| Zerto Checkpoints | Checkpoint failures in last 10 minutes | Number of checkpoints that failed to be inserted in last 10 minutes. | 
| Checkpoint insertions in last 10 minutes | Number of checkpoints inserted in last 10 minutes.  The maximum is 120; normal performance is 90–115; less than 40 indicates a problem. | |
| Time to insert last checkpoint | Time in milliseconds needed to insert the last checkpoint; normal is less than 5 seconds. | |
| Zerto Connectivity | # of connected VRAs | Number of VRAs connected to the local Zerto Virtual Manager. | 
| # of peer Zerto Virtual Managers (ZVMs) | Number of Zerto Virtual Managers connected to the local Zerto Virtual Manager. | |
| Zerto GUI | Concurrent GUI calls to the ZVM | Number of concurrent GUI calls to the local Zerto Virtual Manager. | 
| Zerto Reflections | AWS reflection collection time | Time in milliseconds needed to collect AWS environment data. | 
| Hypervisor reflection collection time | Time in milliseconds needed to collect vCenter Server or SCVMM environment data. ■	vCenter Server collection time should be less than 10 minutes. ■	SCVMM collection time should be less than 25 minutes. | |
| Reflection data pushed in last 10 minutes | Size in bytes of environment data pushed in last 10 minutes to Zerto Virtual Managers connected to this site. | |
| Reflection data pushed to peer ZVMs | Size in bytes of last pushed environment data. | |
| Reflection data received from peer ZVMs | Size in bytes of last received environment data. | |
| Reflection data received in last 10 minutes | Size in bytes of environment data received in last 10 minutes from Zerto Virtual Managers connected to the local Zerto Virtual Manager. | |
| Reflections pushed to peer ZVMs in last 10 minutes | Number of times environment data was pushed to peer Zerto Virtual Managers in the last 10 minutes. | |
| Reflections received from peer ZVMs in last 10 minutes | Number of times environment data was received from peer Zerto Virtual Managers in the last 10 minutes. | |
| Retained data | Size in bytes of total retained pushed or received data. | |
| vCD reflection collection time | Time in milliseconds needed to collect vCD environment data. | |
| Zerto Remote Calls | Active incoming remote calls | Current number of active incoming calls being processed. | 
| Active outgoing remote calls | Current number of calls sent to WCF services for which the Zerto Virtual Manager is still waiting for a response. | |
| Incoming remote calls in last minute | Number of incoming remote calls received in last minute. | |
| Outgoing remote calls in last minute | Number of outgoing remote calls executed in last minute. | |
| Zerto RPO | Average RPO | Average RPO in seconds for all VPGs, displayed in the Dashboard. | 
| Current maximum RPO | Current maximum RPO in seconds for all VPGs in this site. | |
| Current minimum RPO | Current minimum RPO in seconds for all VPGs in this site. | |
| Zerto System State | Number of alerts | Current number of active alerts. | 
| System state loop length | Execution time of one system state loop.  This should be less than 40 milliseconds. | |
| Time to calculate statistics | Time in milliseconds needed to calculate statistics during a system state loop. | |
| Time to retrieve active alerts | Time in milliseconds needed to collect local Zerto Virtual Manager active alerts during a system state loop. | |
| Time to save VRA performance counters | Time in milliseconds needed to save VRA performance information to a file. | |
| Zerto Visual Query | Time to execute a VQ build loop | Time in milliseconds needed to execute a single VQ build loop. This should be less than 25 milliseconds. | 
| Time to retrieve hypervisor information (reflection) | Time in milliseconds to execute a remote query on peer Zerto Virtual Managers to retrieve hypervisor information from remote sites. | |
| Time to retrieve local VM list | Time in milliseconds needed to retrieve the list of virtual machines from the local hypervisor. | |
| Time to retrieve local VPG data | Time in milliseconds needed to retrieve VPG data from the local Zerto Virtual Manager. | |
| Time to retrieve VPG list | Time in milliseconds to execute a remote query on peer Zerto Virtual Managers to build a list of VPGs on remote sites. | |
| Zerto VRA Counters | # of VRAs not updated | Should be zero or close to zero. | 
| # of VRAs updated | Should be near or equal to the number of active VRAs. | |
| Average time of 5 most time-consuming VRA updates | Should be close to the median VRA update time. | |
| Median VRA update time | Median time in milliseconds of last 100 VRA updates. |