JPH0285942A - data processing system - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data processing system having a three-tiered storage configuration of a main storage device, an expanded storage device, and an external storage device. The present invention relates to a data processing system having a storage configuration that allows a mixture of different storage devices.

[Conventional technology]

Conventionally, in a data processing system, an instruction processing device is
It is configured to access the main memory of the system element for necessary data processing and perform the required data processing. Recent large-scale data processing systems are increasingly equipped with expansion storage devices that expand the capacity of the main storage device in order to cope with the increase in the amount of data to be processed.

An example of a data processing system equipped with this type of expanded storage device is described in, for example, Japanese Patent Laid-Open No. 58-9276. In the data processing system described herein, a page transfer bus and data transfer means, which are independent data buses between an expanded storage device (page storage device) and a main storage device, are provided. A system configuration is realized in which data is transferred between the device and the main storage device. Here, the page transfer bus is an independent data bus path, and data transfer for storage in the expanded storage device is performed on this path, and data is transferred without passing through a channel or instruction processing unit. will be held.

Page data transfers performed on such independent data buses are: (1) controlled asynchronously by the channel independently of the instruction stream of the instruction processing unit, or (2) controlled by the instruction processing unit independently of the instruction stream of the channel. It can be controlled synchronously and independently from the operation.

However, in either case, the configuration is such that only the address of the extended storage device is specified in an access request for accessing data stored in the extended storage device.

[Problem to be solved by the invention]

By the way, the concept of a system configuration using such an extended storage device is that the extended storage is a part of the main memory, and the prerequisite is that all extended storage have the same attributes. However, when using an expanded storage device in a data processing system, the relationship between main memory and expanded storage is such that non-volatile memory for backup is stored in the expanded storage device for the purpose of improving system reliability. This will cause some inconvenience when preparing for.

In other words, in a data processing system that uses expanded storage, no consideration is given to the possibility of a system configuration in which the expanded storage is a device with different attributes from the main storage. There is a problem in that memory and non-volatile memory cannot be mixed together.

In addition, in order to have non-volatile memory for backup in the extended storage device for the purpose of improving system reliability, for example, a storage configuration in which all of the extended storage device is non-volatile memory may be used. However, in this case, there are problems in that the power supply device for backing up the nonvolatile memory becomes too large and there is not enough backup time.

The present invention has been made to solve the above problems.

An object of the present invention is to provide a data processing system having a storage configuration that allows storage devices with different attributes to coexist in an extended storage device.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[Solve the problem. means for

In order to achieve the above object, in the present invention, in a data processing system having a three-tiered storage configuration of a main storage device, an expanded storage device, and an external storage device, an expanded storage device identification number is included in the configuration control information of the expanded storage device. will be established.

This configuration control information of the extended storage device includes attribute information indicating attributes of the extended storage device in correspondence with the extended storage device identification number.

Further, a plurality of extended storage devices are provided, and an extended storage device identification number is provided in the configuration control information of each extended storage device. Furthermore, a plurality of extended storage device identification numbers are provided in the configuration control information of the extended storage device, and a plurality of extended storage devices are virtually added to the storage configuration.

In addition, multiple expansion storage device identification numbers are set in the configuration control information of the expansion storage device, attribute information indicating the attributes of the expansion storage device is set corresponding to the expansion storage device identification numbers, and extensions with different attributes are set. It is characterized by the ability to mix storage devices.

[Effect]

According to the above means, a main storage device and an extended storage device.

In a data processing system that provides a three-layer storage configuration of an external storage device, an extended storage device identification number is provided in the configuration control information of the expanded storage device.

A three-tier storage configuration of a data processing system is configured by providing, in addition to a main storage device and an external storage device, an expansion storage device that can operate at an operating speed intermediate between these surface storage devices. Here, a plurality of expanded storage devices are prepared, and an expanded storage device identification number is assigned to identify each expanded storage device. This extended storage device identification number is a unique number and is set in the configuration control information of the extended storage device. The expanded storage device identification number is used to identify the expanded storage device and also to identify the attributes of the expanded storage device. Therefore, attribute information indicating the attributes of the extended storage device corresponding to the extended storage device identification number is included in the configuration control information of the extended storage device. In this way, by defining attributes corresponding to extended storage device identification numbers and identifying each extended storage device, it is possible to mix volatile memory and non-volatile memory as extended storage devices in a data processing system. Become.

Further, the configuration control circuit identifies the attribute according to the expansion storage device identification number based on the configuration control information of the expansion storage device, thereby making it possible to access expansion storage devices having different attributes.

