Chapter 4: Server troubleshooting
31
Callout
Description
2
Temperature indicator. The indicator flashes amber if the system experiences a thermal
error. For example, a temperature is out of range or fan fails.
3
Memory indicator. The indicator flashes amber if a memory error occurs.
4
Drive indicator. The indicator flashes amber if a drive fails. Green indicates normal
operation.
5
Electrical indicator. The indicator flashes amber if the system experiences an electrical
error. For example, voltage is out of range or a power supply or voltage regulator fails.
6
PCIe indicator. The indicator flashes amber if a PCIe card experiences an error
About drive monitoring
The LEDs on the front of each drive indicate when there is a problem, such as a failed or failing drive. If
a drive fails or is failing, contact
Customer Support
to obtain a replacement drive of the same type, size,
and speed.
The drives in the front panel store user and Federation data and are protected by RAID, which provides
different protection for each model:
■ A CN-2000, CN-2200, or CN-3000 model can tolerate up to two hard disk drive (HDD) failures and
one solid state drive (SSD) failure simultaneously without data loss.
■ A CN-5000 can tolerate up to 4 HDD failures and one solid state drive (SSD) failure simultaneously
without data loss. Of the four HDDs, two of the drives must be in one drive set and the other two
drives must be in a different drive set.
Figure 17: Disk drive LEDs
Each hard drive carrier has two LEDs that indicate the state of the physical disk. The green activity LED
(callout 1) flashes whenever the drive is accessed. The bicolor (green/amber) LED (callout 2) provides
drive status information as detailed below.
Note:
The LEDs are in the same location and use the same icon, even if the drive is oriented vertically as in
the CN-5000.