JP2005004381A - Power supply management method and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply management method which can shut down a server normally even if a time when the OS of the server is shut down is extended, and to provide a device therefor. <P>SOLUTION: In an uninterruptible power supply system, a server 11 which receives power from an uninterruptible power supply device (USP41) is connected to the USP41 on the same network. When instructions for shutting down the OS are transmitted to the server 11 from the USP41 via the network, a network command is transmitted to the server 11 from the USP41, and the supply of electric power from the USP41 is stopped after a response signal to the network command is no longer transmitted from the server 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power management method and apparatus for an uninterruptible power supply system configured by connecting a plurality of servers receiving power supply from an uninterruptible power supply apparatus on the same network as the uninterruptible power supply apparatus.
[0002]
[Prior art]
In general, an uninterruptible power supply (UPS) having a backup battery or a generator inside is always supplied from a commercial power supply to a system load such as a computer that requires uninterruptible power. It is widely used as a device that supplies power and allows the system to operate as it is even when a commercial power supply fails. The backup battery used in the UPS has a capacity that can operate the system for several minutes even if it has a small capacity, and the computer system can be safely shut down (terminated) during that time. Some large-capacity UPSs with an internal generator can operate the system for several days.
[0003]
FIG. 7 is a system configuration diagram showing an example of a conventional uninterruptible power supply system. In this system, a UPS 1 that can be connected to a network, and a plurality of server computers (hereinafter simply referred to as servers) 11 and 12 that receive power supply from the UPS 1 are connected by a hub (HUB) 2 on the same network such as a LAN. The system is configured with.
[0004]
FIG. 8 is a timing chart for explaining a conventional shutdown processing procedure. In the uninterruptible power supply system of FIG. 7, when an external commercial power supply fails or when the schedule is turned off, an OS shutdown command is sent from the UPS 1 to the servers 11 and 12 via the network, so that the OS shutdown in each of the servers 11 and 12 is ensured. After being executed, it is necessary to stop the output of UPS1.
[0005]
As shown in FIG. 8A, the server 11 is shut down by adding a service during the operation process of the server 11, and the OS shutdown processing time (Tsd1) of the server 11 from UPS 1 is an uninterruptible power supply system. The OS shutdown time (Tsd0) in the server 11 at the initial time may be longer. In this case, as shown in FIG. 8C, if the time until the output stop by the initial setting of UPS1 is fixed as T0, the server 11 performs an abnormal termination process (dirty shutdown). In order to avoid such dirty shutdown, resource management by the server 11 such as manually variably setting a delay time from the shutdown command C1 of the UPS 1 to the output stop of the UPS 1 (hereinafter referred to as UPS output stop delay time). I was going.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-202986
[Problems to be solved by the invention]
In such shutdown control of the power management apparatus, if the server service or the like increases after setting the UPS output stop delay time, the server OS shutdown time is extended, so the server is in a dirty shutdown state during application operation of the server. There was a problem of destroying server data.
[0008]
An object of the present invention is to provide a power management method and apparatus capable of normally shutting down a server even when the OS shutdown time of the server is extended.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, there is provided a power management method for an uninterruptible power supply system configured by connecting a plurality of servers that receive power supply from the uninterruptible power supply on the same network as the uninterruptible power supply. In this power management method, when an OS shutdown command is sent from the uninterruptible power supply to each server via the network, a network command is sent from the uninterruptible power supply to the server, and the network command from the server is sent to the server. After the response signal disappears, the power supply from the uninterruptible power supply is stopped.
[0010]
Moreover, in order to achieve the said objective, the power supply management apparatus comprised by connecting the some server which receives electric power supply from an uninterruptible power supply on the same network as the said uninterruptible power supply is provided. The power management apparatus includes: a transmission unit that transmits a network command to each server when an OS shutdown command is sent from the uninterruptible power supply to the server; and the server makes no response to the network command. It is comprised from the measurement means which measures time until it becomes.
[0011]
According to this power management apparatus, the output of the uninterruptible power supply can be stopped reliably and in an optimum time by obtaining the shutdown time necessary for the shutdown of each server, and the time required for the shutdown can be shortened. .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
1 is a block diagram showing a configuration of an uninterruptible power supply system according to Embodiment 1 of the present invention. In this uninterruptible power supply system, a UPS 41 has a built-in power supply monitoring control program and a network interface function, and is connected to the server 11 via the hub 2.
