Dell IP4700 Service Guide - Page 91

Light, Meaning When Lit, with an IP4700 and DAE in rackmount installations.

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The Standby Power Supply (SPS) 4 Table 4-1 See Table 4-1 for the meanings of the SPS status LEDs. DC SPS Status LEDs Light SPS fault - Amber Replace battery - Amber Meaning When Lit The SPS has an internal fault. The SPS may still be able to run on line, but write caching cannot occur. Replace the SPS as soon as possible. See "Replacing an SPS in a Rackmount System" on page 4-12. The SPS battery pack can no longer support loads. When the battery reaches this state, and no other on-line SPS is connected to the IP4700, the file server flushes all cache data to disk and disables caching. This LED stays active until the SPS completes a successful power test. Replace the SPS as soon as possible. See "Replacing an SPS in a Rackmount System" on page 4-12. On battery - Amber On-line - Green The ac line power is no longer available and the SPS is supplying dc output power from its battery. When battery power comes on, and no other on-line SPS is connected to the IP4700, the file server writes all cached data to disk; and the event log records the event. When this LED is steady, the SPS is ready and operating normally. When this LED blinks, the SPS is being charged. In either case, the output from the SPS is supplied by ac line input. For a rackmount installation, two SPS units fit in a tray beneath the IP4700 to which they connect. Figure 4-2 shows the SPS in a cabinet with an IP4700 and DAE in rackmount installations. About the SPS 4-3

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4
About the SPS
4-3
The Standby Power Supply (SPS)
See Table 4-1 for the meanings of the SPS status LEDs.
For a rackmount installation, two SPS units fit in a tray beneath the
IP4700 to which they connect. Figure 4-2 shows the SPS in a cabinet
with an IP4700 and DAE in rackmount installations.
Table 4-1
DC SPS Status LEDs
Light
Meaning When Lit
SPS fault - Amber
The SPS has an internal fault. The SPS may still be able
to run on line, but write caching cannot occur. Replace
the SPS as soon as possible. See “Replacing an SPS in
a Rackmount System” on page 4-12.
Replace battery - Amber
The SPS battery pack can no longer support loads.
When the battery reaches this state, and no other on-line
SPS is connected to the IP4700, the file server flushes all
cache data to disk and disables caching. This LED stays
active until the SPS completes a successful power test.
Replace the SPS as soon as possible. See “Replacing an
SPS in a Rackmount System” on page 4-12.
On battery - Amber
The ac line power is no longer available and the SPS is
supplying dc output power from its battery. When battery
power comes on, and no other on-line SPS is connected
to the IP4700, the file server writes all cached data to
disk; and the event log records the event.
On-line - Green
When this LED is steady, the SPS is ready and operating
normally. When this LED blinks, the SPS is being
charged. In either case, the output from the SPS is
supplied by ac line input.