Modifying system tunable attributes
You can view and update system tunable attributes in the Policies tab. To update the system tunable attributes, complete the following steps: Following are the tunable attributes.
- In the navigation pane of the VM Recovery Manager DR GUI, click the host group for which you want to modify the attributes.
- Select an environment.
- Click the PoliciesThe screen displays system tunable attributes.

Defines the replication mode (example., Asynchronous) used for VM data synchronization.
Auto Discovery Time
Sets the scheduled time (in hours) for automatic system and VM discovery.
Lose VIOS Redundancy
Determines if the system can continue with reduced VIOS redundancy.
HWS Language
Specifies the language used for the Hardware Support interface.
Duplicate Event Processing
Enables handling of duplicate events to improve event consistency.
VM Auto Discovery
Automatically detects and adds new VMs to the recovery setup.
Auto Reverse Mirror
Automatically reverses mirror direction during failback.
Notification Level
Sets the severity level of system notifications (example., Low).
Quick Discovery Interval
Defines how often (in minutes) quick discovery runs.
Custom Script Timeout
Specifies how long (in seconds) custom scripts can run before timing out.
Trace File Size
Sets the maximum size (in MB) for system trace logs.
Quick Discovery
Enables rapid detection of changes in the environment.
Ping
Enables system availability checks using ping.
Deep Discovery
Performs a detailed scan of system and VM configurations.
Min Redundancy Path
Defines the minimum number of redundant paths required for reliability.
Connection Timeout
Specifies the wait time (in seconds) before a connection attempt is aborted.
HMC Ping Timer
Sets the frequency (in seconds) to ping the HMC for availability.
SA Ping Timer
Defines the interval (in seconds) to ping the Storage Agent for health checks.
Cleanup Files Interval
Controls how frequently (in days) old or unused files are cleaned up.
Ksys Spooling
Determines how KSYS spools logs or data for background processing.
HMC Port Number
Sets the port used to communicate with the HMC (default is 443).
VPMEM override
Overrides default VPMEM settings during operations.
Storage Group Update
Controls automatic updates to storage group configurations.