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Abstract

Methods and apparatus for effecting a processor- and platform-assisted NVDIMM solution using standard DRAM and consolidated storage. The methods and apparatus enable selected data in DRAM devices, such as DIMMs to be automatically copied to a persistent storage device such as an SSD in response to detection of a power unavailable event or an operating system error or failure without any operating system intervention. In one aspect, a platform includes a power supply and a temporary power source, such as a capacitor-based energy storage device, a small battery, or a combination of the two, either integrated in the power supply or separate. When power becomes unavailable, the temporary power source is use to continue to provide power to selected components in one or more power protected domains. The energy stored in the temporary power source is sufficient to temporarily power the components to enable DRAM data to be written to the persistent storage device. Upon system restart, the previously-stored DRAM data is restored to one or more DRAM devices from which the data was originally copied.

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First Claim