouldn't be used?