JP6864221B2 - Memory control device and memory control method - Google Patents

Description

The present invention relates to a storage control device and a storage control method, and more particularly to a storage control device and a storage control method suitable for accommodating and using a single or a plurality of hard disk drives as a storage device.

Various control devices execute a control program called firmware. The version of the firmware is updated to improve its functions. Some control devices are expected to have the latest version.
Patent Document 1 and Patent Document 2 disclose a technique for updating a predetermined control device when the firmware is not the latest.

JP-A-2009-80550 Japanese Unexamined Patent Publication No. 2002-278906

Since one firmware is usually held in the control device, it is recommended to keep the latest firmware.
On the other hand, the storage connected to the network and shared is provided with non-volatile internal memory and one or more hard disk drives. The firmware of this storage is stored in the internal memory and the hard disk drive as a countermeasure against the failure of the hard disk drive, and in the past, these firmwares were made to be the same version. When recovering the hard disk, use the firmware read from the internal memory. Therefore, a mismatch forces you to use a different version of the firmware.

However, if you want to use a hard disk with a different version of firmware, you need to initialize the hard disk drive to get the same version. Therefore, when using the hard disk drive that has been used until then, it is necessary to back up all the stored contents in advance and restore the stored contents again after initialization.
The present invention provides a memory control device and a memory control method that eliminate these operations and improve convenience.

The present invention comprises an internal memory for storing a first control program, a connection for connecting a single or a plurality of storage devices for storing a second control program, and the storage connected to the internal memory and the connection. A storage control device including a control unit that controls the memory of the device, wherein the control unit reads the version information of the first control program as the first version information at a predetermined timing, and the second control program. The configuration is such that the version information of the control program is read as the second version information, and the match between the read first version information and the second version information is determined.

In the above configuration, the storage control device is connected to an internal memory for storing the first control program, a connection unit for connecting one or more storage devices for storing the second control program, and the internal memory and the connection unit. It is provided with a control unit that is connected to control the storage of the storage device, and when one or a plurality of storage devices are connected, the storage device is controlled according to a predetermined control program.

Further, the storage control device reads the version information of the first control program as the first version information and reads the version information of the second control program as the second version information at a predetermined timing. It is determined that the first version information and the second version information match.
It is possible to perform different control depending on whether they match or do not match.

As another aspect of the present invention, the control unit may display the read first version information and the second version information, wait for selection, and perform control corresponding to the selection.
In the configuration, the control unit displays the read first version information and the second version information, and waits for selection. When the user selects which version is desired, the control unit performs control corresponding to the selection.

As another aspect of the present invention, the control unit may be configured to perform control to unify version information in response to selection.
In the above configuration, the control unit controls to unify the version information in response to the selection.

As another aspect of the present invention, the control unit holds the storage contents of the storage device when a predetermined condition is satisfied when performing control to unify the first version information in response to selection. May be.
In the above configuration, even if the selection is unified to the first version information, the stored contents of the storage device are retained when a predetermined condition is satisfied.
As an example, if the first control program of the first version information is higher-compatible with the second control program of the second version information, even if it is an option to unify the versions of the control programs. , The stored contents of the storage device can be retained.

As another aspect of the present invention, when the control unit performs control to unify the second version information of one storage device in response to selection, when a predetermined condition is satisfied, the other storage device is stored. It may be configured to hold the stored contents of the device.
In the above configuration, when the control unit performs control to unify the second version information of one storage device in response to selection, when a predetermined condition is satisfied, the storage content of the other storage device is satisfied. To hold.

Select to unify the control program of one storage device to the control program version of another storage device, even if the control programs of multiple storage devices have different versions, for example, if one is higher-compatible with the other. Even so, the stored contents of the storage device can be retained.

As another aspect of the present invention, the control unit may be configured to format the storage device in response to selection.
In the configuration, the storage device is formatted according to the selection. Format the storage device if the user chooses, regardless of whether the version information is unified.

As another aspect of the present invention, the control unit displays the system ID when a different system ID is read in the storage device, waits for the selection of the system ID, and performs control corresponding to the selection. May be.
In the above configuration, when controlling a plurality of storage devices, in addition to the problem of matching and mismatching of control program versions, system IDs are individually set if the storage devices have the same version but are used in different storage control devices. Will be done. Therefore, the user is prompted to select the system ID, and the stored contents of the storage device of the selected system ID are retained as an example.

According to the present invention, it is assumed that control programs having different version information may exist inside the control device, and the corresponding control is selected depending on whether or not the version information matches. Therefore, for example, use is used. You will be able to continue using the hard disk drive you were using without formatting it.

