| Column Name | Data Type | Description | 
| ARRAY_NAME | STRING | Array name | 
| AVG_LATENCY_MS | NUMBER | Average latency in microseconds for the WAFL (Write Anywhere File Layout) file system to process all the operations on the volume; not including request processing or network communication time. | 
| AVG_OTHER_LATENCY_MS | NUMBER | Average latency in microseconds for the WAFL  (Write Anywhere File Layout) file system to process other operations to the volume; does not include request processing or network communication time. | 
| CUM_INTERVAL_SEC | NUMBER | Time interval, in seconds, for which the NetApp Cluster-Mode volume performance history data was collected. | 
| INTERVAL_TYPE | STRING | Interval type of the volume performance history collection. | 
| LOG_DATE | DATE | Timestamp at which the performance data was collected. | 
| NTC_STORAGE_SYSTEM_ID | NUMBER | Storage system ID, for internal use by the Hitachi Storage Viewer database. | 
| NTC_VOLUME_ID | NUMBER | Instance name | 
| NTC_VSERVER_ID | NUMBER | Vserver ID, for internal use by the Hitachi Storage Viewer database. | 
| OTHER_OPS | NUMBER | Number of other operations per second to the volume. | 
| READ_BPS | NUMBER | Bytes read per second from the volume. | 
| READ_LATENCY_MS | NUMBER | Average latency in microseconds for the WAFL (Write Anywhere File Layout) file system to process read requests. | 
| READ_OPS | NUMBER | Number of reads per second to the volume | 
| TOTAL_OPS | NUMBER | Number of operations per second serviced by the volume. | 
| VOLUME_NAME | STRING | Volume name | 
| VSERVER_NAME | STRING | Vserver name | 
| WRITE_BPS | NUMBER | Bytes written per second to the volume. | 
| WRITE_LATENCY_MS | NUMBER | Average latency in microseconds for the WAFL (Write Anywhere File Layout) file system to process write request to the volume; not including request processing or network communication time. | 
| WRITE_OPS | NUMBER | Number of writes per second to the volume. |