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Computer Vision Workflow Enhancement – Data Management with Tiger Surveillance
Overview Solution overview Partner overview Architecture Sizing and scaling guidance
Sizing the solution
Sizing example
Scaling the solution
Use cases Conclusions and references

Sizing the solution

Home > Workload Solutions > Computer Vision > White Papers > Computer Vision Workflow Enhancement – Data Management with Tiger Surveillance > Sizing the solution

Sizing the solution

  • Tiger Surveillance can increase retention times, support more extensive camera deployments and improve failure recovery times when the storage is sized appropriately. The key factors we considered for storage sizing are:

    • Each Recorder can process 70 cameras at ~ 4 Mb/s bit rate (based on previous testing)
    • Each Host can run up to 3 recorders (3 X 70 = 210 cameras)
    • Total data retention periods are customer defined

    6.1.1vSANSizing

    vSAN storage is a shared cluster resource, so it is crucial to ensure that its usage is balanced across all nodes and VMs in the system. This solution design uses the vSAN storage layer for all VM disk needs in the system (such as Database, Web UI, Processing nodes). It also uses vSAN storage for additional disk requirements from VM applications running on VMs.

    vSAN provides the Tier1 storage for Milestone. The Tier 1 "live data" is expected to be easily accessed by Milestone with minimal latency. The amount of vSAN available is determined by the size and node types in the cluster. vSAN is not typically used for long-term archive storage.

    A typical VxRail node in the CV platform would have ~ 15 TB of available Tier 1 vSAN storage once data protection policies have been applied. This space will be needed for hosting various CV VMs including 3 Milestone XProtect Recorders.

    In this configuration, a maximum of 4 TB could be presented to the XProtect Recorders to ensure that enough space is available for other VMs.

    6.1.2 Expansion Drive Sizing

    Different types of expansion drives are supported with Tiger Surveillance. It is a customer choice between on-premises or cloud storage options. Regardless of the choice the sizing inputs are:

    • Choose your retention period
    • Identify your total camera count
    • Identify your average camera bit rate in Mb/s

    The following formula can be applied to identify the minimum size in GB of the expansion storage: 

    daily_size = (average_bitrate * 0.000125) * camera_count * 86400

    total_size = daily_size * retention_period

    - average_bitrate (Mb/s)  
    - 0.000125 GB/s in a Mb/s  
    - 86400 Seconds in a Day (24hrs)