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US 8,285,911 B2Granted
Computer apparatus, computer system and adapter carry-over method
AssigneeHitachi, Ltd.
InventorMinoru Itakura
Life of this patent
Estimating the term…
Abstract
To obtain a computer that can change over from the active system to the standby system without reconnecting the I/O adapters. The computer according to the present invention carries over the identifiers logically identifying connection paths between computer modules and I/O adapters from active computers to standby computers.
Claims8
A computer apparatus comprising:
- a plurality of computer modules including processing devices;
- an I/O adapter;
- a switch including an upstream port connected to the computer modules and a downstream port connected to the I/O adapter;
- and
- a PCI manager,
- wherein the switch
- includes a virtual switch logically connecting the upstream port and the downstream port, and
- stores a first identifier logically identifying a connection path between a computer module in an operating state and a first virtual switch and a second identifier logically identifying a connection path between the first virtual switch and the I/O adapter,
- wherein when the computer module in the operating state moves to a non-operating state, the PCI manager detecting the non-operating state issues an update instruction of the identifiers to the switch,
- wherein the switch that received the update instruction of the identifiers
- carries over the first identifier to a third identifier logically identifying a connection path between a computer module in a standby state and a second virtual switch, and
- carries over the second identifier to a fourth identifier identifying a connection path between the second virtual switch and the I/O adapter, and
- wherein the computer module in the standby state moves to the operating state after the carryovers of the identifiers.
10 more elements
An adapter carry-over method in a computer apparatus including a plurality of computer modules including processing devices, an I/O adapter, a switch including an upstream port connected to the computer modules and a downstream port connected to the I/O adapter, and a PCI manager,
- wherein the switch
- logically connects the upstream port and the downstream port, and
- stores a first identifier logically identifying a connection path between a computer module in an operating state and a first virtual switch and a second identifier logically identifying a connection path between the first virtual switch and the I/O adapter,
- wherein when the computer module in the operating state moves to a non-operating state, the PCI manager detecting the non-operating state issues an update instruction of the identifiers to the switch,
- wherein the switch that received the update instruction of the identifiers
- carries over the first identifier to a third identifier logically identifying a connection path between a computer module in a standby state and a second virtual switch, and
- carries over the second identifier to a fourth identifier identifying a connection path between the second virtual switch and the I/O adapter, and
- wherein the computer module in the standby state moves to the operating state after the carryovers of the identifiers.
5 more elements
Dependencies are inferred from the claim text.