US 11,030,100 B1 · Expansion of HBA write cache using NVDIMM

Abstract

Embodiments relate to a system, program product, and method for expanding the retention capacity of a write cache on a host bus adaptor (HBA) device through the use of non-volatile dual in-line memory modules (NVDIMMs). At least a portion of the existing NVDIMM capacity is leveraged to temporarily retain data that is to be written to persistent storage to reduce the potential for data loss during external electric power disruptions. A NVDIMM HBA Write Cache Module (NHWCM) facilitates the data file traffic transmission and I/O command generation and transmission between a processing device, the HBA device, the NVDIMMs, and the persistent storage.

Claims20

Dependent claims

A computer system comprising:

a processing device;
a host bus adaptor (HBA) in communication with the processing device;
at least one persistent storage device in communication with the HBA;
a memory operatively coupled to the processing device, the memory comprising at least one non-volatile dual in-line memory module (NVDIMM), the memory further comprising a NVDIMM HBA Write Cache Module (NHWCM), the NHWCM in communication with the HBA and the NVDIMM, the NHWCM configured to:
determine there is a least one file to be written to the persistent storage from the processing device;
determine that the NVDIMM includes sufficient storage capacity for storage of the at least one file;
write the at least one file to the NVDIMM;
determine that the HBA is available to receive the at least one file from the NVDIMM;
and
write the at least one file to the persistent storage from the NVDIMM through the HBA.

7 more elements

Dependencies are inferred from the claim text.

Expansion of HBA write cache using NVDIMM

Life of this patent

Expansion of HBA write cache using NVDIMM

Life of this patent

Abstract

Claims20