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Managing QoS

How to control Dell ObjectScale client traffic using QoS

Using QoS to guarantee performance of critical applications

Progress Connection Manager for ObjectScale implements QoS (Quality of Service) controls to rate limit connections and requests to Dell ObjectScale platforms providing full control over the levels of service provided to applications and users.

QoS on ObjectScale storage provides

  • Granular control of resource allocation in multi-tenant and multi-application environments
  • Protection against rogue applications generating excessive requests
  • Reduced impact of unpredicted events such as boot storms
  • Fair and balanced allocation of service across multiple workloads

Implementing QoS for Dell ObjectScale

QoS controls may be applied based on connection rate or request rate with the option of providing graceful throttling of requests with a HTTP 429 response (Too many requests) or with a 503 response (Service unavailable). For maximum flexibility controls can be applied based on the client (source) or on the ObjectScale resource (target) being accessed.

QoS Controls for Connection Manager for ObjectScale

Rate limiting controls of connections and requests may be applied as outlined below to enable QoS on Dell ObjectScale storage platforms. Controls may be defined via the Connection Manager for ObjectScale web interface or via API.

Control PointUsage
GlobalApply a global limit to all traffic accessing ObjectScale storage via the Connection Manager for ObjectScale to prevent the storage platform for being overloaded
Source IP rangeEnforce an ObjectScale QoS limit based on the client’s source IP address or subnet to allow segmentation of traffic by location
ObjectScale NamespaceApply a limit based on the namespace being accessed
ObjectScale Bucket – PathUse the bucket path (e.g. ac.example.com/reports) to define the QoS to be applied
ObjectScale Bucket – Virtual HostUse the bucket host (e.g. reports.ac.example.com) to define the QoS to be applied

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