Powerguard is a Power Loss Protection (PLP) Technology
Cervoz developed in-house to protect the storage firmware and prevent ongoing write-in data loss during a power outage. Cervoz's Powerguard products are more durable and stable, with a discharge time that is up to 40 times faster than the standard SSD.
The technology functions by providing additional power during an unexpected power outage so that the SSD can complete the Flash write operation in progress and thus protect data integrity. When the module’s controller senses that power supplied is below a certain, predetermined level, it will inform the host to stop sending more data. Although data transmission has stopped, data remains in the DRAM, so the capacitors will provide the extra power to enable the remaining data to be flushed out to NAND and protect the firmware and mapping table simultaneously.