JPH1186523A - Type magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cooling efficiency of an assembled-type magnetic disk device and to prevent the degradation in cooling efficiency at the time of maintenance. SOLUTION: A group of magnetic disk units 2 are placed on the front surface part of a cylindrical device easing 1 and plural power source units 3, 4 are placed on the rear surface part thereof. The cooling air is taken in from the magnetic disk units 2 by rotation of fans 5 for cooling disposed on the outer side panel of the respective power source units to cool the magnetic disk units, etc. Finally, the cooling air is discharged from the rear surface of the device after cooling of the power source units. The arrangement and construction of the respective components in the device are also so determined as not to disturb the air flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk drive, and more particularly to a collective magnetic disk drive.

[0002]

2. Description of the Related Art In recent years, with the development of electronic circuit technology and various material technologies, miniaturization and high-density mounting of magnetic disk devices have been rapidly progressing. With the miniaturization of the devices, there has been an increasing number of examples of collective magnetic disk devices in which a plurality of devices are mounted in a 19-inch rack, which is a global standard, instead of being installed on the floor by itself. I have. In many cases, a collective magnetic disk device is configured by arranging a plurality of magnetic disk units horizontally and vertically stacking them, and combining a power supply unit, a control unit, and the like.

[0003]

In the collective magnetic device, it is necessary to increase the cooling efficiency.
Japanese Patent Application Publication No. 99-99399 discloses a technique for vertically cooling air with good cooling efficiency by holding a magnetic disk assembly and a circuit part in the same case and opening the upper and lower parts of the case.

[0004] However, 19-inch racks having front and rear openings have been widely used. Few of them have openings at the top and bottom, and the desk side of a general office is not a computer room. In some cases, it is not desirable to provide the openings on the upper surface and the lower surface, for example.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the cooling efficiency by a front-to-back air cooling system in which a plurality of magnetic disk units each containing a magnetic disk assembly and its circuit unit are housed in the same case in a standard rack. It is an object of the present invention to provide a collective magnetic disk drive capable of performing the following.

[0006]

According to the present invention, there is provided a collective magnetic disk drive comprising: a cylindrical housing surrounding upper and lower sides and both sides of a magnetic disk unit and a power supply unit which are arranged to face each other; A cooling fan means for exhausting air inside the housing to the outside of the housing, and a cooling air intake means provided on the magnetic disk side.

[0007] The cooling fan means may be at least one or more cooling fans provided on the outer panel of each power supply unit.

[0008] The cooling air intake means may be a plurality of ventilation ports provided on the outer front panel of each of the disk units magnetically.

There is a gap through which air flows between the case of the magnetic disk unit and the magnetic disk assembly in the case.

Each of the power supply units has a ventilation hole for sucking air around the power supply unit.

The magnetic disk unit, the power supply unit, and the control board of the collective magnetic disk drive can be inserted into and pulled out of the housing in parallel.

Various relay boards for accommodating the wiring between the device control board and each magnetic disk unit and each power supply unit are arranged in parallel with the housing or provided with necessary ventilation holes.

The housing has a structure that can be mounted on a standard rack.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1A and 1B are schematic views showing an example of installation of a collective magnetic disk drive according to the present invention, wherein FIG. 1A is mounted on a 19-inch rack which is a global standard, and FIG. Is cut and mounted on a rack that has been modified for use on the deskside.

FIG. 2 is a perspective view of the collective magnetic disk drive according to the present invention, FIG. 3 is a partially cutaway side view of the collective magnetic disk drive of FIG. 2, and FIG. 4A shows a case of the magnetic disk unit. FIG. 4B is a front view of a front panel of the magnetic disk unit, FIG. 5 is a perspective view of the power supply units 3 and 4, and FIG. 6 is an air flow diagram of the collective magnetic disk device of FIG. .

The collective magnetic disk drive shown in FIG.
20 magnetic disk units 2 arranged in layers and 4 rows
And three power supply units 4, one battery unit (emergency power supply unit) 3, and a control board 6, and a cylindrical housing 1 surrounding the upper surface, the lower surface, and both side surfaces together with various relay boards for connecting them. Housed within.
(The power supply unit and the battery unit may be collectively referred to as a power supply unit.) As shown in FIG.
The housing 1 is attached to a 19-inch rack or a desk-side rack obtained by cutting and modifying a 19-inch rack.

As shown in FIG. 3, a horizontal partition plate 11 is provided on the right side (front side) of the housing 1 to partition the upper and lower five stages, and four magnetic partitions are placed on each partition plate 11 in parallel. The disk unit 2 and a disk unit relay board 8 connecting these magnetic disk units to the control board 6 via the controller relay board 12 are mounted, and the magnetic disk unit 2 is guided by the partition plate 11 and is like a drawer of a chest. It has a structure that can be inserted into and removed from the housing 1.

A power supply box 13 is provided on the left side (rear side) in the housing 1 and power supply units 3 and 4 with a cooling fan 5 are set therein so as to be drawn out. The cooling fan 5 discharges the air in the housing 1 in the lateral direction (horizontal direction) on the back side.

An apparatus control board 6 and a controller relay board 12 are placed horizontally above the power supply box 3 and the uppermost magnetic disk unit 2, and the apparatus control board 6 can be pulled out from the back side of the housing 1 in parallel with the housing. Yes, and
It is electrically connected to the external connection connector 7 provided on the rear panel 14.

