JPH10161816A - Computer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set an additional hard disk as an effective disk in a non-stop computer system without stopping the system operation. SOLUTION: This system includes a hard disk interface B and a system main body 8 which accesses a hard disk drive B connected to a relevant interface B via the interface B. When a hard disk additional event occurs, the main body 8 inhibits the access to the interface B. When the end of addition of a hard disk is to the interface B is confirmed, the main body 8 acquires the information necessary for the access to the additional disk 5 from this disk and then permits the access to the interface B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a computer system, and more particularly, to a computer system to which a hard disk drive can be added.

[0002]

2. Description of the Related Art Generally, a conventional computer system is connected to a hard disk drive as an external storage.
Equipped with CSI interface etc. For example, SC
With an SI interface, a plurality of hard disk drives can be connected in series to one interface, and a large-capacity external storage system can be easily realized.

Some models have two or more hard disk connection interfaces.

In a system in which a plurality of hard disk drives are connected to an interface, first, the power of the hard disk drive is turned on, and then the main body of the computer is started. Then, in the startup process of the computer, an operable hard disk connected to the interface is recognized by the OS (operating system). After the computer is started, data recording / reproduction is allowed only for the hard disk drive recognized by the OS.

[0005]

However, in the above conventional example, even if a new hard disk is added to the interface after the computer is already booted and running, the existence of the hard disk is recognized by the OS. However, they could not be set as valid hard disks while the computer itself was running. For this reason, when adding a hard disk to a non-stop system, etc., it is necessary to stop the system once, perform additional work, and then boot the computer and make the OS recognize the newly installed disk. There was a disadvantage that the function as a system was hindered.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a computer system which can solve the disadvantages of the prior art and, in particular, can set an added hard disk as an effective disk on the system without stopping the non-stop system. With that purpose.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a hard disk interface and a system main body for accessing a hard disk drive connected to the interface via the hard disk interface. . When a hard disk addition event occurs, the system body prohibits access to the interface, and after confirming the completion of the addition of the hard disk to the interface, acquires information necessary for accessing the additional disk from the additional disk After that, access to the interface is permitted.

According to the present invention, when a hard disk addition event occurs in the OS, the OS prohibits access to an interface for adding a hard disk and waits until a hard disk is added. When the addition of the hard disk is confirmed, access to the interface is permitted after acquiring information necessary for accessing the disk from the additional disk. Thereafter, when an access request to the additional disk occurs, recording or reproduction access to the additional disk is executed based on information necessary for access obtained from the additional disk.

According to the second aspect of the present invention, a first hard disk interface to which files necessary for system operation are connected, a second hard disk interface to which files irrelevant to system operation are connected, and via these interfaces A system main body for accessing a hard disk drive connected to each of the interfaces. When the hard disk addition event occurs, the system body prohibits access to the second interface, and confirms that the addition of the hard disk to the second interface has been completed. Is acquired from the additional disk, and then access to the second interface is permitted.

According to the present invention, when a hard disk addition event occurs, the OS prohibits access to the second interface while keeping access to the first interface effective. When the addition of the disk to the second interface is confirmed, the information necessary for accessing the disk from the additional disk is acquired.
Allow access to the interface. Thereafter, when an access request to the additional disk occurs, recording or reproduction access to the additional disk is executed based on information necessary for access obtained from the additional disk.

[0011] The invention according to claim 3 employs a configuration in which the system main body is provided with an input key for generating a hard disk addition event.

In the present invention, when the operator operates a predetermined input key, a hard disk addition event occurs in the OS.

[0013] Accordingly, the above-mentioned object is achieved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG.

The computer system shown in FIG. 1 has a first hard disk interface A to which files necessary for system operation are connected, a second hard disk interface B to which files unrelated to system operation are connected, and these interfaces. A system main body 8 is provided for accessing the hard disk drives 6, 7 connected to the respective interfaces A, B via A, B. When the hard disk addition event occurs, the system main body 8 prohibits access to the second interface B, and confirms that the addition of the hard disk 5 to the second interface B has been completed. A function is provided for permitting access to the second interface B after acquiring information necessary for access from the additional disk 5.

More specifically, in the present embodiment, the system main body 8 includes elements of a conventional general computer system such as a CPU, a keyboard, a display, and the like. An OS and various application programs (hereinafter abbreviated as AP) operate on the CPU of the system main body 8.

Two hard disks 1 and 2 in which a system (OS) is installed are connected to the first interface A. On the other hand, in the second interface B,
Two hard disks 3 and 4 irrelevant to the system operation are connected, and another hard disk 5
Trying to add.

The keyboard of the computer body 8 is provided with an input key (additional key 8a) for generating a hard disk addition event. Reference numeral 8b indicates an additional confirmation key of the hard disk.

Next, the overall operation of this embodiment will be described with reference to FIG.

The operator operates the additional key 8a to
When a hard disk addition event occurs in S (step S1), the OS prohibits access to the interface B for adding the hard disk 5 until permission is granted (step S2). The operator adds the hard disk 5 and operates the confirmation key 8b (Step S)
3). As a result, when the completion of the addition of the hard disk is confirmed by the OS, the OS acquires information necessary for accessing the additional disk 5 from the additional disk 5 via the interface B (step S4), and Permit access to B.

