This article explains the Disk R/W frequency and threshold values and identifying the cause for resolving the Minor Alarm

Below Chassis Alarm comes up:

#show chassis alarms                    
1 alarms currently active
Alarm time        Class Description
2024-07-12 02:13:27 UTC Minor   RE 0 Disk 1 Write Rate Threshold Cross

This Minor Alarm is raised when the Disk R/W frequency hits the configured threshold.

Threshold : 4 MB/s sustaining over 1000s (little over 15 minutes)

There could be multiple reason contributing for this Alarm and the top points to check are as below:

1. Active traceoptions, scripts, captures which are writing to the disk constantly. Need to deactivate/delete the config to reduce Disk R/W operation.
2. Check for "any any" logging if configured and the respective log files and their size.
3. Multiple quick commit operation also increases the Local Disk R/W operation. Need to check if this is happening and give time between the commit operations.

If all the above points are checked and still we have the Alarm, gather RSI, All Logs and open a ticket with JTAC.

NOTE : The R/W operation need to sustain for 1000 seconds (little over 15 minutes) for raising the Alarm. Hence, the Alarm could come and get cleared in 15 minutes if the Disk R/W rate decrease. Kindly wait for 15 minutes after making any changes for addressing the issue.