If you are using the internal Sun Storage 6Gb SAS PCIe RAID host bus adapter (HBA) (SGX-SAS6-R-INT-Z or SG-SAS6-R-INT-Z), your configuration must meet the following requirements for proper battery cooling:
The HBA must be installed in PCIe slot 4. In slot 4, the battery on the HBA faces an area with greater airflow, which is required for proper battery cooling. Do not move the HBA to slot 2 to allow slot 3 to operate in x16 mode.
With this HBA installed, the ambient temperature requirement for the server is as follows:
Operating temperature: 5 oC to 32 oC (41 oF to 89.6 oF)