JPH04304514A - Pseudo diskless system - Google Patents

Abstract

PURPOSE:To prevent the deterioration of the mechanic life of an auxiliary storage device, and to hold the high reliability of a system by providing an opening and closing means which turns off the power source of the auxiliary storage device after the completion of the loading of a program to a main storage device. CONSTITUTION:As for a computer system 1 which is operated only by the program 1 loaded from an auxiliary storage device 5 to a main storage memory 3, a power source 11 of the auxiliary storage device 5 is turned on when the power source 11 of the computer system is turned on, or when this system is reset. Then, this system is equipped with a switch 6A as the opening and closing means which turns off the power source 11 of this auxiliary storage device 5 by the command of a CPU 2 of this system after the loading of the program from the auxiliary storage device 5 to the storage memory 3. Therefore, the operation is stopped by turning off the power source of the auxiliary storage device, so that the consumption of mechanical parts can be prevented, the life can be extended, and then a failure rate at the time of the operation can be reduced.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention is a computer system that loads a program from an auxiliary storage device such as a hard disk to a main memory (also simply referred to as main memory), and operates only with the loaded program. The present invention relates to a pseudo diskless system as a system in which the operation of the auxiliary storage device is normally stopped. Note that in the following figures, the same reference numerals indicate the same or corresponding parts.

0002

2. Description of the Related Art In conventional computer systems, when the power of the entire system is turned on and off, the power of the auxiliary storage device is also turned on and off. Therefore, while the computer system is operating, the power to the auxiliary storage device also remains on.

0003

[Problems to be Solved by the Invention] Auxiliary storage devices such as hard disks use mechanical parts, and the operating time is limited depending on the lifespan of the parts, which increases the failure rate of the entire system. This is a factor that worsens the situation. Therefore, an object of this invention is to provide a pseudo diskless system as a highly reliable computer system that can extend the life of the mechanical parts of the auxiliary storage device as much as possible and reduce the failure rate during operation. do.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, the pseudo diskless system of claim 1 has an auxiliary storage device (5, etc.) such as a hard disk, and a main storage memory (3, etc.) from the auxiliary storage device. etc.) In a computer system (1, 10, etc.) that operates only by a program loaded therein, when the power of the computer system (11, etc.) is turned on or this system is reset, the power supply of the auxiliary storage device (11, etc.) switching means (digital output circuit 8,
switch 6A, etc.),

In the pseudo diskless system according to claim 2, in the system according to claim 1, the opening/closing means is capable of turning on the power of the auxiliary storage device according to a command from the computer as necessary;

Claim 3
In the pseudo diskless system according to claim 1 or 2, the opening/closing means connects a power source (such as 11) of an interface (such as 4) of the computer system to the auxiliary storage device to the auxiliary storage device. It shall be equipped with a means (switch 6B, etc.) to turn it on and off in accordance with when the power of the device is turned on and off, and

In the pseudo diskless system according to claim 4, in the system according to claim 3, the opening/closing means connects the connection between the interface and the internal bus of the computer system to the power source of the auxiliary storage device and the interface. Bus opening/closing means (bus disconnection circuit 7, etc.) that closes when the power is turned on and opens before the power of the auxiliary storage device and the interface is turned off.
Make sure that it is equipped with the following.

[0008]

[Operation] After loading the program from the auxiliary storage device to the main memory when the entire system is powered on or reset, the auxiliary storage device is turned off and disconnected from the system to reduce wear and tear on mechanical parts. To prevent.

[0009]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows an embodiment in which an external type auxiliary storage device 5 is connected to the outside of the computer 1. As shown in FIG. Note that in the same figure, 2 is the CPU in the computer 1;
Similarly, 4 is an interface to the main memory, and 4 is an interface to the auxiliary storage device 5. Reference numeral 9 denotes an internal bus, which connects the CPU 2, main memory 3, and interface 4. Further, 11 is a power source for the computer 1 and the auxiliary storage device 5, and 6 (6A) is a switch provided between the power source 11 and the auxiliary storage device 5 and controlled to open and close by the computer 1. In the system shown in FIG. 1, when the power supply 11 is turned on and the computer 1 is reset, the switch 6A
is turned on, and the power is turned on to the auxiliary storage device 5. The program in the auxiliary storage device 5 is loaded into the main memory 3, and when this loading is completed, the switch 6A is turned off by a command from the CPU 2, and the auxiliary storage device 5 stops operating. In this case, it is assumed that the computer 1 operates only with the programs loaded into the main memory 3. Furthermore, if it becomes necessary to save data to the auxiliary storage device 5 when powering off the computer 1, etc., this data can be saved by turning on the switch 6A according to a command from the CPU 2.

