JPH11305944A - Magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm the state of linking of a fiber channel interface. SOLUTION: A lamp 50 is provided for displaying the state of linking of a fiber channel interface 10, the state of linking of the fiber channel interface 10 is detected by a fiber channel control part 20 and under the control of a data processing part 60, the state of linking of the fiber channel interface detected by the fiber channel control part 20 is displayed on the lamp 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a magnetic disk drive, and more particularly, to a magnetic disk drive using a fiber channel interface.

[0002]

2. Description of the Related Art A fiber channel interface is an interface capable of performing high-speed data transfer using an optical fiber cable or a copper cable, and enables hot-plugging of a device or a cable.

In the magnetic disk drive, the above-mentioned fiber channel interface is connected in a loop (with a link), and data is transmitted and received.

However, in the magnetic disk drive using the fiber channel interface, since the fiber channel interface is connected in a loop as described above, if the link is disturbed (link down) due to the insertion or removal of a certain cable or the like (link down). The disruption of the link affects all devices connected to the loop.

[0005] Therefore, when a link down is detected,
The process of returning the loop (link up) is being performed.

[0006]

However, in a magnetic disk drive using the above-described fiber channel interface, there is no means for indicating the link state of the fiber channel interface. When a down occurs, there is a problem that it is not possible to determine whether a link up has been performed thereafter.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems of the conventional technology, and has as its object to provide a magnetic disk drive capable of displaying a link state of a fiber channel interface. And

[0008]

In order to achieve the above object, the present invention provides a magnetic disk drive using a fiber channel interface, which controls the fiber channel interface and detects a link state of the fiber channel interface. A fiber channel control unit for outputting a detection result, a magnetic disk to which data input through the fiber channel interface is written, a magnetic disk control unit for controlling writing and reading of data to and from the magnetic disk, Display means for indicating a link state of a fiber channel interface, processing data input through the fiber channel interface and data read from the magnetic disk, and controlling the fiber channel control And having a data processing means for controlling said display means based on the state of the link detected by the stage.

Further, the display means is a lamp.

The data processing means controls the lamp to be turned on when the link state of the fiber channel interface detected by the fiber channel control means is link down, and the fiber channel control means If the link status of the fiber channel interface detected in is link up,
The lamp is controlled to be turned off.

Further, the display means is a display for displaying a link state of the fiber channel interface by a message.

(Operation) In the present invention constructed as described above, the state of the link of the fiber channel interface is detected by the fiber channel control means, and detected by the fiber channel control means under the control of the data processing means. Since the status of the link of the Fiber Channel interface is displayed on the display means, the status of the link of the Fiber Channel interface can be confirmed without connecting a special device such as an analyzer.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a magnetic disk drive according to the present invention.

In this embodiment, as shown in FIG. 1, while controlling the fiber channel interface 10, the state of the link of the fiber channel interface 10 is detected.
A fiber channel control unit 20 that outputs a detection result, a magnetic disk 30 to which data input via the fiber channel interface 10 is written, a magnetic disk control unit 40 that controls writing and reading of data to and from the magnetic disk 30, The lamp 50, which is a display unit for indicating the link status of the fiber channel interface 10, and the data input via the fiber channel interface 10 and the data read from the magnetic disk 30 are processed, and the fiber channel control unit 20 Lamp 5 based on the detected link status.
0 and a data processing unit 60 for controlling the data processing.

The fiber channel control unit 20 is realized by a fiber channel interface control LSI or the like. When any event occurs in the fiber channel interface 10, the content is reported to the data processing unit 30 by an interrupt signal or the like. . Here, the events that occur in the fiber channel interface 10 include a link down indicating that the link state has been disrupted, a link up indicating that the link state has become normal, and the reception of a fiber channel command. And the like.

The lamp 60 includes a light emitting diode (L
ED) or the like. In this embodiment, when the link state is disturbed (link down)
Means that the lamp 60 is turned on, and when the link state is normal and a fiber channel command can be executed (link up), the lamp 60 is turned off.

