JP2002150746A - Magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve power consumption, vibration resistance, shock resistance, and device reliability as compared with a magnetic disk device of a conventional type 3.5 in. form factor or 2.5 in. form factor. SOLUTION: Two or more 3.5 in. size magnetic disk devices are packaged in a 3.5 in. form factor and a magnetic disk device interface conversion part for providing a reference interface of the 2.5 in. size magnetic disk device with interchangeability is packaged in the 3.5 in. form factor. Or two magnetic disk devices are packaged in the 3.5 in. or 2.5 in. form factor and the same data are written in both the magnetic disk devices. Or two independent spaces divided by a diaphragm are formed so that two 2.5 in. size magnetic disk devices can be packaged in the 3.5 in. form factor to remove the influence of dust in respective spaces.

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 mounting method, and more particularly, to a magnetic disk drive having a plurality of magnetic disk drives mounted within a 3.5-inch form factor or a 2.5-inch form factor. About.

[0002]

2. Description of the Related Art A conventional magnetic disk drive has at least one magnetic recording medium in a 3.5-inch or 2.5-inch form factor, a rotating mechanism for supporting and rotating the magnetic recording medium, The magnetic disk device is provided with a magnetic head provided to face a magnetic recording medium for recording / reproducing data, and a positioning mechanism for supporting the magnetic head and positioning the magnetic head at an arbitrary position.

In general, the interface of a magnetic disk drive is S in the case of a 3.5-inch magnetic disk drive.
CSI1 (Small Computer System)
mInterface 1), SCSI2, SCSI
3. FC-AL (Fibrechannel arbi)
A 2.5-inch-size magnetic disk drive uses an ATA (AT Attachme) interface.
nt) interface or the like is employed.

[0004]

In general, a 3.5-inch magnetic disk device is superior to a 2.5-inch magnetic disk device in terms of device capacity, data transfer speed, and the like. In some cases, the power was large and the vibration proof performance and the shock proof performance were inferior.

As a method for suppressing power consumption, Japanese Patent Laid-Open No.
No. 302482 discloses at least one magnetic recording medium and a rotation mechanism for supporting and rotating the magnetic recording medium in the same space of the same housing, and data recording / reproducing provided opposite to the magnetic recording medium. A magnetic disk drive in which a plurality of sets of a magnetic head and a positioning mechanism that supports the magnetic head and positions the magnetic head at an arbitrary position is shown. However, in the case of this technique, since a plurality of sets are arranged in the same space, if a failure such as sliding occurs between one magnetic recording medium and the magnetic head, fragments of the magnetic recording medium or the magnetic head or the medium may be damaged. It is considered that there is a very high possibility that the sliding powder will slide on another magnetic recording medium in the same space, causing the obstacle to spread. In this case, there is a problem that data recorded in the magnetic disk device is completely lost.

In order to solve the above-mentioned problem, the magnetic disk drive of 3.5 inch size or 2.5 inch size has a structure in which the power consumption is suppressed, and a magnetic recording medium between a pair of magnetic recording media and a magnetic head is provided. It is an object of the present invention to provide a technique for preventing complete destruction of data even when a failure such as sliding occurs.

In addition, instead of a 3.5-inch magnetic disk drive of the contact start / stop system (CSS system), a 2.5-inch magnetic disk drive of the load / unload system has a 3.5-inch form factor. Another object of the present invention is to provide a magnetic disk drive in which the impact resistance performance is improved by mounting a plurality of the magnetic disk drives so as to be able to fit in the apparatus.

However, as described above, the interface between the 3.5-inch magnetic disk device and the 2.5-inch magnetic disk device is generally different from each other. When mounting a plurality of 2.5-inch magnetic disk drives in a 5-inch form factor, SCSI1, S2
CSI2, SCSI3, FC-AL interface,
When mounting a plurality of 1.8-inch size magnetic disk drives in a 2.5-inch form factor (1.8-inch size interface is unspecified), A
It is necessary to use the TA interface as the interface of the magnetic disk drive.

Here, the term "3.5 inch form factor" refers to the external size (length, width, and height dimensions) of a magnetic disk drive using a 3.5 inch diameter magnetic disk, and the magnetic disk drive housing. A standardized magnetic disk drive that defines the positions of a large number of mounting holes
The 3.5-inch magnetic disk drive is described in 3.
It refers to a magnetic disk drive using a 5-inch diameter magnetic disk, and its outer size is not specified.

