Operational Defect Database
BugZero found this defect 153 days ago.
Data sources
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Hewlett Packard Enterprise | a00136644en_us
Advisory: HPE Cray Supercomputing XD670 May Need Minimal Fan Speeds for Optical Transceivers
Last update date:
12/19/2023
Affected products:
HPE Cray Supercomputing XD670
Affected releases:
No affected releases provided.
Fixed releases:
No fixed releases provided.
Description:
Info
The fan algorithm cannot communicate with the active optical transceiver on some option cards. Specifically with option cards in slots 9 through 13. To ensure full function, it is advised to keep the fan speeds at a minimum of 75 percent.
Scope
Cray XD670 with option cards in slots 9-13 and an optical transceiver
Resolution
Keep the minimum fan speeds at 80 percent when using an optical transceiver. Set the fans using the IPMItool as follows: The command below will set the fan speed to roughly 75 percent: ipmitool raw 0x2e 0x10 0x0a 0x3c 0 64 1 0xC0 0xFF The following command sets it to full speed: ipmitool raw 0x2e 0x10 0x0a 0x3c 0 64 1 0xFF 0xFF The following command sets it back to automatic fan control: ipmitool raw 0x2e 0x10 0x0a 0x3c 0 64 0