That is, each expanded storage device has configuration control information, and this configuration control information is composed of an expanded storage device identification number, and a lower limit address and an upper limit address that can access the expanded storage device. When accessing an extended storage device from a channel device or an instruction processing device, an access request is sent using information of an extended storage device identification number and an extended storage address. In response to an access request, this information is compared with the configuration control information possessed by each extended storage device, and the extended storage device to be accessed is determined. Note that even if an access is made with an extended storage device identification number that is not in the configuration control information of each extended storage device, an exception will be detected in the access request processing and exception processing will be performed, so that no malfunction will occur.

In this way, it is possible to have a plurality of expanded storage devices, and a large capacity expanded storage device can be incorporated into the storage structure of a data processing system.

Also, as part of the expanded storage device, it is possible to incorporate a non-volatile memory expanded storage device into the storage configuration of the data processing system for backup purposes. therefore,
A data processing system that can increase the capacity of an expanded storage device and incorporate non-volatile memory into the expanded storage device for backup, increasing the amount of data to be processed and improving data integrity and reliability. It becomes possible to construct

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described using the drawings.

FIG. 1 is a block diagram showing the main configuration of a data processing system according to an embodiment of the present invention.

In FIG. 1, 1 is an instruction processing device, 2 is a main storage device,
3 is a storage control device, 4 is a channel device, 5 is an expansion storage device, and 6 is a turntable device including an external storage device.

Furthermore, 7, 8, 9, 10, and 11 are buses that connect the devices, respectively.

A main storage device 2 is connected to the instruction processing device 1 via a storage control device 3, and a channel device 4 is connected to the instruction processing device 1 via a storage control device 3. Furthermore, an extended storage device 5 is connected via the storage control device 3. In this way, the instruction processing device 1. Main storage device 2° channel device 4. Expanded storage devices 5 are interconnected to form a data processing system.

The channel device 4 receives and receives data from the external storage device of the input/output device 6 via the bus 8.

The data is supplied to the storage control device 3 via the bus 7 and further to the main storage device 2 via the bus 11. In this way, the bus 7 connects the channel device 4 and the storage control device 3, and the bus 8 connects the channel device 4 and the external storage device 6, which is an input/output device. Further, a bus 9 connects the instruction processing device 1 and the storage control device 3, and a bus 10 connects the extended storage device 5 and the storage control device 3.

Transfer between the expanded storage device 5 and the main storage device 2 is carried out via the storage control device 3 via a bus 10 that connects the expanded storage device 5 and the storage control device 3 and between the storage device 2 and the storage control device 8. This is done using the bus 11 that connects the.

The extended storage device 5 includes an extended storage control section 5A containing configuration control information, and extended storage sections 5B and 5C that are distinguished by information in a configuration control information register 20.21 of the extended storage section. In the extended storage section 5C.

A backup power supply device 12 is added and is separated from the power supply of the main device. Therefore, even if the main unit is powered down, the data in the extended storage unit 5C is not destroyed and remains a non-volatile memory. In addition, the extended storage unit 5
B is a normal volatile memory that does not particularly have a backup power supply.

In this example of the extended storage device 5, the extended storage unit 5B.

An example in which an extended storage device identification number is provided to distinguish between 5G volatile memory and nonvolatile memory will be described, but the use of this extended storage device identification number is not limited to this. For example, the same volatile memory extended storage device may be used as an identification number for different purposes, or the same nonvolatile memory extended storage device may be used as an identification number for different purposes. It's okay.

In the block diagram of this embodiment, the extended storage device 5 is
Although an example is shown in which the configuration is made up of two expansion storage units (5B, 5C), it may be configured with two or more expansion storage units.

FIG. 2 shows the control unit SA of the extended storage device S in FIG.
FIG. 2 is a block diagram showing the configuration of main parts of the configuration control logic block of FIG. In FIG. 2, the configuration control information register 20 (
The information 21) indicates the configuration control information configured as described above, and includes, for example, the extended storage device identification number register 20a (or 21a) of each extended storage section, the lower limit address register 20b (or 21a) of each extended storage section, and the lower limit address register 20b ( or 21b)
, upper limit address register 20C (or 2
1C).

An access request for accessing the expanded storage device 5 via the storage control device 3 is made through the bus 10.
In addition to the data bus, the bus 10 is provided with control lines for an extended storage device identification number path 10a and an extended storage address bus 10b. The extended storage device identification number may be supplied on another control line without using the bus 10a.

The extended storage device identification number and extended storage address of the access request sent from the control lines (10a, 10b) are set in register 31 and register 32, respectively. The extended storage identification number entered in the register 31 is
A comparator 33 compares the data with the data in the extended storage identification number register 20a of the extended storage section 5B.

If the comparison results in a match, a match signal 33a is output.

