hePrism Central Memory Cluster Runway Diagramprovides insights into memory usage trends, predicting how long the cluster can sustain workloads before exhausting resources.
* Thesolid blue arearepresents theactual memory consumption over time.
* Thedotted red linerepresents theeffective memory capacity limitbased on the cluster's current configuration.
Analyzing the Dotted Red Line
Thedotted red line is labeled "Effective Capacity: 503.22 GiB", which means:
* It is the totalusable memory capacityin the cluster after consideringhypervisor overhead, redundancy settings, and failover capacity.
* This value isnot a hard limitbut an indication ofthe available memory before potential performance issues occur.
Evaluating the Answer Choices
#(A) It is the default trend analysis static threshold that can be manually set.(Incorrect)
* Thedotted red line is not a static thresholdthat an administrator can manually configure.
* Trend analysis in Prism isdynamicand based on workload history and projections.
#(B) It is the maximum memory the administrator can assign to VMs.(Incorrect)
* Administrators canoversubscribememory beyond the dotted red line if memory overcommitment is enabled.
* However, oversubscribing memory beyondeffective capacitymay impact performance.
#(C) It is the calculated memory oversubscription limit for currently running VMs.(Incorrect)
* The dotted red linedoes not represent oversubscription limits.
* Memory oversubscription depends onhypervisor memory ballooning, compression, and swapping mechanisms, which are not directly shown here.
#(D) It is the usable capacity based on cluster configuration options.(Correct Answer)
* Thedotted red line (503.22 GiB)represents theactual usable memory availablein the cluster after factoring in system overhead.
* This value is determined by:
* Total physical memory (256 GB per host × 3 hosts = 768 GB)
* Memory reserved for hypervisor and system processes
* Cluster failover and redundancy settings
* Intelligent Operations capacity analysis
Multicloud Infrastructure References & Best Practices
* Prism Central's "Runway" featureprovidesAI-driven trend analysisfor memory, CPU, and storage capacity.
* Theeffective capacity limithelps administrators makeproactive scaling decisionsbefore resources become critical.
* To increase thememory runway, administrators can:
* OptimizeVM memory allocation.
* Addmore hoststo the cluster.
* Enablememory deduplication and compression (if available).