Posted by a reviewer on Amazon

This system came with 1 tb and four cameras

Posted by a reviewer on Amazon

I purchased this for terabyte drive because it was the exact model of my 1 tb

Posted by a reviewer on Amazon

Meaning once it copies the data there is no verification that the data was copied correctly

Posted by a reviewer on Amazon

Why this is not usually a problem on a system is a good hard drive and a smooth running operating system it could result in data loss

Posted by a reviewer on Amazon

That is why it is advised to buy a surveillance hard drive something that is specifically made to run off and and to keep copying the files without correction

Posted by a reviewer on Amazon

Keep in mind why this may fit the majority of dvrs that are out there formats do vary from linux windows or their own proprietary software

Posted by a reviewer on Amazon

Generally speaking most surveillance hard drives are compatible with buried systems but keep in mind that your hard drive may need to be formatted either by the dvr system or possibly externally done to make it compatible with your dvr

Posted by a reviewer on Amazon

I have seen more people have problems with dvr hard drives when they do not realize that the system they are installing in a have a proprietary format system and may not be compatible with the drive you purchased