VSAN-Troubleshooting-Reference-Manual

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Diagnostics and Troubleshooting Reference Manual – Virtual SAN DOM Owner – Full size graphs The Dom Owner full graphs display the same information we have previously seen with VSAN Client and VSAN Disk views. In this example, we can see detailed information for IOPS, Bandwidth, Congestion, Outstanding I/O and Latency. With this view, we can see if the latency is incurred with reads, writes or recoverWrites, and also does it coincide with a rise or fall in IOPS, Bandwith or 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 3 2
Diagnostics and Troubleshooting Reference Manual – Virtual SAN Outstanding IO. Full graphs will help you to look for patters across multiple metrics when troubleshooting performance issues with VSAN Observer. RecovWrites As was mentioned in the VSAN Client view, many graphs include a RecovWrite metric. This metric will only be visible when a rebuild operation is taking place, when a host is placed into maintenance mode and a full evacuation is requested for example. DOM Owner – full graphs view is the place to view this metric. In this example, a new VM storage policy was applied to a number of VMs simultaneously. This is a screenshot taken from the DOM Owner – full graphs views showing how much I/O the rebuild tasks are creating. 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 3 3
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