Health Monitor error in SMC

Question

Hi All,
I getting an error from sun management console
Health Monitor sd0 Disk Rule Disk loaded, don't add more load to disk
Can anyone help me what is this is any error or H/W failure.
Regards,
Rajeev

Answer 1

Hi Rajeev,
Rajeev-Yadav wrote:
I getting an error from sun management console
Health Monitor sd0 Disk Rule Disk loaded, don't add more load to disk
Can anyone help me what is this is any error or H/W failure.This is the description you can see in your SunMC Console:
"Rule Description: Disk I/O Rule - Compares the disk busy and service time values with the thresholds specified"
It compares what percent of the time the disk is busy to your threshold percentage, and the time it takes to service average disk requests to another target value.
In your case the "Parameter Description" fields says how it determined your disk was loaded:
"if(Disk Service Time Warning<=Service Time) and (Service Time<Disk Service Time Problem).
Disk loaded, do not add more load to disk: Alert
else (Disk Service Time Problem<Service Time).
Disk loaded, do not add more load to disk: Critical"
So, it's comparing how long it takes your disk to service average I/O requests ("Service Time" (in ms))... and it's detecting it taking too long based on the thresholds set in the module ( > 20ms = Warning, > 30ms = Critical).
Either reduce the load on the system, buy faster disks, spread the load over more disks, or... if you think the system is running fine... tune the thresholds upwards so they don't trigger anymore. Remember, a system that's low on physical memory will begin to page/swap... which causes disk I/O. And memory pressure will prevent Solaris from caching your disks effectively... also causing excessive disk I/O. So you may also want to look at low memory as a root-cause of these alarms.
Regards,
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