VSAN-Troubleshooting-Reference-Manual

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Diagnostics and Troubleshooting Reference Manual – Virtual SAN This brings us to the final metrics displayed in the full graphs view of host aggregrate stats. Evictions The Evictions graph has two metrics, Write after Read and Quota. These both relate to invalidating cache lines. Only once there are enough data blocks dirty would a whole cache line get invalidated. Quota relates to the number of cache lines in flash. V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 2 2 0
Diagnostics and Troubleshooting Reference Manual – Virtual SAN Bytes Read from invalidated cache lines/PLOG callback path to RC The graphs displaying counters from Bytes read from invalidated cache lines and PLOG callback path to RC are only meant for VMware’s engineering team and do not provide meaningful customer facing information that can be utilized for performance troubleshooting. They are shown here simply for completeness. Capacity This graph’s metrics are pretty self explanatory, but the give the administrator the physical or raw view of capacity, and not the vCenter view. This is always useful for reference. V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 2 2 1
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