HP 2000sa HP StorageWorks 2312sa and 2324sa Modular Smart Array user guide (48 - Page 59

Sensor locations The storage system monitors conditions at different points within each enclosure to alert you to problems. Power, cooling fan, temperature, and voltage sensors are located at key points in the enclosure. In each controller module and expansion module, the enclosure management processor (EMP) monitors the status of these sensors to perform SCSI enclosure services (SES) functions. The following sections describe each element and its sensors. Power supply sensors Each enclosure has two fully redundant power supplies with load-sharing capabilities. The power supply sensors described in the following table monitor the voltage, current, temperature, and fans in each power supply. If the power supply sensors report a voltage that is under or over the threshold, check the input voltage. Table 7 Power supply sensors Description Event/Fault ID LED condition Power supply 1 Power supply 2 Voltage, current, temperature, or fan fault Voltage, current, temperature, or fan fault Cooling fan sensors Each power supply includes two fans. The normal range for fan speed is 4000 to 6000 RPM. When a fan's speed drops below 4000 RPM, the EMP considers it a failure and posts an alarm in the storage system's event log. The following table lists the description, location, and alarm condition for each fan. If the fan speed remains under the 4000 RPM threshold, the internal enclosure temperature may continue to rise. Replace the power supply reporting the fault. Table 8 Cooling fan sensor descriptions Description Location Event/Fault ID LED condition Fan 1 Fan 2 Fan 3 Fan 4 Power supply 1 Power supply 1 Power supply 2 Power supply 2 < 4000 RPM < 4000 RPM < 4000 RPM < 4000 RPM During a shutdown, the cooling fans do not shut off. This allows the enclosure to continue cooling. Temperature sensors Extreme high and low temperatures can cause significant damage if they go unnoticed. Each controller module has six temperature sensors. Of these, if the CPU or FPGA temperature reaches a shutdown value, the controller module is automatically shut down. Each power supply has one temperature sensor. When a temperature fault is reported, it must be remedied as quickly as possible to avoid system damage. This can be done by warming or cooling the installation location. Table 9 Controller module temperature sensors Description CPU temperature FPGA temperature Onboard temperature 1 Normal operating Warning range operating range 3-88°C 0-3°C, 88-90°C 3-97°C 0-3°C, 97-100°C 0-70°C None Critical operating Shutdown values range > 90°C 0°C 100°C None 0°C 100°C None None HP StorageWorks 2000sa G2 Modular Smart Array User Guide 59