Transportable Cache Module for a Host-Based Raid Controller

A transportable cache module comprising:

• a primary connection coupled to a primary memory bus;
• a secondary connection coupled to a secondary memory bus;
• a nonvolatile memory module;
• a module controller, wherein the module controller is operative to copy a protected region of memory from a protected memory module to a nonvolatile region of memory on the nonvolatile memory module;
• and
• an independent power source, wherein the independent power source is operative to supply power to the protected memory module, the nonvolatile memory module and the module controller.

A method for saving the contents of a cache to a transportable cache module comprising:

• supplying power to a protected memory module, a nonvolatile memory module, and a module controller, wherein the power is supplied by an independent power source;
• isolating the protected memory module from a plurality of memory modules;
• copying a protected memory region on the protected memory module to a nonvolatile memory region on the nonvolatile memory module, wherein the copying is performed by the module controller;
• and
• powering off the independent power source after the protected memory region has been copied to the nonvolatile memory region.

An information handling system comprising:

• a transportable cache module;
• a protected memory module;
• a first memory window residing on the protected memory module, wherein the first memory window is reserved to a host-based RAID controller;
• and
• a second memory window residing on the protected memory module, wherein the second memory window is managed by an operating system.