Method to virtualize PCIe controllers to support boot/hibernation/crash-dump from a spanned virtual disk
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United States of America Patent
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Jan 16, 2018
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app pub date -
Mar 18, 2016
filing date -
Mar 18, 2016
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Abstract
An information handling system recognizes PCIe-based RAID volumes, including RAID virtual disks spanning two or more NVMe storage drives, while performing boot, hibernation, and crash-dump functions, rather than treating each storage device and its corresponding storage controller separately. The information handling system may perform a two-tiered discovery/initialization process during which a storage protocol function driver detects and initializes physical storage controllers, a storage controller bus driver virtualizes all physical storage controllers of a particular storage protocol and exposes a single virtualized storage controller for the protocol. A virtual miniport driver may then detect RAID volumes associated with the virtual storage controller and initialize the detected RAID stack(s).
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