FIG. 4A is a perspective view of the magnetic disk unit 2 (the case is partially cut away), and FIG. 4B is a front view of the front panel of the magnetic disk unit 2. The magnetic disk unit 2 includes a magnetic disk assembly 21 and a circuit board 22 for operating the magnetic disk assembly.
Are housed in the case 23. The front panel 26 is provided with a ventilation port 10 for sucking external air, and a vertical gap 25 of 3 mm is provided between the case 23 and the upper and lower surfaces of the magnetic disk assembly 21.
The rear panel 27 is also provided with a ventilation port. The air passing through the magnetic disk unit 2 is sucked into the power supply units 3 and 4 through the ventilation holes provided in the power supply relay board 15 and the power supply box 13.

As shown in FIG. 5, in addition to the power supply circuit board 41, two cooling fans 5 are attached to the outer end of the power supply unit 4, and a large number of ventilation holes 10 are provided in the housing of the power supply unit 4. The air in the housing 1 is sucked in from these ventilation holes, and is discharged from the back surface of the apparatus by the cooling fan 5. Similarly, the battery unit 3 is provided with a cooling fan 5 and a ventilation port 10.

FIG. 6 shows the flow of cooling air (arrow 100) in the housing 1. The cooling air is supplied to a plurality of ventilation holes 1 provided in the front panel 26 of each magnetic disk unit 2.
0, the gap in the magnetic disk unit,
After passing through the ventilation holes provided in the power supply relay board 15 and the power supply box 13, the power supply unit 34 proceeds to the power supply unit 34, and is discharged from the cooling fans 5 attached to the outer panels of the power supply units 3 and 4 to the outside of the power supply units 3 and 4. You. In order to cool the control board 6 above the power supply box 13, air intake gaps are provided between the rear panel 14 and the power supply box and between the rear panel 14 and the upper surface of the housing 1. Is sucked into the power supply units 3 and 4 placed below the control board 6.

As described above, the air sucked into the housing 1 from the magnetic disk unit 2 placed mainly on the front side of the apparatus by the rotation of the cooling fan 5 passes through the magnetic disk unit 2 and the control board 6 which generate a relatively small amount of heat. After cooling, the process proceeds to the power supply unit, and all the air contributes to cooling of the power supply units 3 and 4 having the largest heat value, and is discharged from the cooling fan 5 to the back surface of the apparatus. In addition, the magnetic disk unit 2, which needs to be taken out of the housing 1 for maintenance,
Since the power supply units 3 and 4 and the control board 6 are all drawn out in a direction parallel to the housing 1, fluctuations in the flow of air in the housing 1 during maintenance of those units are relatively small.

[0024]

According to the present invention, a group of magnetic disk units and a plurality of power supply units are arranged on both sides of a cylindrical housing, and a cooling fan is arranged at a rear portion of the power supply unit to generate an air flow from the opposite direction. This has the effect of greatly improving the cooling efficiency of the power supply unit requiring the most cooling.

Also, by adopting a structure in which components requiring unit replacement for maintenance are drawn out in a direction parallel to the housing, fluctuations in air flow due to drawing out of the components are suppressed, and the permissible maintenance time in the operating state is extended. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing an installation example of a collective magnetic disk device of the present invention.

FIG. 2 is a perspective view of the collective magnetic disk drive of the present invention.

FIG. 3 is a partially cutaway side view of the collective magnetic disk drive of FIG. 2;

FIG. 4 is a perspective view of a magnetic disk unit with a case partly broken away and a front view of a front panel of the magnetic disk device.

FIG. 5 is a perspective view of the power supply units 3 and 4.

FIG. 6 is an air flow diagram of the collective magnetic disk device of FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 housing 2 magnetic disk unit 3 battery unit 4 power supply unit 5 cooling unit 6 device control board 7 external connector 8 disk unit relay board 10 ventilation port 11 partition plate 12 controller relay board 13 power supply box 14 rear panel 15 power relay board 21 magnetism Disk assembly 22 Operating circuit unit 23 Case 25 Vertical gap 26 Magnetic disk unit front panel 41 Power supply circuit board 100 Air flow

Claims (8)

[Claims] 1. A collective magnetic disk drive in which a magnetic disk assembly and a plurality of magnetic disk units accommodating a circuit board for operating the magnetic disk assembly in a case are mounted together with at least one or more power supply units. A cylindrical housing surrounding the upper and lower sides and both sides of the magnetic disk unit and the power supply unit; and a cooling fan provided at an end of the housing on the power supply unit side to exhaust air inside the housing to the outside of the housing. And a cooling air intake means provided on the magnetic disk side. 2. The collective magnetic disk device according to claim 1, wherein said cooling fan means is at least one or more cooling fans provided on an outer panel of each of said power supply units. 3. The collective magnetic disk drive according to claim 1, wherein said cooling air intake means is a plurality of ventilation holes provided on each outer front panel of said magnetic disk unit. 4. The collective magnetic disk drive according to claim 1, wherein a gap through which air flows is provided between a case of the magnetic disk unit and a magnetic disk assembly in the case. 5. The collective magnetic disk drive according to claim 1, wherein each of the power supply units has a ventilation hole for sucking air around the power supply unit. 6. The magnetic disk unit according to claim 1, wherein the magnetic disk unit, the power supply unit, and the control board of the collective magnetic disk device can be inserted and pulled out in parallel with the housing, respectively. Collective magnetic disk drive. 7. A relay board for accommodating wiring between the control board and each of the magnetic disk units and each of the power supply units, or is arranged in parallel with a housing or provided with necessary ventilation holes. 7. The collective magnetic disk drive according to claim 1. 8. The collective magnetic disk drive according to claim 1, wherein said housing has a structure attachable to a standard rack.