An object of the present invention is to provide a 3.5-inch form factor or a 2.5-inch form factor with improved power consumption performance, vibration proof performance, shock proof performance, and device reliability. To provide a magnetic disk device.

[0011]

In order to solve the above problems, the present invention mainly employs the following configuration.

2.5 in a 3.5 inch form factor
Mount two or more inch-size magnetic disk units,
A magnetic disk drive having a magnetic disk drive interface converter within the 3.5-inch form factor for providing compatibility with a standard interface between a 3.5-inch magnetic disk drive and a 2.5-inch magnetic disk drive.

Alternatively, two or more 1.8-inch magnetic disk drives are mounted in a 2.5-inch form factor, and a standard interface between the 2.5-inch magnetic disk drive and the 1.8-inch magnetic disk drive is provided. A magnetic disk drive comprising a magnetic disk drive interface converter for providing compatibility within the 3.5-inch form factor.

A partition is provided so that a 2.5-inch (or 1.8-inch) magnetic disk drive can be mounted in a 3.5-inch form factor (or a 2.5-inch firm factor). Two independent spaces are provided, at least one magnetic recording medium, a rotation mechanism for supporting and rotating the magnetic recording medium, and recording / reproducing of data provided to face the magnetic recording medium in each of the independent spaces. And a positioning mechanism for supporting the magnetic head and positioning the magnetic head at an arbitrary position.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A magnetic disk drive according to an embodiment of the present invention will be described below in detail with reference to the drawings.

[Embodiment 1] FIG. 1 is a view showing Embodiment 1 of the present invention, and is a plan view (center in FIG. 1), a front view (lower in FIG. 1), and a right side view (right in FIG. 1). ). In this embodiment, 3.5 inches of 1 inch height (about 25.4 mm height) is used.
Inch form factor (5.75 inches long (approximately 14
6 mm), 2.5 inches in short 4 inches (about 102 mm))
This shows a case where two inch-size magnetic disk devices 1a and 1b are mounted. Incidentally, the height dimension, the longitudinal dimension and the lateral dimension are values standardized by a form factor, and there are other height dimensions as well. Two 2.5 inch size magnetic disk devices 1a and 1b are arranged in parallel,
It is fixed with a sheet metal 12 through a hole 10. The protruding portion 12a of the sheet metal is provided between the two 2.5-inch magnetic disk devices 1a and 1b so that the magnetic disk devices 1a and 1b do not directly contact each other.

This does not necessarily mean that a sheet metal is formed, but may have a structure in which a rubber-like substance is sandwiched between devices, or a structure in which a rubber-like substance is stuck to the formed sheet metal portion 12a. . In order to comply with the 3.5-inch form factor, it is necessary to provide a plurality of device mounting holes 9 (the holes 9 are mounting holes standardized by the form factor). Therefore, the component 12 provided with the mounting hole 9
b and the sheet metal 12 were configured such that the mounting holes 8 were fastened with screws or the like. Also, the component 1 provided with the sheet metal 12 and the mounting hole 9
2b may have an integrated structure.

Referring again to FIG. 1, according to FIG. 1, the sheet metal 12 forming the entire bottom surface in the plan view has left and right side rising portions as shown in the plan view (the sheet metal rising portion 12 is shown in the right side view). ), The longitudinal side surface of the magnetic disk drive 1b is fixed via the hole 10 at the side surface rising portion. The sheet metal 12 on the entire bottom surface also has a rising portion 12 on the front side surface (a rising portion 12 on the left side in the front view of FIG. 1), and the hole 8 and the screw provided in the rising portion 12 are used as intervening parts. 12b is provided (12b shown in the front view of FIG. 1). The part 12b is a thick columnar body, and has a standard hole 9 of a form factor on both the front side and the flat side, and the magnetic disk device is attached to the housing through the standard hole.

Further, the sheet metal 12 on the entire bottom surface is provided with a convex forming portion 12a (also shown as a rising portion in the front view) which is indicated by a dotted line in the vertical direction at the center of the plan view. 12a, the magnetic disk device 1a
And 1b do not come into contact with each other. That is, 2.5
The inch magnetic disk devices 1a and 1b are arranged so that their longitudinal sides of the rectangular shape face the convex forming portion 12a.

