12.1.3 Estimating IM database capacity requirements

When using the integrated monitoring database and the IM Configuration Management database, estimate the amount of capacity required for the databases on the managers where JP1/IM - Manager is running. The following table lists the database sizes available for selection when you set up the system.

Table 12‒1: Database size models
Size model	Capacity			Example of system scale
Size model	Total	Details		Example of system scale
Small scale (S)	11 GB	Integrated monitoring database	9 GB	Total items of event information: 1,000,000 (approx.)^#2 This number is based on the following assumptions: Average event size: 1 KB^#3 Number of events generated per day: 33,000 Storage period for event information: 30 days
		IM Configuration Management database	1 GB	Maximum number of managed hosts: 1,024 hosts Total number of business groups and monitoring groups: 100
		System database area^#1	1 GB	--
Medium scale (M)	36 GB	Integrated monitoring database	33 GB	Total items of event information: 4,000,000 (approx.)^#2 This number is based on the following assumptions: Average event size: 1 KB^#3 Number of events generated per day: 130,000 Storage period for event information: 30 days
		IM Configuration Management database	1 GB	Maximum number of managed hosts: 1,024 hosts Total number of business groups and monitoring groups: 100
		System database area^#	2 GB	--
Large scale (L)	114 GB	Integrated monitoring database	96 GB	Total items of event information: 12,000,000 (approx.)^#2 This number is based on the following assumptions: Average event size: 1 KB^#3 Number of events generated per day: 400,000 Storage period for event information: 30 days
		IM Configuration Management database	10 GB	Maximum number of managed hosts: 10,000 hosts Total number of business groups and monitoring groups: 100
		System database area^#1	8 GB	--

Legend:: --: Not applicable.
#1: The size of the system database area is estimated from the amount of user data to be managed.
#2: Total items of event information might exceed the maximum allowed value depending on the timing of erasing events.
#3: Total items of event information decreases if the event size is larger than 1 kilobyte.

In a cluster system, ensure that sufficient disk space is available on the shared disk and local disk, as specified in the table below.

Table 12‒2: Additional disk space requirements in a cluster system
Size model	Total space required	Space required on shared disk			Space required on local disk
Size model	Total space required	System database area	Integrated monitoring database area	IM Configuration Management database area	System database area
Small scale (S)	11 GB	0.95 GB	9 GB	1 GB	0.05 GB
Medium scale (M)	36 GB	1.9 GB	33 GB	1 GB	0.1 GB
Large scale (L)	114 GB	7.4 GB	96 GB	10 GB	0.6 GB

We recommend that you set a database size that provides sufficient leeway should the number of generated events suddenly increase during system operation.

When the integrated management database reaches its maximum capacity, JP1 events are deleted from the older events. The maximum number of JP1 events that can be deleted at one time is 20,000 regardless of the database size (this value might be smaller than 20,000 depending on the size of the stored JP1 events).

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