Support
Accounts & Users
Backup
Blueprints
Lumen Private Cloud on VMware Cloud Foundation
Cloud Application Manager
Administering Your Organization
Analytics
Automating Deployments
Billing
Cloud Optimization
Core Concepts
DR Readiness
Deploying Anywhere
FAQ
Getting Started
Integrating with Jenkins
Managed Services
Monitoring
Troubleshooting
Tutorials
Edge Computing Solutions
Compliance
Control Portal
Database
Dedicated Cloud Compute
Disaster Recovery
Overview
SafeHaven 4
SafeHaven 5 CLC to AWS
SafeHaven 5 CLC to Azure
SafeHaven 5 CLC to CLC
SafeHaven 5 CPC-vCF to CLC
SafeHaven 5 General
SafeHaven 5 Manual to AWS
SafeHaven 5 VMware to AWS
SafeHaven Migration
General
Managed Services
Marketplace
Network
Release Notes
Runner
Security
Servers
Service Tasks
Storage
Support
Accounts & Users
Backup
Blueprints
Lumen Private Cloud on VMware Cloud Foundation
Cloud Application Manager
Administering Your Organization
Analytics
Automating Deployments
Billing
Cloud Optimization
Core Concepts
DR Readiness
Deploying Anywhere
FAQ
Getting Started
Integrating with Jenkins
Managed Services
Monitoring
Troubleshooting
Tutorials
Edge Computing Solutions
Compliance
Control Portal
Database
Dedicated Cloud Compute
Disaster Recovery
Overview
SafeHaven 4
SafeHaven 5 CLC to AWS
SafeHaven 5 CLC to Azure
SafeHaven 5 CLC to CLC
SafeHaven 5 CPC-vCF to CLC
SafeHaven 5 General
SafeHaven 5 Manual to AWS
SafeHaven 5 VMware to AWS
SafeHaven Migration
General
Managed Services
Marketplace
Network
Release Notes
Runner
Security
Servers
Service Tasks
Storage
Updated by Shi Jin on Feb 22, 2017
Article Code: kb/301
Article Overview
For SafeHaven-4.0.1 and later released, there is a built-in monitoring tool shipped with the Windows SafeHaven agent. This document shows how to enable this tool to get statistics of the Windows disk IOs for a given period of time. It is a useful tool to have in order to determine the sufficient amount of WAN replication bandwidth for a given a workload, particularly for those busy servers that may be having problem meeting the recovery point objective (RPO).
Disk Monitoring
By default, the monitoring is turned off. To turn it on, simply run the DgSyncEx
command with Administrator privileges
- first select the disk that needs to be monitored
DgSyncEx> select disk 0
- then enable statistics monitoring
DgSyncEx> set stats on
- then the
stats
command would report on the IO statistics from enabling monitoring to current time, for example,
DgSyncEx>stats
DgReportDiskUsageStats: Disk usage statistics for Disk #0:
"Collect disk usage statistics" is ON.
Start time: 13132276047620385 microseconds (13132276047620 miliseconds)
End time : 13132276074343870 microseconds (13132276074343 miliseconds)
Difference: 26723485 microseconds (26723 miliseconds)
READ STATS:
Count : 86
Sum : 1129984 Bytes (1 MB)
Average : 0.04 MB/s
WRITE STATS:
Count 512 : 18
Count x512 : 49
Count 4096 : 97
Count x4096: 103
Count All : 152
Sum 512 : 19470848 Bytes (18 MB)
Sum 4096 : 515072 Bytes (0 MB)
Sum All : 19985920 Bytes (19 MB)
Average : 0.73 MB/s
FAILED WRITE STATS:
Count : 0
Sum : 0 Bytes (0 MB)
SYNC STATS:
Count : 0
Sum : 0 Bytes (0 MB)
Average : 0.00 MB/s
FAILED SYNC STATS:
Count : 0
Sum : 0 Bytes (0 MB)
DgSyncEx>
There is very little performance impact by turning on the monitoring feature. In order to turn it off, you can run
DgSyncEx> set stats off