Rear Panel; Rear Panel I/O Ports For The Appliance - IBM Slicestor 3448 Manual

Table 3. HDD activity LEDs (continued)
Status
Locate
Rebuild
3. Fan failure LEDs
Shows red if the fan has an error or is missing (each indicator represents one system fan). If any
fan experiences an error or is missing, all system fans are run at full speed as a way to
compensate for the error or the missing fan. If a fan error occurs, replace the fan immediately to
avoid the risk of a system high temperature condition.
Attention: There are eight fans, and four fan assemblies. Each fan assembly consists of a pair of
fans, in a dual rotor configuration. The fan pairs are 1-5, 2-6, 3-7, and 4-8. So if fan 1 fails (the fan
led marked "1" is lit), the fan assembly 1-5, which consists of a single dual motor fan, must be
replaced. See "Replace the Fans" for details.
5. Power LED
Shows green when power is on, unlit when power is off.
7. Global failure indicator
Lights when a PSU fault or fan error or high temperature condition or any combination is
encountered.
Top Loading Drive Carrier LEDs
A single LED on the top extractor handle of each drive indicates drive activity when flashing
green.

Rear panel

The rear panel contains I/O ports, network interface ports, power supplies, and two hard disk drive
carriers.
I/O ports
The I/O ports are color-coded per the PC 99 specification. The locations of the various I/O ports are
shown in the following figure.
Figure 9. Rear panel I/O ports for the appliance
12
IBM Cloud Object Storage System: Slicestor 3448 Appliance Maintenance Manual 3409-S02/3401-S02/3403-S02
Green
Off
Flash
Red
4-Hz flash
1-Hz flash