The interface of the device according to the present embodiment in which two 2.5-inch magnetic disk devices are mounted must be compatible with the standard interface of the 3.5-inch magnetic disk device. So 2
In order to convert the ATA interfaces of the two magnetic disk devices 1a, 1b, the ATA-SCSI1, ATA
-SCSI2, ATA-SCSI3, ATA-FC-A
The connector 5 mounted on the interface conversion board 6 having an L conversion function and the like has an FPC (Flexible P
print circuit) 3 and 4. Further, the interface conversion board 6 is structured to be fixed via a component 11 connected to a sheet metal 12.

Further, on the interface conversion board 6, a connector 7 for connecting to a higher-level controller is mounted, and the magnetic disk device contained in the 3.5-inch form factor shown in the present embodiment has a higher level. From SCSI1, SCSI2, SCSI3, or F
It is possible to operate as a 3.5-inch size magnetic disk device having a C-AL interface.

FIG. 2 is a block diagram when two 2.5-inch magnetic disk drives are mounted in the 3.5-inch form factor described in the present embodiment. 2.
Each of the 5-inch-sized magnetic disk devices 13 and 14 includes at least one magnetic recording medium 25, a rotation mechanism 22 that supports and rotates the magnetic recording medium 25, and data provided to face the magnetic recording medium. And a positioning mechanism 23 that supports the magnetic head and positions it at an arbitrary position.

In the above description, two 2.5-inch magnetic disk drives are accommodated in a 3.5-inch form factor.
Although a case where two magnetic disk devices of 2.5 inch form factor are mounted is described as an example of application of the present embodiment, it is obvious that two magnetic disk devices of 2.5 inch form factor are mounted.

In FIG. 2, reference numeral 16 denotes a hard disk controller IC, 17 a data buffer memory, 18
Is a read / write channel IC, 19 is a read / write preamplifier, 20a and 20b are microprocessors,
Reference numeral 21 denotes a motor driver IC. The hard disk controller 16 has an ATA interface decoder. Instructions from the upper level are SCSI1, SC
After being sent via the interface connector 27 in the format of SI2, SCSI3, FC-AL, or the like, it is converted into an ATA interface by the control command conversion logic 26 and mounted in two 2.5-inch magnetic disk devices. Sent to the hard disk controller 16 via the interface connector 15. That is,
Two 2.5-inch magnetic disk drives mounted in a 3.5-inch form factor can operate with the standard ATA interface, so that existing 2.5-inch magnetic disk drives can be used. It is effective because it can be used as it is.

The operation control can be performed from a higher rank as a 3.5-inch size magnetic disk device having improved power consumption performance, vibration proof performance and shock proof performance. 3.5
The power supply voltage of the inch-size magnetic disk drive is +12
V ± 5% and + 5V ± 5%, but the power supply voltage of the 2.5-inch magnetic disk drive can be operated only at + 5V ± 5%, so that only the power supply of + 5V ± 5% is used for 2.5 inches. It is necessary to work on the interface conversion board 6 of FIG. 1 so as to provide a magnetic disk device of a size.

In the present embodiment, 3.5 of 1 inch height is used.
Although an example is shown in which two 2.5-inch magnetic disk drives are mounted in an inch form factor, the number is not limited to two and is called a full height in the form factor standard. .6 inch height (about 4
Three or more 2.5-inch size magnetic disk drives may be mounted as long as the number of units falls within each form factor including the 3.5-inch form factor (1.3 mm). In other words, two 2.5-inch magnetic disk devices can be mounted on a horizontal plane, and two stages can be mounted in the height direction.

Similar effects can be expected by mounting a plurality of 1.8-inch size magnetic disk drives in a 2.5-inch form factor in the same manner as described above.

[Embodiment 2] FIG. 3 is a view showing Embodiment 2 of the present invention. Unlike the method disclosed in the known JP-A-7-302482, according to the present embodiment,
Each 2.5-inch size magnetic disk device that fits in a 3.5-inch form factor has an independent space (as shown in FIG. 3, a partition partitioning the 3.5-inch form factor into left and right, for example, is provided at the center thereof. To form two independent spaces), at least one in each space
A 2.5 inch size magnetic recording medium 25, a rotating mechanism 22 for supporting and rotating the magnetic recording medium, a magnetic head 24 provided to face the magnetic recording medium for recording / reproducing data, A positioning mechanism 23 for supporting the magnetic head and positioning the magnetic head at an arbitrary position is mounted. (The technique disclosed in the above-mentioned publication discloses that each 2.5-inch size magnetic disk drive is arranged in the same space without a partition. Has been).

