[VLCR] How to check Latency and Bandwidth from Connector to SCFS using RPCNetworkHealth Tool

Products

• VMware Live Recovery

Issue/Introduction

Illustrate the usage of RPCNetworkHealth Check tools

The RPCNetworkHealth Tool can be used to measure round trip latency and bandwidth from a connector to the SCFS.  It can help you diagnose cases of slow replication, or slow failover / failback operations, where the cloud is the suspected bottleneck.

Alternatively, you can always use 'drc perf' command from the connector appliance shell Refer Connector Performance 

Environment

VMware Live Cyber Recovery

Resolution

1. Login to Connector as root. Refer KB 379853

2. Run 'SvcList | grep VDDK' to list VDDK service name and instances that will be required for the RPCNetworkHealthTool commands.
   Note: for the serviceName field, you will need to copy the portion between the equals sign and the backslash, and for the serviceInstance field, you will need to copy the portion after the backslash from the output and should begin with the 'aux-' prefix (example below). 

     3. Run the below command to view the connectors current latency with the SCFS.  You can also use the '–testThroughput' modifier to show the throughput to the SCFS. 
'RpcNetworkHealthTool --serviceName <vddk service name> --serviceInstance <service instance>'

You can also add the commandline flag "--DaLog.logFileName <filename>" to capture a log file (.gz). You can move the .gz file to the /da/data/cores file and then collect a support bundle to send these logs home.