In the most SSDs, data is temporarily stored into DRAM cache or Flash cache. This takes advantage of the fast response time of DRAM to improve the performance of the SSDs.
The Host sends commands to the SSD controller to inform the controller that power will be turned off
The controller sends a confirmation message to the Host
Data saved in cache will be written into Flash
The in transmission data cannot be saved nor transferred to Flash
Data stored in SSD cannot be updated correctly, resulting in data loss, and the device cannot even be powered up
ADATA Offers Two Data Protection Technologies
A⁺ Power Protect
All ADATA's industrial-grade SSDs support A⁺ Power Protect.
Automatically detects external voltage through voltage detection circuit (VDT)
When voltage drops to 2.8V/2.7V, the SSD controller will stop accepting new write commands from the host
Power Loss Protection (PLP)
Featuring voltage detection circuit with A⁺ Power Protect technology
Additional Tantalum polymer capacitors to provide enough power for SSD
When voltage drops to 4V, PLP technology is triggered and data in the cache will be written into Flash in 75ms
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