What is the maximum possible size of a TrueCrypt volume?
The maximum possible size of a TrueCrypt volume is 8589934592 GB. However, due to security reasons, the maximum allowed volume size is 1 PB (1,048,576 GB), as the amount of data that is considered secure to be encrypted using a single key depends, among other factors, on the block size of the encryption algorithm. In addition, you need to take into account other limiting factors. For instance, file system constraints, limitations of the hardware connection standard and of the operating system, etc.
