Purpose: Know about the requirement of HDD.
There are several requirements of hard disk drive (HDD)
1. The disk had better be the one used for surveillance, not for computer use.
Please don't install a desktop hard drive into DVR NVR.
2. The type should be SATA. SATA2(3GB/s) or SATA3（6GB/s）is recommended. If you connect a USB stick or drive to the USB port of DVR, DVR can back up video from internal hard disk drive to USB stick, but can‘t record to USB stick directly.
3. We recommend 5400 RPM.
4. size is 3.5”.
5. The brand can be West digital or Seagate.
6. The capacity should be less than or equal to the recorder‘s maximum capacity.
The form below is the maximum capacity DVR can install on different models.
Here is the method to check the model number: Where to check the model number of the device?
| Model |
Channel |
HDD |
| DL41A |
4 |
4TB*1 |
| DL81A |
8 |
4TB*1 |
| DL41D |
4 |
4TB*1 |
| DL81D |
8 |
4TB*1 |
| DM41D |
4 |
4TB*1 |
| DM81D |
8 |
4TB*1 |
| DF61C |
16 |
2TB*1 |
| DC21O |
24 |
4TB*2 |
| DC31O |
32 |
4TB*2 |
| DHX61E |
16 |
4TB*2 |
| DH81X |
8 |
4TB*1 |
| DH61E |
16 |
4TB*2 |
| DE41T |
4 |
4TB*1 |
| DE81T |
8 |
4TB*1 |
| DJ41J |
6 |
4TB*1 |
| NP41F |
4 |
4TB*1 |