FIG. 2 is a block diagram showing a configuration of the data processing unit 30 shown in FIG.

As shown in FIG. 2, the data processing unit 30 in this embodiment includes a microprocessor 31 and a main storage unit 32.
And an I / O input / output unit 33, and controls the entire apparatus. Actually, the operation is realized by controlling these by firmware.

The operation of displaying the link state in the magnetic disk drive configured as described above will be described below.

FIG. 3 is a flowchart for explaining the link state display operation in the magnetic disk device shown in FIG.

In the fiber channel control unit 20,
The link state of the fiber channel interface 10 has been detected, and the detection result has been notified to the data processing unit 60.

First, the data processing unit 60 determines whether the link state of the fiber channel interface 10 detected by the fiber channel control unit 20 is link down (step S1), and determines that the link is down. If so, the lamp 50 is controlled to be turned on (step S2), and then a link down process is performed (step S3).

If it is determined in step S1 that the link status of the fiber channel interface 10 detected by the fiber channel control unit 20 is not a link down, the fiber channel detected by the fiber channel control unit 20 is not down. It is determined whether the link state of the channel interface 10 is link up (step S4).

If it is determined in step S4 that the link state of the fiber channel interface 10 detected by the fiber channel control unit 20 is link up, link up processing is performed (step S4).
5) The lamp 50 is controlled to be turned off (step S6).

On the other hand, if it is determined in step S4 that the link state of the fiber channel interface 10 detected by the fiber channel control unit 20 is not link up, the control of the lamp 50 is not performed, and Is executed only (step S7).

(Other Embodiment) FIG. 4 is a block diagram showing another embodiment of the magnetic disk drive of the present invention.

As shown in FIG. 4, the present embodiment differs from the embodiment shown in FIG. 1 only in that the display means for indicating the link status of the fiber channel interface 10 is replaced by a display 70 instead of the lamp 50. It is.

On the display 70, a link status of the fiber channel interface 10 is displayed by a message. For example, when the link status of the fiber channel interface 10 is link down,
"Link down state" is displayed, and when the link state of the fiber channel interface 10 is the link up state, "link up state" is displayed.

[0030]

As described above, in the present invention,
Display means for displaying the link status of the fiber channel interface is provided, the fiber channel control means detects the link status of the fiber channel interface, and the data processing means controls the fiber channel detected by the fiber channel control means. Because the link status of the interface is configured to be displayed on the display, there is no need to connect a special device such as an analyzer.
The state of the link of the fiber channel interface can be easily confirmed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a magnetic disk drive according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a data processing unit illustrated in FIG. 1;

FIG. 3 is a flowchart for explaining a link state display operation in the magnetic disk device shown in FIG. 1;

FIG. 4 is a block diagram showing another embodiment of the magnetic disk drive of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fiber channel interface 20 Fiber channel control unit 30 Magnetic disk 40 Magnetic disk control unit 50 Lamp 60 Data processing unit 61 Microprocessor 62 Main storage unit 63 I / O input / output unit 70 Display

Claims (4)

[Claims] 1. A magnetic disk drive using a fiber channel interface, comprising: a fiber channel control means for controlling the fiber channel interface, detecting a link state of the fiber channel interface, and outputting a detection result; A magnetic disk to which data input via a channel interface is written; a magnetic disk control means for controlling writing and reading of data to and from the magnetic disk; a display means for indicating a link state of the fiber channel interface; and the fiber Data input via the channel interface and data read from the magnetic disk are processed, and the table is displayed based on the link state detected by the fiber channel control means. Magnetic disk apparatus characterized by comprising a data processing means for controlling the means. 2. The magnetic disk drive according to claim 1, wherein said display means is a lamp. 3. The magnetic disk drive according to claim 2, wherein the data processing unit turns on the lamp when a link state of the fiber channel interface detected by the fiber channel control unit is link down. A magnetic disk drive, wherein the lamp is turned off when the link state of the fiber channel interface detected by the fiber channel control means is link up. 4. The magnetic disk drive according to claim 1, wherein said display means is a display for displaying a link state of a fiber channel interface by a message.