Description: Severity: Critical -- failure or failure imminent. A Drive Enclosure Environmental Monitoring Unit has experienced a hardware failure. The handle field contains the WWN of the drive enclosure containing the Drive Enclosure Environmental Monitoring Unit. This problem was detected by the Drive Enclosure Environmental Monitoring Unit located in the drive enclosure determined by the content of the denclNum field as follows:

• If denclNum is less than 99, the location is as indicated by the content of the rackNum and denclNum fields.
• If denclNum is equal to 99, the location is unknown. Note that the content of the rackNum field is undefined in this case.
• If denclNum is greater than 99, the HSV110 controller does not have proof of the current location but the last known location is indicated by the content of the rackNum and denclNum fields. Subtract 100 from the content of those fields to determine the actual last known location. If there have been no configuration changes, the last known location values will be accurate.

Note that the content of the rackNum field will not be valid until a future release. The alarmErrorCode.field.en field contains the value 1 signifying that the Drive Enclosure Environmental Monitoring Unit is the affected element. The enclosures array shows the drive enclosures available on the Fibre Channel loop pair (0 = Loop A, 1 = Loop B) identified in the loop field. The The location of an available drive enclosure is determined by the content of the enclosures.denclNum field as follows:

• If enclosures.denclNum is less than 99, the location is as indicated by the content of the enclosures.rackNum and enclosures.denclNum fields.
• If enclosures.denclNum is equal to 99, the enclosures array entry is not used. Note that the content of the enclosures.rackNum field is undefined in this case.
• If enclosures.denclNum is greater than 99, the HSV110 controller does not have proof of the current location but the last known location is indicated by the content of the enclosures.rackNum and enclosures.denclNum fields. Subtract 100 from the content of those fields to determine the actual last known location. If there have been no configuration changes, the last known location values will be accurate.

Note that the content of the enclosures.rackNum field will not be valid until a future release. The cause of the improper operation is described by the content of the alarmErrorCode.field.ec field as follows:

• 15 = Drive Enclosure Environmental Monitoring Unit hardware failure DP.
• 18 = Drive Enclosure Environmental Monitoring Unit hardware failed BT.
• 19 = Drive Enclosure Environmental Monitoring Unit ESI driver failure.