A block diagram shows a schematic configuration of a network storage to which the storage control device according to the embodiment of the present invention is applied. It is a flowchart corresponding to the control program executed by the control unit. It is a figure which shows an example of the web page provided by the web server. It is a figure which shows the decision table which shows the correspondence with the selection of the process set in advance for each combination such as the state of a disk. It is a flowchart corresponding to the method of supplying the latest firmware and rewriting the firmware of the internal memory and the HDD.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a network storage to which a storage control device according to an embodiment of the present invention is applied by a block diagram.
The network storage 10 includes a control unit 11 and performs various controls. The network storage 10 can use a RAID configuration as a preventive measure against a failure of a storage device described later. The control unit 11 is connected to a RAM (DDR3) 12 as a storage area used when executing a control program, and a NAND flash 13 that stores a predetermined control program in a non-volatile manner. Hard disk drives 15 (HDD1 to HDD8) are connected to the control unit 11 via HDD connectors 14a and 14b. The hard disk drive 15 is an example of a removable storage device, and includes an SSD composed of only a semiconductor in addition to a normal HDD having a mechanical configuration. Further, it includes, and is not limited to, a detachable storage device widely.
Here, the NAND flash 13 corresponds to an internal memory for storing the first control program, the hard disk drive 15 corresponds to one or more storage devices for storing the second control program, and the HDD connectors 14a and 14b store. Corresponds to the connection part that connects the devices.

A USB interface 16 is connected to the control unit 11, and an external USB device can be connected via the USB connectors 17a and 17b. As an external USB device, for example, a USB memory, a USB storage device provided with a hard disk drive, or the like can be connected. Further, a network interface 18 is connected to the control unit 11 so that information can be recorded and read from the network storage 10 via the network, and various settings can be made. ..
From the above, the control unit 11 corresponds to a control unit that is connected to the internal memory and the connection unit to control the storage of the storage device.

The hard disk drive 15 is accommodated in a predetermined HDD accommodating space 21 in the enclosure accommodating the network storage 10, and can be freely attached and detached. Other configurations are also housed in this enclosure.

In the network storage 10, the control program is stored in both the NAND flash 13 and the hard disk drive 15. The control program executed by the control unit 11 usually uses the one stored in the hard disk drive 15. This is because the hard disk drive 15 has abundant storage areas that can be used, so that a control program having a large capacity and can be executed is stored. On the other hand, the NAND flash 13 stores a control program having a relatively small capacity and a compressed apparent capacity in consideration of the balance between the capacity of the storage area and the cost. When the hard disk drive 15 fails, it is uncertain whether a normal control program can be read from the failed hard disk drive 15, so a preliminary control program is stored in the NAND flash 13.
From the above, in the network storage 10, a plurality of control programs (firmwares) of the same type are stored in different locations in the device. This point is significantly different from other electronic devices that control according to a control program.

Several use cases are considered as the usage of this enclosure.
1. 1. Install an unused hard disk drive and start new use.
2. Install a used hard disk drive.
2-1. Use a set of hard disk drives that have already realized a RAID configuration.
2-2. Use multiple sets of hard disk drives that have already realized the RAID configuration.
In the case of "1. Install an unused hard disk drive and start new use", it is the same as the case of the existing network storage. Below, mainly 2. The pattern of mounting a used hard disk drive will be described in detail.

FIG. 2 is a flowchart corresponding to the control program executed by the control unit, and the operation of the network storage 10 will be described below with reference to the flowchart of the control unit program.

When starting to use the network storage 10, the user attaches a predetermined hard disk drive 15 and turns on the power. Then, the network storage 10 starts starting as follows.

First, in step S100, the control unit 11 confirms the state of the disk (hereinafter, the hard disk drive 15 is simply referred to as a disk). The state of this disc includes the following:
1) Is there one or more recognizable discs? 2) Is the firmware version information of the discs the version supported by this network storage 10? 3) Multiple system IDs (RAID IDs) are attached to the connected discs. Does it exist? 4) There are four items: whether the firmware version information of the disk and the firmware version information of the NAND flash 13 match. In addition to these, check the model name and total capacity of each disk.

Here, the firmware version information of the disk corresponds to the version information of the second control program in one or more storage devices, and the firmware version information of the NAND flash 13 is the first control stored in the internal memory. Corresponds to the version information of the program. The process of determining these matches is "at a predetermined timing, the version information of the first control program is read as the first version information, and the version information of the second control program is read as the second version information. It corresponds to the process of "determining the match between the read first version information and the second version information", and the control unit 11 or the like executes such a process. Further, the process is a process performed at different timings in time, and it can be said that the present invention is also established as an invention of the method.

Further, in the disk status confirmation in step S100, as a part of the confirmation whether the HDD is damaged or not, it is also confirmed whether or not a predetermined file exists on the disk.
In step S102, the condition of the activation mode is determined based on a predetermined rule.
First, in step S104, if the predetermined rule is met, normal booting is allowed, but if it does not match, the drive setup mode, which is not normal booting, is started. This content will be described later.

Next, with respect to the above four items, if the following conditions are satisfied, normal startup is permitted, but if any one of the following conditions is not satisfied, the vehicle is started in a drive setup mode that is not normal startup.
1) There is one or more recognizable discs (yes)
2) The version information of the firmware of the disk is the version supported by this network storage 10 (Yes).
3) Multiple system IDs (RAID IDs) do not exist on the connected disk (single)
4) The firmware version information of the disk and the firmware version information of the NAND flash 13 match (same).

Once the disk configuration is realized, these four items are satisfied and the above-mentioned predetermined file is recorded. Therefore, all the conditions for normal start are satisfied, and after the determination in step S104, the normal start is performed in step S106, and the normal operation is performed in step S108.

