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Solid Minute Brief: Protecting Your Data During Power Loss

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Solid Minute Brief: Protecting Your Data During Power Loss

When the lights go out, the computer screens go black, everyone says, “Ahhh!”, and you realize that the power is gone, we all wonder if the hard work we’ve just done has been for naught. On the data center and enterprise administrator’s end, a larger magnitude of concern swells for the thousands of storage drives at stake, whether they have completed their last write or self-maintenance operation prior to the power outage. Is it possible that significant data loss was prevented by means of a brilliant new technology?

It is! However, this new innovative technology is not directly in the PC or Server, but embedded in the Solid-State Drive (SSD) Storage Device. Data safety features offered in Solid-State Drives can prepare for unexpected power loss by protecting the system and the data using a Power Loss Imminent (PLI) feature.

What Happens to Storage During Power Loss?
During a ‘clean’ shutdown, a host system will initiate the ATA STANDBY IMMEDIATE command to the SSD and give it enough time to prepare for the shutdown. This substantially enhances the ability of the SSD to save data which is currently in transition or in-flight (in temporary buffers) to the non-volatile NAND Flash* media.

During an unsafe power shutdown or a loss of power in SSDs that do not have this PLI feature, the SSD abruptly loses power prior to receiving the ATA STANDBY IMMEDIATE command. Without this critical command or other PLI protection mechanism, the SSD would lose any data which is sitting in temporary buffers when the power is lost.

Read the full Protecting Your Data During Power Loss Solid Minute Brief.