Notes

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17 is one embodiment of a flowchart exhibiting the process by which the configuration manager suspends and resumes the state of an adapter beneath the Windows NT Operating System through the scorching swap proven in FIG. The configuration supervisor 500 reads the entire BARs in the configuration area for every adapter 310, in search of a BAR which describes I/O resources. For each such BAR, the LSL 502 configuration areas are searched for an I/O port handle which matches this BAR. This process continues until a match is found, figuring out the LSL 502 configuration house which describes this adapter.
These commands will be mentioned in larger detail below with reference to FIG. eleven is a block diagram illustrating a portion of the Windows NT Operating System and a configuration supervisor which both reside on the fault tolerant laptop system, shown in FIGS. It is well-acknowledged that there's a lack of reliability and availability of most standards-based servers. Server downtime, ensuing either from hardware or software faults or from regular maintenance, continues to be a significant downside.
A fault tolerant laptop will enable for a fault to be isolated and not propagate by way of the system thus providing full or minimal disruption to continuing operation. Fault tolerant methods also present redundant elements, such as adapters, so service can proceed even when one element fails. Existing systems additionally don't have an interface to manage the altering or addition of an adapter. The technique as outlined in claim 1, whereby the programmable mass storage adapter is configured to communicate with a Peripheral Component Interconnect bus. The methodology as outlined in declare 1, whereby the programmable mass storage adapter is configured to communicate with an Industry Standard Architecture bus. The methodology as defined in declare 1, whereby the programmable mass storage adapter is configured to communicate with an Extended Industry Standard Architecture bus.
If the consumer has requested driver droop, the configuration manager 500 calls the DriverControl entry point with the operation code ‘5’ requesting a temporary shutdown. The MSM 504 doesn't remove the adapter driver 308 from the memory, however leaves it in place and preserves its current state. ssd7cs2211-960-rb receives this call and shuts down all communication to the adapter. Otherwise, if the user has requested a driver resume, the configuration supervisor 500 calls DriverControl entry point with the operation code ‘6’ state 928. The HSM 508 receives this call and resets the adapter 310.
The HSM 508 contains the functionality to initialize, reset and shutdown the adapter 308. The HSM 508 additionally handles packet transmission and reception to and from every adapter 308. A significant component of value is hiring administration personnel.
5 is a block diagram illustrating sure gadget driver components of the NetWare Operating System and one embodimennt of a configuration manager which reside on the fault tolerant pc system, proven in FIG. 2 is a block diagram displaying a first embodiment of a a quantity of bus configuration connecting I/O adapters and a community of microcontrollers to the clustered CPUs of the fault tolerant pc system, proven in FIG. U.S. Pat.
Traditionally, the adapter driver for one or more the mass storage adapters is the primary adapter driver loaded by WinNT, so that different drivers have access to a mass storage medium. WinNT then masses the rest of the drivers . Starting in a call state 900 in FIG. 9A, the configuration manager 500 checks whether the adapter's class is of the type “LAN” . For PCI systems, each adapter maintains info in its PCI configuration house indicating its class.
If no match is found, then LSL 502 has no logical board describing this adapter, and no driver exists to service this board. Before starting in hard disk not detected lenovo , an occasion has occurred, corresponding to a failure of an adapter, and the operator has been informed of the failure. The operator has procured a substitute part, and is decided to restore the computer system a hundred presently. The operator might have another purpose for deciding to take away and substitute a card, corresponding to upgrading to a new version of the card or its firmware. A person signifies his intention to swap an adapter through the NetWare person interface 518 or a distant SNMP agent 520 (FIG. 5). 14 is one embodiment of a flowchart exhibiting the method by which the configuration manager handles a request to perform the new add of an adapter beneath the Windows NT Operating System, shown in FIG.
These faults could additionally be due, for example, to the device driver, the device firmware, or hardware which does not properly deal with concurrent errors, and sometimes causes servers to crash or grasp. The result is hours of downtime per failure, while a system administrator discovers the failure, takes some motion, and manually reboots the server. In many instances, data volumes on onerous disk drives turn out to be corrupt and must be repaired when the quantity is mounted. A dismount-and-mount cycle could result from the lack of “hot pluggability” or “hot plug” in present standards-based servers. Hot plug refers to the addition and swapping of peripheral adapters to an operational computer system.
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