Examining Video Surveillance Storage Clustersby John Honovich, IPVM posted on Aug 06, 2008 About John Contact John
In the next few years, we will see a significant transition away from storing video inside DVR/NVR servers. This 'on-board' storage will be replaced by clustered storage that communicates with servers over an IP network. The economics are becoming very attractive for such a move, especially in larger scale deployments.
This review examines the background, advantages and constraints of storage clusters as a replacement for traditional DVR/NVR storage.
Storage clusters are appliances that are separate from your DVR/NVR and communicate with them across your IP network. Storage clusters are modular and more storage can be added over time, starting from as low as a few TBs to more than 1000 TBs.
Here is a summary of the key advantages and constraints:
- Price differential between internal storage and storage clusters have dropped dramatically
- Storage Clusters can reduce storage needs by ~ 30% over internal storage
- Storage Clusters are actually cheaper for large camera counts and storage durations
- Storage Clusters are cheaper and better for megapixel cameras
- Storage Clusters offer RAID 'standard'
- Storage Clusters are not cost-effective for smaller camera counts
- Storage Clusters cannot centralize storage across most distributed facilities
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