Typical Free space HDD 4TB 6TB 8TB 10TB 12TB 14TB 16TB 18TB 20TB GB TB GB GiB Preferred C NA C1 C2 C3 C4 C5 C6 C7 C8 C9 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C29 C30 C31 C32 C33 Preferred K size k30 k31 k32 k33 k34 Preferred C C1 C2 C3 C4 C5 C6 C7 C8 C9 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C29 C30 C31 C32 C33