[0013]
FIG. 2 is a timing chart showing a shutdown processing procedure according to the first embodiment.
Here, the OS shutdown time Tsd is the time until the server 11 completes the OS termination processing by the shutdown command C1. After sending the OS shutdown command C1 from the UPS 41 to the server 11, a network command such as a ping signal shown in FIG.
[0014]
FIG. 2D shows a response signal R1 to the UPS 41 with respect to the ping signal. In the UPS 41, after confirming that there is no network command response from the server 11, the UPS output voltage of the UPS 41 is set to zero. The ping signal can be realized as an ICMP (Internet Control Message Protocol) echo command used for checking whether or not an IP packet reaches the communication destination server 11 in the TCP / IP network.
[0015]
In the conventional OS shutdown control system as shown in FIG. 8, after the UPS output stop delay time T0 is set, the server service increases and the server OS shutdown time Tsd is extended. Therefore, if a dirty shutdown occurs while the server application is running, the server data is destroyed.
[0016]
Therefore, in the first embodiment, when OS shutdown control is performed, an OS shutdown command C1 is sent to the server 11, and then a network command is transmitted to the server 11 at a certain period. The power supply from the UPS 41 is stopped at time t1 when there is no response signal to the network command.
[0017]
As described above, in the shutdown process of the first embodiment, even when the OS shutdown time of the server 11 is extended, the server 11 is normally shut down to prevent a dirty shutdown in the server 11. . Therefore, after sending an OS shutdown command, simply send a network command to the server 11 at a fixed interval, and no matter what services are added to the server 11, the OS shuts down normally without a dirty shutdown. Can be implemented.
[0018]
(Second Embodiment)
FIG. 3 is a block diagram showing the configuration of the uninterruptible power supply system according to Embodiment 2 of the present invention.
[0019]
In the uninterruptible power supply system shown in FIG. 3, the master server 11 and the slave server 12 constitute a network by the hub 2. The UPS 61 supplies power to the master server 11 and the slave server 12. After sending the OS shutdown command C1 to the slave server 12, the master server 11 sends a network command similar to the ping in FIG. The master server 11 has a program for monitoring and controlling the power supply (UPS 61). The master server 11 and the UPS 61 are connected via an RS-232C interface, and the system configuration is such that the UPS 61 is directly controlled from the master server 11.
[0020]
FIG. 4 is a timing chart showing a shutdown processing procedure according to the second embodiment. In this figure, on the master server 11, the OS shutdown time (= T7) of the slave server 12 is measured when the operation schedule is turned off by a program for monitoring and controlling the power supply state of the UPS 61. Based on the OS shutdown time T7 measured here, the time from when the OS shutdown command C1 is sent to the slave server 12 when the power failure of the commercial power supply is detected until the output of the UPS 61 is stopped (UPS output stop delay time = T7). Has been decided. Also, the power supply monitoring program on the master server 11 sends the OS shutdown command C1 to the slave server 12, and sends the output stop command with delay time C3 to the UPS 61, and then shuts down the OS of the master server 11. It has. Therefore, by measuring the OS shutdown time of the slave server 12 by the master server 11, the output of the UPS 61 can be stopped reliably and in an optimum time, and the time required for the shutdown can be shortened.
[0021]
(Third embodiment)
FIG. 5 is a block diagram showing a configuration of an uninterruptible power supply system according to Embodiment 3 of the present invention.
[0022]
In the system of the third embodiment, a plurality of servers 11 to 13 that are powered from the UPS 81 form a network by the hub 2. Similarly to the first embodiment (FIG. 1), the UPS 81 includes a power supply monitoring control program and a network interface function.
[0023]
FIG. 6 is a timing chart showing a shutdown processing procedure according to the third embodiment. In FIG. 6, the UPS 81 sequentially sends OS shutdown commands C1, C2, and C3 to a plurality of servers 11 to 13 connected to the UPS 81. Thereafter, a network command such as ping is transmitted to each of the servers 11 to 13, and the times T1, T2, and T3 required for OS shutdown in each of the servers 11 to 13 are measured based on their response times.
