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什么是 DPO 许可证?它如何影响 QoS 策略和延迟?

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适用场景    

  • ONTAP 9.3 或更高版本
  • 数据保护优化(DPO)许可证

问题解答

  • 数据保护优化(Data Protection Optimized[DPO])功能可增加每个节点的并发SnapMirror会话数、并提高集群的SnapMirror性能
    • DPO 不适用于包含生产数据的系统
  • 在升级到ONTAP 9.3及更高版本或 使用DPO 许可在ONTAP 9.3及更高版本中创建新的Vserver之后、 <vserver>_dpo_default 将生成具有命名约定的新QoS策略并将其应用于相应命名的Vserver
    • 在以下示例输出中、 Vserver vs4 具有一个 自动生成的DPO默认QoS策略:
cluster11::> qos policy-group show Name Vserver Class Wklds Throughput ---------------- ----------- ------------ ----- ------------ vs4_dpo_default vs4 user-defined 1 100000 IOPS pg2 vs2 user-defined 2 0-500IOPS pg5 vs1 user-defined 4 0-300IOPS pg6 vs0 user-defined 1 0-INF 4 entries were displayed.
  • ONTAP 9.3+数据保护优化型(DPO许可或也称为DP_Optimized) SnapMirror目标集群会自动创建 <vserver>_dpo_default 具有自动配置IOPS限制的QoS策略
    • 这些自动生成的QoS策略旨在限制客户端工作负载对SnapMirror关系的影响
  • 在ONTAP 9.3中创建获得DPO许可的集群中的新Vserver时、或者在随后升级到ONTAP 9.3的集群中应用任何未应用原有QoS策略的Vserver时、系统会应用QoS策略

追加信息

Cluster::> license show

  (system license show)

Serial Number: 1-80-000011

Owner: Cluster

Package          Type    Description          Expiration

----------------- -------- ----------------------------------------

Base             site     Cluster Base License  -

NFS              site     NFSLicense           -

CIFS             site     CIFS License         -

iSCSI            site     iSCSILicense         -

SnapMirror       site     SnapMirror License    -

FlexClone        site     FlexClone License     -

VE               site     Volume Encryption License -

DP_Optimized  site    Data ProtectionOptimized Secondary License -

 

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