Managing persistent memory regions across multiple protocols

A device, comprising:

• a processor;
• a memory comprising a Persistent Memory Region (PMR) configured to operate under multiple protocols through a single interface wherein a first protocol is a Non-Volatile Memory Express (NVMe) protocol;
• a Non-Volatile Memory (NVM) array organized into logical blocks;
• and
• a persistent memory device (PMD) organized into logical blocks:
• wherein PMR data is loaded into the PMD from the NVM array under the NVMe protocol;
• wherein the PMD comprises extended logical blocks to the NVM array under a second protocol;
• and
• a protocol-switching logic configured to direct the processor to:
• determine a protocol for use within the device;
• wherein if the determined protocol is an NVMe protocol:
• PMR usage is determined;
• data associated with the PMR is loaded;
• and
• the device is operated under the determined NVMe protocol;
• wherein if the determined protocol is a second protocol, the device is operated under the determined second protocol;
• and
• wherein the protocol-switching logic is further configured to initialize the device after determining a protocol.

A device, comprising:

• a processor;
• a memory comprising a Persistent Memory Region (PMR) configured to operate under multiple protocols through a single interface wherein a first protocol is a Non-Volatile Memory Express (NVMe) protocol and a second protocol is a Secure Digital Express (SDX) protocol;
• and
• a protocol-switching logic configured to direct the processor to:
• initialize the device;
• and
• determine a protocol for use with the device:
• wherein if the determined protocol is an NVMe protocol:
• a PMR usage threshold is determined;
• data associated with the PMR is loaded;
• and
• the device is operated under the determined NVMe protocol;
• wherein if the determined protocol is an SDX protocol, the PMR is operated under the SDX protocol;
• wherein the PMR is configured to provide performance enhancements under the SDX protocol;
• wherein the device is configured to physically couple with multiple host-computing devices;
• and
• wherein the device is further configured to be hot-swappable between multiple host-computing devices.