[0024]
Therefore, the UPS 81 can confirm that the OSs of all the servers 11 to 13 are shut down, and can stop the output after the UPS output stop delay time T9 has elapsed from the first shutdown command C1. Further, when the commercial power supply voltage becomes 0 after a power failure or the like, a shutdown command from the UPS 81 is sent in the order of servers with a long OS shutdown time in the order of C3, C1, and C2. Thereby, the time required for the shutdown of the servers 11 to 13 can be shortened.
[0025]
As described above, according to the power management device of the third embodiment, after sending an OS shutdown command, a network command (ping signal) is sent to the server at a certain period, and any server is sent to the server. Even if such a service is added, the OS can be shut down normally without the server being shut down dirty.
[0026]
In this power management apparatus, the OS shutdown time is measured, and when the OS shutdown command is subsequently sent, the shutdown time is sent in order of long shutdown time. Therefore, output from the UPS to a plurality of servers can be stopped at the optimum time. In addition, the time required for shutting down a plurality of servers can be shortened, and there is an effect that it is possible to save time and effort for manually setting and changing the delay time.
[0027]
Furthermore, since the time required for shutdown can be shortened, the battery backup time at the time of commercial power failure can be shortened, so that not only the life of the battery built in the UPS but also the life of the uninterruptible power supply main body can be extended.
[0028]
【The invention's effect】
As described above, according to the power management method and apparatus of the present invention, the reliability of OS shutdown of a server using a network can be easily improved.
[0029]
In addition, the power management apparatus of the present invention can perform a dirty shutdown regardless of what services are added to the server by simply sending a network command to the server at regular intervals after sending an OS shutdown command. OS shutdown can be normally performed.
[0030]
Further, in the power management device of the present invention, by measuring the OS shutdown time, the UPS output can be stopped reliably and in an optimum time, and the time required for the shutdown can be shortened.
[0031]
Furthermore, the power management device of the present invention saves time and effort for manual delay time setting and change, and shortens the time required for shutdown, thereby shortening the battery backup time during a commercial power failure. This has the effect of extending the life of the uninterruptible power supply as well as the built-in battery.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an uninterruptible power supply system according to Embodiment 1 of the present invention.
FIG. 2 is a timing chart showing a shutdown processing procedure according to the first embodiment.
FIG. 3 is a block diagram showing a configuration of an uninterruptible power supply system according to Embodiment 2 of the present invention.
FIG. 4 is a timing chart showing a shutdown processing procedure according to the second embodiment.
FIG. 5 is a block diagram showing a configuration of an uninterruptible power supply system according to Embodiment 3 of the present invention.
FIG. 6 is a timing diagram illustrating a shutdown processing procedure according to the third embodiment.
FIG. 7 is a system configuration diagram showing an example of a conventional uninterruptible power supply system.
FIG. 8 is a timing chart for explaining a conventional shutdown process procedure;
[Explanation of symbols]
11, 12, 13 Server 2 Hub 1, 41, 61, 81 UPS

Claims (4)

In the power management method of the uninterruptible power supply system configured by connecting a plurality of servers that receive power supply from the uninterruptible power supply on the same network as the uninterruptible power supply,
When an OS shutdown command is sent from the uninterruptible power supply to each server via the network,
Send network commands from the uninterruptible power supply to the server,
A power management method, comprising: stopping power supply from the uninterruptible power supply after a response signal from the server to the network command disappears. In the power management device configured by connecting a plurality of servers that receive power supply from the uninterruptible power supply on the same network as the uninterruptible power supply,
Transmitting means for transmitting a network command to each server when an OS shutdown command is sent from the uninterruptible power supply to the server;
Measuring means for measuring the time until each of the servers becomes unresponsive to the network command;
A power management apparatus comprising: obtaining a shutdown time required for shutting down each of the servers. 3. The power management according to claim 2, wherein the time from when a shutdown command is sent to each server to when the output of the uninterruptible power supply is stopped is determined based on the shutdown time measured by the measuring means. apparatus. 4. The power management apparatus according to claim 3, wherein when the OS shutdown command is sent to each of the servers, the uninterruptible power supply is controlled so that the shutdown time is sent in the order of the longest shutdown time.

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