By doing so, even when sliding occurs between one set of magnetic recording medium and the magnetic head, the other magnetic recording medium, the rotating mechanism, the magnetic head, and the magnetic head positioning mechanism can be used. On the other hand, it was possible to adopt a structure in which dust generated by the sliding, gas generated in one of the magnetic disk devices, and the like were not affected.

FIG. 3 shows an external view. In this embodiment, as in the first embodiment, in order to comply with the 3.5-inch form factor, it is necessary to provide a plurality of device mounting holes at the positions shown in FIG. Therefore, a part provided with a mounting hole is mounted on the schematic diagram of FIG.
The structure of FIG. 8 may be changed to provide a mounting hole. The control system is preferably as shown in the block diagram of FIG.
5. The rotation mechanism 22, the magnetic head 24, and the magnetic head positioning mechanism 23 may be integrated into one control system.

The interfaces between the magnetic disk device shown in the present embodiment and the host are SCSI1, SCSI2, and SCS.
By using I3, FC-AL, or the like, the operation can be controlled as a 3.5-inch size magnetic disk device with improved power consumption performance, vibration proof performance, and shock proof performance.

Similar effects can be expected by mounting a 1.8-inch size magnetic recording medium, a rotating mechanism, a magnetic head, a magnetic head positioning mechanism, and the like in a 2.5-inch foam, as in the above description.

[Embodiment 3] Embodiments 1 and 2
In the magnetic disk drive having the configuration shown in FIG. 1, the microprocessors 20a and 20 of the two magnetic disk drives are used.
By connecting b, a function of writing the same data to two magnetic disk devices or respective magnetic recording media mounted in two spaces and always creating a mirror disk is added. By doing so, even if one of the data is destroyed, the reliability of the data can be greatly improved by reproducing the data from the other magnetic disk device or the magnetic recording medium mounted in another space Becomes Of course, by creating a mirror disk, the storage capacity of the entire magnetic disk device is halved. However, according to the present invention, a usage that emphasizes data reliability or a usage that emphasizes device storage capacity is used. It was also characterized by having selectivity.

As described above, the embodiments of the present invention include those having the following structures, functions, and actions. That is, in the embodiment of the present invention, a configuration is adopted in which a plurality of 2.5-inch size magnetic disk devices are mounted so as to be within the 3.5-inch form factor.

Further, two independent spaces separated by a partition wall are provided in one housing so as to fit in a 3.5-inch form factor, and at least one magnetic recording medium and the magnetic recording medium are provided in each space. A rotating mechanism for supporting and rotating the magnetic recording medium, a magnetic head for recording / reproducing data provided opposite to the magnetic recording medium, and a positioning mechanism for supporting the magnetic head and positioning the magnetic head at an arbitrary position. I decided to do it. By doing so, obstacles such as sliding between the magnetic recording medium in one of the combinations of two or more sets of the magnetic recording medium, the rotating mechanism, the magnetic head, and the magnetic head positioning mechanism, and the magnetic head. Data can be prevented from being completely destroyed even in the case where the error occurs.

Compared with the conventional 3.5-inch magnetic disk drive, the 2.5-inch magnetic disk drive generally has lower power consumption performance, vibration resistance and shock resistance. In general, the power consumption of a 2.5-inch magnetic disk drive of 9.5 mm height is smaller than that of a 3.5-inch magnetic disk drive of 25.4 mm height.
It is 5-6% at idle. The vibration proof stress is 2 to 2.5 times, and the shock proof strength is 4 to 5 times when not operating.

According to the present invention, although the transfer speed is not as high as that of a 3.5-inch magnetic disk drive, a 2.5-inch magnetic disk drive with low power consumption falls within a 3.5-inch form factor. By mounting multiple devices as described above, for example, when two devices are mounted, 3.5
The power consumption of the device is 10 to 12% at idle when compared with one magnetic disk device of an inch size, and 20 to 24% when four devices are mounted, so that a magnetic disk device with excellent power consumption performance can be provided.

In general, a load / unload type magnetic disk device is different from a CSS type magnetic disk device in that the magnetic recording medium and the magnetic head are not close to each other during non-operation or when the magnetic head is unloaded. Has excellent impact resistance. Therefore, instead of a 3.5-inch magnetic disk drive of the CSS system, a plurality of 2.5-inch load / unload magnetic disk drives must be mounted to fit within the 3.5-inch form factor. As a result, it is possible to provide a magnetic disk device having improved impact resistance performance.

