Lenovo Secure Managed Client - Manual (Page 55)

Chapter 7. Troubleshooting and problem solving
The Secure Managed Client (SMC) - Storage Array includes an enclosure services
processor and associated monitoring and control logic to enable it to diagnose
problems within the enclosure’s power, cooling and drive systems.
The sensors for power and cooling conditions are housed within the power supply
units (PSU)s and cooling fans. There is independent monitoring for each unit.
Initial start-up problems
The following problems may occur on initial start up:
Faulty cords
Verify that you have wired up the subsystem correctly. Call your supplier for
replacement if:
v Cords are missing or damaged.
v Plugs are incorrect.
v Cords are too short.
Alarm sounds and power up
See “Audible alarms” on page 52 for details.
Storage array does not recognize the subsystem
1. Verify that the interface cables from the SMC - Storage Array to the host
computer are installed correctly.
2. Verify that the LEDs on all installed drive carrier modules are illuminated
(amber).
Note: Drive LEDs will not be illuminated during drive spin up.
3. Verify that drive carrier modules have been correctly installed.
LEDs
A green LED is always used for a good or positive indication. A flashing
green/amber LED is used for non-critical conditions. A continuous red or amber
LED indicates the presence of a critical fault within the module.
An exception is the drive carrier module LED, which is amber under normal
conditions (see “Drive carrier module faults” on page 55).
Power supply units
The power supply unit provides a single external bi-color LED to indicate the
status of the power supply. When AC is applied to the PSU and standby voltages
are available, the LED will blink green. The LED will be solid green when all
power outputs are available. The LED will be solid amber when the power supply
has failed (shut down due to over current, shut down due to over temperature, or
a predictive failure).
© Lenovo 2008. Portions © IBM Corp. . 49