Here, the information required to access the additional disk 5 may be the same as the hard disk identification information (plobe information) obtained by the OS in a conventional general computer system at system startup.

During this time, access to the interface A to which files necessary for the system operation are connected is permitted, so that the hard disk drive 5 can be added without stopping the non-stop system.
In the OS, since information for accessing the additional disk 5 has been acquired, the additional disk 5 can be set as a valid hard disk drive on the system without stopping the non-stop system.

When an access request to the additional disk is issued, the OS executes recording or reproduction access to the additional disk based on information necessary for access obtained from the additional disk.

[0024]

Next, an example based on the above embodiment will be described with reference to FIG.
4 through FIG.

In FIG. 3, reference numeral 11 denotes a personal computer including conventional general system elements such as a CPU, a keyboard, and a display. On the CPU, O
S and application programs operate. On the keyboard of the personal computer 11, the OS is provided with an additional key 11a for generating a disk addition event and a confirmation key 11b for confirming completion of disk addition.

The personal computer 11 has an HD
IDE interface 12 to which D1 is connected, and HDD
2 and a SCSI interface board 13 to which the device 2 is connected. Here, the HDD means a hard disk drive. The HDD 1 stores files necessary for operating the OS. On the other hand, the HDD 2 stores files irrelevant to the operation of the OS (for example, application files). And now SCSI
The HDD 3 is being added to the interface 13.

Next, the operation when the HDD 3 is added will be described with reference to FIG.

When the operator operates the addition key 11a to generate a disk addition event in the OS (step S11), the OS prohibits access of the application to the SCSI interface and disables access to the HDD 2 (step S11). Step S12). here,
The operator adds the HDD 3 after the HDD 2 and operates the confirmation key 11b (step S13). OS
When the completion of the addition of the HDD 3 is confirmed, the status of the HDD 3 is taken into the SCSI controller (step S14), and the OS receives the connection information of the HDD 3 (step S15), and sets the HDD 3 to be accessible.

Then, the OS activates the HDD 3 and enables the application or the like to access the HDD 2 and the HDD 3 via the SCSI interface 13 (step S16).

Here, when the HDD is connected, the circuit may be damaged due to an inrush current or the like. Therefore, it is desirable to provide a countermeasure circuit such as an overcurrent prevention circuit in the connector. As a result, it is possible to prevent inrush current from occurring at the time of connection. Also, when access to the interface for adding a disk is prohibited, when an application requests data writing to the interface, the OS temporarily writes the write data as a temporary file to a disk drive of an interface capable of writing as a temporary file. After allowing access to the interface where the disk has been added, the temporary file may be moved to the target hard disk.
Also, the completion of addition of the hard disk drive may be confirmed by the OS based on a signal obtained on the interface side by activating the added drive, instead of inputting the confirmation key.

[0031]

As described above, according to the present invention, the system body prohibits access to the interface for adding a disk in response to the occurrence of a disk addition event,
When a hard disk is added, information required for accessing the additional disk is obtained from the additional disk, and then access to the interface is permitted.
A new disk can be added while the system body is operating effectively, and the new disk can be set as a valid file system on the system without restarting the system. For this reason, by maintaining the memory contents during application execution even after adding a disk, the application can be continued immediately after the addition of the disk, and the hard disk drive can be added without relatively hindering the operation of the non-stop system. can do.

In particular, when prohibiting access only to an interface to which a file irrelevant to the system operation is connected out of the two interfaces, access to an interface to which a file necessary for the system operation is connected during the disk addition operation is also prohibited. Since it is permitted, the hard disk drive can be added without stopping the non-stop system, and since the OS has acquired information for accessing the additional disk, the non-stop system is stopped. It is possible to provide an unprecedented excellent computer system in which an additional disk can be set as an effective hard disk drive on the system without using the additional disk.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment shown in FIG.

FIG. 3 is a block diagram showing one embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the embodiment shown in FIG.

[Explanation of symbols]

1-5 Hard disk 6 Hard disk storing files necessary for system operation 7 Hard disk for data unrelated to system operation 8 System body A First hard disk interface B Second hard disk interface

Claims (3)

[Claims] 1. A computer system comprising: a hard disk interface; and a system main body that accesses a hard disk drive connected to the interface via the interface. The system main body is configured to connect to the interface when a hard disk addition event occurs. Prohibit access,
A computer system, wherein upon confirming completion of addition of a hard disk to the interface, information necessary for accessing the additional disk is acquired from the additional disk, and then access to the interface is permitted. 2. A first hard disk interface to which a file necessary for system operation is connected, a second hard disk interface to which a file unrelated to system operation is connected, and a connection to each of the interfaces via these interfaces. A system body that accesses the hard disk drive, wherein the system body prohibits access to the second interface when a hard disk addition event occurs, and adds a hard disk to the second interface. Upon confirming completion, the computer system acquires information necessary for access to the additional disk from the additional disk, and then permits access to the second interface. 3. The computer system according to claim 1, wherein said system main body includes an input key for generating a hard disk addition event.