Data Domain: DD6300 may experience disk temperature warnings from SSD installed in the PCI slots on the rear of the appliance.

Verify all temperatures are all within safe limits, and that all the DD6300 hardware is functional and error free.  After verifying all the hardware is in a good state, we can safely ignore the unnecessary disk temperature warnings.

# enclosure show all ------------------ Fans Description Level Status ----------- ----- ------ FAN 0A low OK FAN 0B low OK FAN 1A low OK FAN 1B low OK FAN 2A low OK FAN 2B low OK FAN 3A low OK FAN 3B low OK FAN 4A low OK FAN 4B low OK FAN 5A low OK FAN 5B low OK ----------- ----- ------ Temperature Description C/F Status ----------------------- ------- ------ Ambient Temperature 29/84 OK SP Temperature 39/102 OK MP Temperature 29/84 OK CPU0 Temp Relative -36/-33 OK CPU1 Temp Relative -35/-31 OK Hottest HDD Temperature 50/122 OK Drive IO Temperature 50/108 OK DIMM Bank0 Temperature 40/104 OK DIMM Bank1 Temperature 40/104 OK DIMM Bank2 Temperature 40/105 OK DIMM Bank3 Temperature 41/106 OK ----------------------- ------- ------ Power Supply Description Status -------------- ------ Power module 0 OK Power module 1 OK -------------- ------ # disk show reliability-data -------------------------- Disk Slot ATA Bus Reallocated Temperature (enc/disk) CRC Err Sectors ---------- ---- ------- ----------- ------------ 1.13 13 n/a 0 54 C 129 F 1.14 14 n/a 0 52 C 126 F

Disk (SSD)  temperature warnings, from slots 1.13 and 1.14 , may post and clear when the disk warms enough to enter the warning temperature threshold.  SSD disks can safely operate to 60 degrees Celsius and thus temperature warnings below the 60 degree Celsius threshold can be safely ignored.

# alerts show current -------------- Id Post Time Severity Class Object Message ----- ------------------------ -------- ----------- ----------------------------------- ------------------------------------------------------- p0-67 TUES Feb 20 17:18:03 2018 WARNING Environment Enclosure=1:Disk=13:Threshold(C)=50 EVT-STORAGE-00003: Disk temperature is moderately high. p0-68 TUES Feb 20 17:18:26 2018 WARNING Environment Enclosure=1:Disk=13:Threshold(C)=52 EVT-STORAGE-00003: Disk temperature is seriously high. p0-70 TUES Feb 20 17:18:28 2018 WARNING Environment Enclosure=1:Disk=14:Threshold(C)=50 EVT-STORAGE-00003: Disk temperature is moderately high. p0-69 TUES Feb 20 18:21:22 2018 WARNING Environment Enclosure=1:Disk=14:Threshold(C)=52 EVT-STORAGE-00003: Disk temperature is seriously high. ----- ------------------------ -------- ----------- ----------------------------------- ------------------------------------------------------- There are 4 active alerts. Hostname: dd_6300-lab Location: NC System SerialNo: APMxxxxxxxxxxxxx Chassis SerialNo: FCNCSxxxxxxxxxxxxx ModelNo: DD6300 Version: 6.0.2.0 Time: TUES Feb 20 17:18:28 2018 Alert Id: p0-70 Event Id: EVT-STORAGE-00003 Event Message: Disk temperature is moderately high. Object: Enclosure=1:Disk=14:Threshold(C)=50 Additional Information: EnclosureSerialNumber=FCNCSxxxxxxxxx:DiskSerialNumber=GJNAxxxxxxxxxx:Temperature(C)=50 Hostname: dd_6300-lab Location: NC System SerialNo: APMxxxxxxxxxxxxx Chassis SerialNo: FCNCSxxxxxxxxxxxxx ModelNo: DD6300 Version: 6.0.2.0 Time: TUES Feb 20 18:21:22 2018 Alert Id: p0-69 Event Id: EVT-STORAGE-00003 Event Message: Disk temperature is seriously high. Object: Enclosure=1:Disk=14:Threshold(C)=52 Additional Information: EnclosureSerialNumber=FCNCSxxxxxxxxxx:DiskSerialNumber=GJNAxxxxxxx:Temperature(C)=52

The root of the problem is that these SSD, in the rear of the appliance are utilizing thresholds which are tailored for disks, which are installed in the front of the appliance. 
This is software problem, and the long term resolution will be to change the thresholds, to a more appropriate value, for SSD in the rear of the DD6300.
This has been fixed in code version 6.0.2.20  & 6.1.1.10  and all numerically higher versions.
If you are not able to upgrade the OS to a fixed version, please contact Data Domain Support to apply a registry key which will disable the disk temperature condition from sending unnecessary alerts.

The fix for this issue will be checked into the below code releases and all subsequent higher versions of DDOS

Branch	Version	Fix-Status	Date
6.0.2	6.0.2.20	fix-complete	2018-03-02 08:19:18
6.1.1	6.1.1.10	fix-complete	2018-03-02 09:16:15
6.0.3	6.0.3.0	fix-complete	2018-05-04 14:40:36