As described above, in the case of a 3.5-inch size magnetic disk device, the interface of the magnetic disk device is generally SCSI-1, SCSI-2, or SCSI-.
3. An FC-AL interface or the like is adopted, while an ATA interface or the like is adopted as an interface of a 2.5-inch size magnetic disk device.
Therefore, it is necessary to make the interface of the device compatible. According to the present invention, when a plurality of 2.5-inch size magnetic disk drives are mounted in a 3.5-inch form factor, an ATA is used to match the interface of the 3.5-inch size magnetic disk drive.
-SCSI1, ATA-SCSI2, ATA-SCSI
3. It can be realized by providing an ATA-FC-AL interface conversion function.

Similarly, when mounting a 1.8-inch magnetic disk drive in a 2.5-inch form factor, the interface of the 1.8-inch magnetic disk drive can be replaced with a 2.5-inch magnetic disk drive. This can be realized by matching the interface of the device.

[0041]

According to the present invention, 2. excellent low power consumption performance, vibration proof performance, impact proof performance, and device reliability.
It is possible to provide a magnetic disk drive having a 5-inch form factor and a 2.5-inch form factor.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a specific arrangement of a magnetic disk drive according to Embodiments 1 and 3 of the present invention.

FIG. 2 is a control block diagram of a magnetic disk drive according to Embodiments 1 to 3 of the present invention.

FIG. 3 is a diagram illustrating an appearance of a magnetic disk drive according to Embodiments 2 and 3 of the present invention.

[Explanation of symbols]

1a, 1b Magnetic disk drive 2a, 2b Interface connector 3, 4 FPC (Flexible Print Ci)
5 connector 6 Interface conversion board 7 Interface connector 8 Mounting hole 9 Magnetic disk drive mounting hole 10 Screw-down mounting hole 11 Interface conversion board mounting part 12 Sheet metal 12a Sheet metal convex forming part 12b Parts with mounting holes formed 13, 14 Magnetic Disk device 15 Interface connector 16 Hard disk controller 17 Data buffer memory 18 Read / write channel 19 Read / write preamplifier 20a, 20b Microprocessor 21 Motor driver IC 22 Rotation mechanism 23 Magnetic head positioning mechanism 24 Magnetic head 25 Magnetic recording medium 26 Control command conversion logic 27 Interface connector 28 Magnetic disk drive housing

Claims (5)

[Claims] 1. Within a 3.5 inch form factor.
A magnetic disk device interface conversion unit for mounting two or more 5-inch size magnetic disk devices, and a magnetic disk device interface conversion unit for making the standard interface between the 3.5-inch size magnetic disk device and the 2.5-inch size magnetic disk device compatible. A magnetic disk drive equipped in a .5 inch form factor. 2. Within a 2.5 inch form factor.
The magnetic disk device interface converter for mounting two or more 8-inch size magnetic disk devices and having a standard interface between the 2.5-inch magnetic disk device and the 1.8-inch magnetic disk device compatible with the standard interface described in the above item 3. A magnetic disk drive equipped in a .5 inch form factor. 3. A mirror disk in which two magnetic disk drives are mounted in a 3.5-inch form factor or a 2.5-inch form factor, and the same data is written to each magnetic disk drive to create a mirror disk. Magnetic disk drive. 4. Within a 3.5 inch form factor.
Two independent spaces separated by partition walls are provided so that a 5-inch size magnetic disk device can be mounted, and at least one magnetic recording medium and a rotation mechanism for supporting and rotating the magnetic recording medium are provided in each of the independent spaces. A magnetic head provided with a magnetic head provided to face the magnetic recording medium for recording / reproducing data, a positioning mechanism for supporting the magnetic head and positioning the magnetic head at an arbitrary position, and the like. . 5. Within a 2.5 inch form factor.
Two independent spaces separated by partition walls are provided so that an 8-inch magnetic disk device can be mounted, and at least one magnetic recording medium and a rotation mechanism for supporting and rotating the magnetic recording medium are provided in each of the independent spaces. A magnetic head provided with a magnetic head provided to face the magnetic recording medium for recording / reproducing data, a positioning mechanism for supporting the magnetic head and positioning the magnetic head at an arbitrary position, and the like. .