HP StorageWorks 2012sa Modular Smart Array user (488320-004, March 2013)
Table Of Contents
- Contents
- About This Guide
- 1
- System Components
- 2
- Installing and Cabling Enclosures
- 3
- Connecting Hosts
- 4
- Configuring a System for the First Time
- 5
- Troubleshooting
- Fault Isolation Methodology
- Correcting Enclosure IDs
- Using System LEDs to Diagnose Problems
- Is the front panel Fault ID amber?
- Is the controller back panel OK LED off?
- Is the controller back panel Fault/Service Required LED amber?
- Are both drive module LEDs, Online/Activity, and Fault/UID LEDs off?
- Is the drive module Fault/UID LED blinking amber?
- Is a connected port’s Host Link Status LED off?
- Is a connected port’s Expansion Port status LED off?
- Is a connected port’s Ethernet link status LED off?
- Is the power-and-cooling module AC Power Good LED off?
- Is the power-and-cooling module DC Voltage/Fan Fault/Service Required LED amber?
- Is the drive enclosure back panel OK LED off?
- Is the drive enclosure Fault/Service Required LED amber?
- Isolating a Host-Side Connection Fault
- Isolating a Controller Module Expansion Port Connection Fault
- Resolving Voltage and Temperature Warnings
- A
- Environmental Requirements and Specifications
- B
- Regulatory Compliance and Safety
- Index
Chapter 5 Troubleshooting 67
Power Supply Sensors
Each enclosure has two fully redundant power-and-cooling modules with load-
sharing capabilities. The power supply sensors described in the following table
monitor the voltage, temperature, and fans in each power-and-cooling module. If the
power supply sensors report a voltage that is under or over the threshold, check the
input voltage.
Cooling Fan Sensors
Each power-and-cooling module 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-and-cooling module reporting
the fault.
During a shutdown, the cooling fans do not shut off. This allows the enclosure to
continue cooling.
Table 5-1 Power Supply Sensors
Description Location Event/Fault ID LED Condition
Power supply 1 Power-and-cooling module 0 Voltage, temperature, or fan fault
Power supply 2 Power-and-cooling module 1 Voltage, temperature, or fan fault
Table 5-2 Cooling Fan Sensor Descriptions
Description Location Event/Fault ID LED Condition
Fan 0 Power-and-cooling module 0 < 4000 RPM
Fan 1 Power-and-cooling module 0 < 4000 RPM
Fan 2 Power-and-cooling module 1 < 4000 RPM
Fan 3 Power-and-cooling module 1 < 4000 RPM