DataDirect Networks EF3015, Руководство по установке

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Troubleshooting
E F 3 0 1 5 S e t u p G u i d e ( R e v A )
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5.4 Controller failure in a single-controller configuration
Cache memory is flushed to CompactFlash in the case of a controller failure or power loss.
During the write to CompactFlash process, only the components needed to write the cache
to the CompactFlash are powered by the super-capacitor. This process typically takes 60
seconds per 1 Gbyte of cache. After the cache is copied to CompactFlash, the remaining
power left in the super-capacitor is used to refresh the cache memory. While the cache is
being maintained by the super-capacitor, the Cache Status LED flashes at a rate of 1/10
second off and 9/10 second on..
If the controller has failed or does not start, is the Cache Status LED
on/blinking?
Answer Actions
No, the Cache LED status is off, and the
controller does not boot. If valid data is thought to be in Flash, see
"Transporting
cache via professional services" ; otherwise, replace
the controller.
No, the Cache Status LED is off, and the
controller boots. The system is flushing data to disks. If the problem persists,
replace the controller.
Yes, at a strobe 1:10 rate - 1 Hz, and the
controller does not boot. See "Transporting cache via professional services" .
Yes, at a strobe 1:10 rate - 1 Hz, and the
controller boots. The system is flushing data to disks. If the problem persists,
replace the controller.
Yes, at a blink 1:1 rate - 1 Hz, and the
controller does not boot. See "Transporting cache via professional services" .
Yes, at a blink 1:1 rate - 1 Hz, and the
controller boots. The system is flushing data to disks. If the problem persists,
replace the controller.
Transporting cache via professional services
IMPORTANT : Transportable cache only applies to single-controller
configurations. In dual-controller configurations, there is no need to transport a failed
controller’s cache to a replacement controller because the cache is duplicated
between the controllers.
To preserve the existing data stored in the CompactFlash, you must transport the
CompactFlash from the failed controller to a replacement controller. To transport cache,
you must return the controller module to a maintenance depot, for servicing by qualified
personnel.
C
AUTION
: Transporting of cache must be performed by a qualified service
technician.