Column Name  | Data Type  | Description  | 
array_name  | STRING  | Name of the array.  | 
CUM_INTERVAL_SEC  | NUMBER  | Time interval in seconds for which the data was collected for the daily LUN performance log.  | 
KBYTES_READ  | NUMBER  | Amount of data read from the LUN.  | 
KBYTES_WRITTEN  | NUMBER  | Amount of data written to the LUN.  | 
LOG_DATE  | DATE  | The date and time the entry was written to the log table.  | 
LOGICAL_UNIT_ID  | NUMBER  | Internally generated ID that uniquely identifies the logical unit.  | 
logical_unit_name  | STRING  | Name of the LUN  | 
READ_HIT_IO  | NUMBER  | Cache read hit I/O rate; data available from cache.  | 
READ_IO  | NUMBER  | Read I/O operations per second.  | 
READ_IO_RESPONSE_TIME  | NUMBER  | Read I/O response time.  | 
READ_IO_TIME_COUNTER  | NUMBER  | Read I/O time counter.  | 
STORAGE_ARRAY_ID  | NUMBER  | Internally generated sequential ID that uniquely identifies the storage array.  | 
TOTAL_IO  | NUMBER  | Total I/O operations per second.  | 
TOTAL_IO_RESPONSE_TIME  | NUMBER  | Total I/O response time.  | 
TOTAL_IO_TIME_COUNTER  | NUMBER  | Total I/O time counter.  | 
WRITE_HIT_IO  | NUMBER  | Write hit I/O rate; data to be updated resides in cache.  | 
WRITE_IO  | NUMBER  | Write I/O operations per second.  | 
WRITE_IO_RESPONSE_TIME  | NUMBER  | Write I/O response time.  | 
WRITE_IO_TIME_COUNTER  | NUMBER  | Write I/O time counter.  |