Error 0x80040094

Value: -2147221356 | 0x80040094 | 2147745940

What does it mean ?

IO_WARNING_SOFT_THRESHOLD_REACHED_EX_POOL_LUN  
Disk %2 has crossed a capacity utilization threshold. When the threshold was crossed, %3 bytes from the pool were used and the disk had %4 bytes of remaining capacity.
Value: 148 | 0x0094 | 0b0000000010010100

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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