Hard Drive Size / Days Recording

4 Channels

• 250GB - 2.5~17 days
• 320GB 4~22 days
• 500GB -  5~33 days
• 1000GB - 10~67 days

8 Channels

• 250GB - 1.5~8 days
• 320GB 2.8~14 days
• 500GB - 2.5~17 days
• 1000GB - 5~34 days

16 Channels

• 250GB - 1~8 days
• 320GB 1.8~11 days
• 500GB - 2~16 days
• 1000GB - 3~32 days