Getting the hang of it
- Jul 19, 2019
- Reaction score
A strip is a bad idea for video.
a striped drive increase the chance of a failure. If a drive has a failure rate one every 4 years. Then a strip for two of these drives has a failure rate of 2 years.
Also if the stripe dies then all the video is lost on that strip. Put the cameras on separate drives, then when a drive failures you loose only part of your cameras video for that time period. If I had 40 cameras I would use 4 drives, 10 cameras per drive.
So what recommendation do you all recommend instead of using stripped? I have a few new drives coming in to expand storage and can use them to offload/ set up the new way...While I would not recommend striping, it does NOT increase drive wear at all. Striping Raid 0 distributes writes evenly across all disks in the stripe, in many ways extending the life span of individual disks. Lose1, lose all the data.
Raid1 mirroring, doubles writes, but that isn't striping and wasteful. Other forms of raid, eg: 5 and 6 do increase writes but it's no where near double and depending on the size of the array the overhead is quite small. Downside with raid 5\6 is the wasted space and poor performance when a drive fails, but at least you can tolerate failure. There are many other blends of raids, but I don't see the use case for those either for NVR.
Your stats may have come from the tremendous load placed on disks during the re-build of a failed drive in a raid 5 (which is often when a second drive will fail), hence why raid 6 is becoming more popular as it can tolerate 2 failures without the delay of a hot spare re-building.