Power cycle
safety zone*
* When in this zone, the arbiter assumes that the controller may be active. If the arbiter loses communications
with a (possibly) active controller, it must turn off power to that controller before telling the backup to become
active. Otherwise you might have two simultaneous active controllers. Because turning off power to a device
that is doing a flash write may cause corruption of data in flash memory, writes to flash memory (such as
configuration writes, strategy updates, and firmware updates) are disabled.
CHAPTER 5: SYSTEM MAINTENANCE
SNAP PAC Redundancy Option User’s Guide
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