Further, the extended storage address entered in the register 32 is compared with the data of the extended storage lower limit address register 20b and the data of the extended storage upper limit address register 20c of the extended storage unit 5B, and the lower limit address and the upper limit address are It is checked whether it is included or not. If the address falls within the lower limit address and upper limit address, a valid signal 34a is sent out from the comparator 34. AND circuit 4
0, if the AND condition of the match signal 33a and the valid signal 34a is satisfied and one condition is satisfied, the extended storage section 5B can be accessed, so the access enable signal 40a to the extended storage section 5B is sent.

Similarly, the configuration control information register 2 of the extended storage unit 5C
1, the extended storage device identification number entered in the register 31 is stored in the extended storage identification number register 21 of the extended storage unit 5C.
It is compared with the data of a by a comparator 35, and if they match, a match signal 35a is output. The extended storage address entered in the register 32 is compared with the data of the extended storage lower limit address register 21b and the data of the extended storage upper limit address register 21c of the extended storage section 5C by the comparator 36,
It is checked whether the address is within the lower limit address and upper limit address. If the address falls within the lower limit address and upper limit address, a valid signal 36a is sent out from the comparator 36. An AND condition of the match signal 35a and the valid signal 36a is taken by the AND circuit 41, and if the condition is satisfied, the extended storage section 5C can be accessed, so the access enable signal 41a indicating 29 is sent out, and the extended storage section 5C is sent to.

Further, the accessible signal 40a of the extended storage section 5B and the accessible signal 41a of the extended storage section 5C are transmitted to the N○R circuit 50.
When the negative OR condition is taken and neither the access enable signal 40a nor the access enable signal 41a is established, an access exception is detected and the access exception signal 5 is
Outputs 0a and reports it to the request issuer. This performs access exception handling.

As explained above, in this embodiment, a storage configuration is adopted in which extended storage sections with different attributes (having two extended storage device identification numbers) are mixedly provided in one extended storage device, and a backup power supply is provided. Although an example has been shown in which the extended storage device has an extended storage section with the device 12 attached, the present invention is not limited to this.
The storage structure may include more than one extended storage device identification number. However, the attributes mentioned here correspond to the extended storage device identification number of each extended storage section.
For example, in addition to attribute information that distinguishes between volatile memory, nonvolatile memory, etc., attribute information that distinguishes between high-speed memory with a fast response time, low-speed memory with a slow response time, etc. may be associated.

FIG. 3 is an example of an attribute table that defines attribute information of an extended storage device in association with an extended storage device identification number. For example, the attribute of the extended storage device with identification number 1 indicates that it is volatile memory.

The attribute of the extended storage device with identification number 2 indicates that it is non-volatile memory, the attribute of the extended storage device with identification number 3 indicates that it is high-speed memory, and the attribute of the extended storage device with identification number 4 indicates that it is low-speed memory. It shows that there is.

The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to have a storage configuration that allows, for example, volatile memory and nonvolatile memory to coexist in one extended storage device. For this reason, the degree of freedom in the storage configuration of the expanded storage device is increased, and compared to the constraints on the backup power supply and backup time when all nonvolatile memory is used, the negative part is replaced with nonvolatile memory. This storage configuration makes it easier to downsize the backup power supply and secure backup time. In this way, the degree of freedom in the storage configuration of the expanded storage device increases, making it possible to build a data processing system with a storage configuration that accommodates an increase in the amount of data to be processed and improvements in data integrity and reliability. It becomes easier.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of main parts of a data processing system according to an embodiment of the present invention, and FIG. FIG. 3 is a diagram showing an example of an attribute table defining opposite sex information of an extended storage device in correspondence with an extended storage device identification number. In the figure, Component...Instruction processing device, 2... Main storage device, 3
...Main memory control unit, 4...Channel device, 5...
Extended storage device, 6... input/output device including external storage device.

Claims (1)

[Scope of Claims] 1. In a data processing system having a three-tiered storage configuration of a main storage device, an expanded storage device, and an external storage device, an expanded storage device identification number is provided in the configuration control information of the expanded storage device. A data processing system featuring: 2. The data processing system according to claim 1, wherein the configuration control information of the expanded storage device includes attribute information indicating attributes of the expanded storage device in correspondence with the expanded storage device identification number. 3. In a data processing system that has a three-tiered storage configuration of main storage, extended storage, and external storage, a plurality of extended storage devices are provided and the extended storage device identification number is included in the configuration control information of the extended storage device. A data processing system characterized by: 4. Claim 2, characterized in that a plurality of extended storage device identification numbers are provided in the configuration control information of the extended storage device, and a plurality of extended storage devices are virtually added to the storage configuration.
Or the data processing system according to claim 3. 5. Setting a plurality of extended storage device identification numbers in the configuration control information of the extended storage device, setting attribute information indicating attributes of the extended storage device in correspondence with the extended storage device identification numbers,
4. The data processing system according to claim 2, wherein expanded storage devices having different attributes can be mixed.