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I received some questions today around the storage latency requirements for vSphere Metro Storage Cluster (vMSC) solutions. In the past the support limits were strict:
RTT stands for Round Trip Time by the way. Recently, and today I noticed I never blogged about this, the support limits have changed. For instance EMC VPLEX supports up to 10MS RTT. Which indeed makes a lot of sense to have it aligned with the vMotion limits as more than likely the same connection between sites is used for both storage replication and vMotion traffic. So I would recommend anyone who is considering implementing a vMSC environment (or architecting one) to contact your storage vendor about their support limits when it comes to storage latency. "vSphere Metro Storage Cluster storage latency requirements" originally appeared on Yellow-Bricks.com. Follow me on twitter - @DuncanYB. |
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