FIG. 2 shows an embodiment in which an auxiliary storage device 5 is incorporated into a computer system 10 as one structure. In the figure, 7 is a bus disconnection circuit that opens and closes the connection between the internal bus 9 and the interface 4;
B) is a switch provided between the power supply 11 and the interface 4. 8 is a digital output circuit connected to the internal bus 9, which is connected to the bus disconnection circuit 7 by a command from the CPU 2.
and controls opening/closing of switch 6 (6A, 6B).

In the system of FIG. 2, the power supply 11
and computer system 10 or CPU
When 2 is reset, switches 6A and 6B are in the ON state,
The bus disconnection circuit 7 is in a connected state, and the interface 4
, the power is turned on to the auxiliary storage device 5, and the interface 4
is electrically connected to the internal bus 9. The program in the auxiliary storage device 5 is loaded into the main memory 3, and after this loading is completed, the digital output circuit 8 is controlled by instructions from the CPU 2, first, the bus disconnection circuit 7 is disconnected, and the interface 4 is connected to the internal bus 9. electrically disconnected. Next, the switches 6A and 6B are turned off, and the interface 4 and auxiliary storage device 5 stop operating. In this case, it is assumed that the computer system 10 operates only with the programs loaded into the main memory 3. Similarly to FIG. 1, when it becomes necessary to save data, etc. to the auxiliary storage device 5, such as when powering off the computer system 10, the digital output circuit 8 is controlled by a command from the CPU 2, and the switch is first activated. This data saving is possible by turning on 6A and 6B and then connecting the bus disconnection circuit 7.

0012

According to the present invention, in a computer system (1, 10, etc.) which has an auxiliary storage device 5 such as a hard disk and operates only by programs loaded from the auxiliary storage device 5 to the main memory 3, When the power supply 11 of the computer system is turned on or when this system is reset, the power supply 11 of the auxiliary storage device 5 is turned on, and after loading the program from the auxiliary storage device 5 to the main storage memory 3, the CPU 2 of this system is turned on. Since it is equipped with a digital output circuit 8, a switch 6A, etc. as an opening/closing means for turning off the power supply 11 of this auxiliary storage device 5 according to a command,

00
13] By turning off the power of the auxiliary storage device and stopping its operation, the wear and tear of mechanical parts is prevented and the lifespan is extended, thereby reducing the failure rate during operation. Furthermore, when the auxiliary storage device is built into one structure as shown in Figure 2, current consumption can be reduced by turning off the power to the interface and the auxiliary storage device.
As a result, the temperature rise inside the structure is lower and the reliability of the computer system is also higher. Furthermore, the auxiliary storage device in the stopped state is removed from the computer system, and other software development computer systems are used to
By replacing the newly developed or modified program with the program in the auxiliary storage device and connecting it to the original computer system again, it is possible to replace the program in the computer system with minimal operational downtime. .

[Brief explanation of drawings]

[Fig. 1] System configuration diagram as an embodiment of the present invention

[Fig. 2] System configuration diagram as another embodiment of the present invention

[Explanation of symbols]

1 Computer 2 CPU 3 Main memory memory (main memory) 4 Interface 5 Auxiliary storage device 6 (6A, 6B) Switch 7 Bus isolation circuit 8 Digital output circuit 9 Internal bus 10 Computer system 11 Power supply

Claims (4)

[Claims] Claim 1: Having an auxiliary storage device such as a hard disk,
In a computer system that operates only by a program loaded from the auxiliary storage device to the main memory, when the power of the computer system is turned on or when this system is reset, the power of the auxiliary storage device is turned on, and the auxiliary storage device A pseudo-diskless system characterized by comprising an opening/closing means for turning off the power to the auxiliary storage device according to a command from a computer of the system after loading a program from the computer to the main storage memory. 2. The pseudo diskless system according to claim 1, wherein the opening/closing means is capable of turning on the power of the auxiliary storage device according to a command from the computer as necessary. 3. The pseudo diskless system according to claim 1 or 2, wherein the opening/closing means turns the power of the interface of the computer system to the auxiliary storage device on and off. A pseudo-diskless system characterized by being equipped with means for turning on and off according to the respective conditions. 4. The pseudo diskless system according to claim 3, wherein the opening/closing means closes the connection between the interface and the internal bus of the computer system when the power to the auxiliary storage device and the interface is turned on. , a pseudo diskless system comprising: bus opening/closing means that opens prior to turning off the power to the auxiliary storage device and the interface.