When the used capacity of a pool reaches or exceeds the utilization thresholds set for the pool, you will be alerted so that you can take the appropriate action. A SIM (service information message) is displayed by management software and reported to the open-system hosts as SNMP traps.
You can set these threshold values for each pool:
- Warning threshold: Range = 1% to 100%, in 1% increments. Default = 70%.
- Depletion threshold: Range = 1% and 100%, in 1% increments. Default = 80%. The depletion threshold must be higher than the warning threshold.
The following figure shows a pool with a total pool capacity of 1,000 GB that has a warning threshold of 50% and a depletion threshold of 80%. If the used capacity of this pool is equal to or greater than 50% (500 GB) of the total pool capacity (the warning threshold), a SIM and an SNMP trap are reported. If the used capacity of this pool increases further and is equal to or greater than the depletion threshold (80%), another SIM and SNMP trap are reported.