ATTO Technology FastStream SC 5550 Installation And Operation Manual page 11

Fibre Channel port: A lighted green LED indicates
link and off indicates no link. A separate green LED
indicates FC speed, lit indicates 4Gb/s, and off
indicates 1- or 2Gb/s.
SAS/SATA device: A green LED lit on indicates
activity and off means no activity.
LEDs on the faceplate are:
A Ready LED is lighted green to indicate ready and
off to show not ready.
An Alert LED is lighted yellow to show an alert
condition.
Power: A lighted green LED indicates power has
been turned on to the appliance.
Fibre Channel port: Bicolor LED indicates FC
speed. If it is off, speed is 1Gb/s, green indicates
2Gb/s, and yellow indicates 4Gb/s FC. A separate
green LED indicates activity if it is lit and no activity if
it is off.
SAS/SATA device: A green LED on each connector
indicates activity if it is lit.
NVCache LED Indicators
Unlit: The LED is unlit if you purchased a 5550, 8550
or 8250 without the CacheAssure feature. Unlit means
that the module is not installed nor was it expected to
Exhibit 1.1-1 The connector side of the FastStream SC 5550.
Exhibit 1.1-2 Connector side detail.
Exhibit 1.1-3 The front panel of the FastStream SC 5550.
be there. The LED is also unlit immediately after a
power failure, while a CacheAssure backup is being
performed.
Solid amber: The LED is solid amber if a problem has
occurred with the CacheAssure module. Problems can
include detecting a module but not a supercap (or vice
versa) or extended post failure.
Fast blinking amber: The LED blinks amber quickly
when in Cache recovery.
Slow blinking green: The LED blinks slowly as green
during bootup when the supercap is charging. Slowly
blinking green also indicates that POST has
completed without errors and both modules are
present and presumed working (checked again after a
few minutes). During this time period when the LED is
slowly blinking, there is no guarantee that the
supercap has enough power to perform CacheAssure
backups.
Solid green: The LED is lit solid green when the
supercap has fully charged and the system is working
properly. At this point, if a power failure happens there
is enough power to perform CacheAssure backups.
Fast blinking green: The LED blinks green quickly
after a successful CacheAssure backup, caused by a
power fail condition.
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