XTS-AES key management XTS-AES uses two keys $(k_1, k_2)$, which are obtained from a concatenated key $k$. Does this key $k$ remain same for the whole disk or changes per sector?
To answer the question we first need to take a quick look at how XTS encrypts data:

$$C=E_{k_1}(P\oplus(E_{k_2}(n)\otimes\alpha^i))\oplus(E_{k_2}(n)\otimes\alpha^i)$$

With $\oplus$ denoting bitwise XOR, $n$ denoting the sector index, $i$ denoting the block index within the sector. $\alpha$ is a polynomial in the $GF(2^{128})$ and is exponentiated appropriately and multiplied ($\otimes$) with the encrypted sector index.

As you can see you don't need to alter either the key $k_1$ or $k_2$ for each sector as the indices will introduce a unique whitening value for each block.