1 title: NetApp Filers: Used space of aggregations
3 catalog: hw/storagehw/netapp
7 This check measures the usage of aggregations. The usage
8 is checked against a warning and a critical level, which
9 can be specified in numerous ways.
11 {Trends:} This checks supports aggregation {trends}. This means that the {netapp_api_aggr} check
12 is able to compute the {change} of the used space over the time and can
13 make a forecast into the future. It can estimate the time when
14 the aggregation will be full.
16 In the default configuration the check will compute the trend based on the
17 data of the last 24 hours using a logarithmic average that gives more recent
18 data a higher weight. Also data beyond the 24 hours will to some small degree be
19 reflected in the computation. The advantage of this algorithm is a more
20 precise prediction and a simpler implementation, which does not need any
21 access to any RRDs or similar storage.
23 Please note that when a aggregation is started to be monitored,
24 the trend of the past is unknown and is assumed to be {zero}.
25 It will take at least one trend range of time until the trend
26 approximately reflects the reality.
29 Name of the aggregation as defined in the system
32 All {local} aggregations are automatically inventorized.