Notes

Ep2055163a4
8 is one embodiment of a flowchart displaying the method by which a person performs a scorching swap of an adapter on a fault tolerant computer system, shown in FIGS. 7 is one embodiment of a flowchart showing the method by which a user performs a scorching add of an adapter on a canister on a fault tolerant laptop system, proven in FIG. In one embodiment of the invention, the configuration info is calculated on an ad-hoc foundation. In one other implementation of the invention, the configuration data is maintained in a template. The template relies upon the configuration info of an adapter of the identical kind situated on a reference system. ethernet cables is another fault tolerant computer system.
The configuration manager 500 receives the request and generates a packet to suspend I/O . The suspended I/O packet incorporates instructions to the Filter CDM 513 to freeze a selected mass storage adapter. The Filter CDM 513 receives the packet from the configuration manager 500 .
The operator has procured a substitute part, and is determined to restore the pc system a hundred at this time. The operator might have some other reason for deciding to take away and exchange a card, similar to upgrading to a brand new model of the card or its firmware. A user signifies his intention to swap an adapter through the NetWare person interface 518 or a distant SNMP agent 520 (FIG. 5). 17 is one embodiment of a flowchart exhibiting the process by which the configuration manager suspends and resumes the state of an adapter underneath the Windows NT Operating System during the scorching swap shown in FIG. 14 is one embodiment of a flowchart exhibiting the process by which the configuration manager handles a request to carry out the new add of an adapter beneath the Windows NT Operating System, shown in FIG. 10A, 10B and 10C are flowcharts showing one course of by which the configuration supervisor may droop and restart I/O for mass hot swapping storage adapters underneath the NetWare Operating System, present in FIG.
1 is a block diagram exhibiting one embodiment of a fault tolerant pc system. Typically the pc system is one server in a community of servers and is communicating with client computers. Such a configuration of computers is often referred to as a client-server architecture.
The NetWare Operating Systems name to retrieve configuration desk data is GetMLIDConfigurationTableEntry. Proceeding to state 808, for a canister system, the consumer removes the canister containing the failed card and exchanges an old adapter with a new adapter. The person then reinserts the canister. For a non-canister system, the person swaps the old adapter for the new adapter within the slot. The main function of the Filter CDM 516 is to locate every HAM 512, register adapter occasions, and course of the I/O droop and I/O restart requests from the configuration manager 500. These commands might be discussed in larger element under close to FIG.
In many cases, information volumes on onerous disk drives turn into corrupt and must be repaired when the amount is mounted. A dismount-and-mount cycle may end result from the dearth of “hot pluggability” or “hot plug” in current standards-based servers. Hot plug refers again to the addition and swapping of peripheral adapters to an operational pc system.
Dell Systems with 4GB of reminiscence might present less reminiscence in Microsoft Windows. Windows Vista® mechanically allocates a certain amount of memory for system use. The amount varies depending on the gadgets which would possibly be installed on the computer however is no much less than 1 MB and may be as such as 1 GB. Only the unallocated reminiscence is reported by Vista.
An instance of such a solution is described in U.S. No. 5,210,855 to Thomas M. Bartol. The method as outlined in claim 1, additionally comprising receiving a request for the new add of the programmable mass storage adapter from a person interface program. For canister techniques with a PCI bus, at state 810, the recent plug hardware 318 reapplies energy to the slot or the canister.
The configuration supervisor 500 suspends the I/O for each adapter that is situated on the canister which was chosen by the person to receive the new card. In one other embodiment, the SNMP agent 520 or the NetWare User Interface 518 requests the configuration manager to droop the canister. The configuration manager 500 then locates all gadgets and suspends the I/O for each adapter positioned on the selected canister. In various embodiments of the invention, the hot plug system executes on an I/O platform. In a primary architectural embodiment of the invention, the I/O platform and its devices plug in as a single adapter card right into a slot. In a second architectural embodiment of the invention, the bridge is integrated onto the motherboard, and scorching plug adapters plug in behind the bridge.
The adapter units 238 and 240 are electrically and mechanically related to the PC buses 234 and 236 by PC slots similar to slot 241. Hence, an adapter is “plugged” into a slot. In one embodiment of the invention, every slot could also be independently powered on and off.
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