eG Monitoring
 
Measures reported by ClariionMtLunTest

A metaLUN is a type of LUN whose maximum capacity can be the combined capacities of all the LUNs that compose it. The metaLUN feature lets you dynamically expand the capacity of a single LUN (base LUN) into a larger unit called a metaLUN. You can create a metaLUN by adding LUNs to the base LUN. You can also add LUNs to a metaLUN to further increase its capacity. Like a LUN, a metaLUN can belong to a Storage Group, and can participate in SnapView, MirrorView and SAN copy sessions. MetaLUNs are supported only on CX-Series storage systems.

A metaLUN may include multiple sets of LUNs and each set of LUNs is called a component. The LUNs within a component are striped together and are independent of other LUNs in the metaLUN. Any data that gets written to a metaLUN component is striped across all the LUNs in the component.

This test is used to identify the state, I/O activity and overall health of the metaLun pertaining to the SAN server.

 The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
State This measure indicates the status of the MetaLun. status The value 1 indicates that the MetaLun is Enabled and the value 0 indicates that it is Disabled.
Luns_count This measure indicates number of Lun's allocated to this Meta Lun. Number  
Expanded This measure indicates percent of Meta Lun expanded. % This value indicates percent of MetaLun Expanded. A meta Lun can expand automatically when it requires more Disk space. It expands by including its member of the Lun one by one.
Read_requests This measure indicates number of read requests made per second to this Meta Lun. Reqs/Sec  
Write_requests This measure indicates number of write requests made per second to this Meta Lun. Reqs/Sec  
Data_reads This measure indicates number of data reads made per second to this Meta Lun Blocks/Sec  
Data_writes This measure indicates number of data writes made per second to this Meta Lun Blocks/Sec