On the other hand, if the above-mentioned predetermined file does not exist on the disk, it is presumed that the disk configuration has never been performed, and if any one of the above four items is not satisfied, something is wrong. It is presumed that a measure is required, and in order to take this measure, the drive setup mode is started in step S110. When booting in the drive setup mode, in step S112, the user is notified that the booting mode is different from the normal booting mode. Although not shown in FIG. 1, an LCD (liquid crystal display) and a speaker are provided for notification, and notification is performed by these.

The network storage 10 can be set and the like via the network, and the user refers to the web page provided by the network storage 10 by the browser of another PC connected to the network and performs a predetermined operation. You can complete the settings by performing. In step S114, the network is set so that it can be connected to the same network as another PC, and in step S116, the web server is started so that the web page that can be referred from the PC can be displayed.

FIG. 3 shows an example of a web page provided by a web server.
On the same page, "Case Fw Ver 2.20-2.22" is displayed on the upper right, which is the firmware version of the control program stored in the NAND flash 13.

On this page, "Disk status system ID Fw Ver model name full capacity representative setup operation" is displayed as the title line, and the information corresponding to the title line is displayed in a table format for each disk connected under it. Is displayed.
Here, the "disk" is for identifying an individual disk, and identification codes 1 to 8 correspond to each of the connectors of the HDD connectors 14a and 14b, and are connected to the connector corresponding to the identification code 1. The disc is displayed as "disk 1", and hereinafter, the identification code 8 is similarly displayed.
The "state" indicates a state in which the control unit 11 can exchange a predetermined signal with each disc identified by the disc name with an identification code and is capable of reading and writing, etc., and is not displayed as "recognition". The state in which connection or reading / writing is impossible is displayed as "not connected".

The "system ID" displays the system ID (RAID ID) stored in each disk. When a RAID is constructed by a plurality of disks, individual IDs are assigned. Even if the type of RAID is the same, this system ID will be different if the set of constructed disks is different. By referring to the system ID, it is possible to know whether or not the combination can be reconstructed as a set of RAID.
"Fw Ver" displays the version of the control program stored in each disk. Along with the version information, it also displays whether the content is normal or damaged.

The "model name" is the product name, model number, etc. of each disc, and the "total capacity" is the total capacity.
"Representative" is a display field for selecting which disk is to be represented in the setup. For example, assuming that a plurality of system IDs exist, an operation is performed when selecting which system ID RAID configuration is to be utilized. In this embodiment, in order to enable the disk contents to be continuously used without being erased if possible, at least the representative RAID configuration is subjected to processing so that the contents can be utilized.

The "setup operation" is a display field for selecting and operating specific processing contents that can be selected on the premise that setup is required.
"▼ Format" is a selection to format each disc, the contents stored in the disc are deleted, and then the control program stored in the NAND flash 13 is expanded in a compressed state. Saved to disk in both state and state.

"▼ FwUP" is to upgrade the version of the control program stored in each disk and match the version of the control program stored in the NAND flash 13, and to match the version of the control program stored in the NAND flash 13. It is saved to disk in both compressed and uncompressed states.
In this process, the version information of the disk is unified with the version information of the NAND flash 13.

“▼ FwV maintenance” means that the version of the control program stored in each disk is maintained regardless of the version of the control program stored in the NAND flash 13. Conventionally, the version of the control program stored in the NAND flash 13 is matched with the version of the control program stored in the disk. The control program stored in the NAND flash 13 copies and expands the system to the disk when the system in the disk fails, but the stored contents of the disk may not be utilized in some cases. However, in the network storage 10, the control program of the specifications that can utilize the stored contents of the disk is used, so that the version of the control program stored in the disk is unconditionally stored in the NAND flash 13. I tried not to match the program version.
Even in "▼ FwV maintenance", if there are a plurality of versions of the control program stored in the disk, they are matched with any of the versions. In addition, "Remove" is selected when removing the disc, "Reconfirm" is selected when a new disc is inserted, and "Execute" is selected when executing the selected setup operation. This is a display button for selection.

In order to display the above-mentioned web page, in step S120, the web server waits so that the web page shown in FIG. 3 can be displayed based on the state of the disk.
As described above, in step S120, the control unit 11 displays the disk status, displays the read first version information and the second version information, and displays the system ID. In addition, after displaying the disk status, it waits for a selection from the user and controls according to the selection.

The user accesses a web page provided by a web server. To access a web page, start the browser on your PC.

When the user is selected in step S122 and the execute button is pressed, the corresponding disk reconfiguration is started in step S128, and when the reconfiguration is completed, the web page notifies the user in step S130. In step S132, the system is restarted.
The user can be notified of this web page. Upon receiving the notification on the web page, the user knows that the system will be restarted and waits for the restart. As an example, on a web page, you can say "The disk has been reconfigured. The system will be restarted."

The general flow of processing is as described above, but next, the specific disk state and selectable processing will be described.
FIG. 4 shows the correspondence with the preset processing for each combination of the disk states and the like. In this embodiment, such a combination of disk states and processing correspondence is referred to as a decision table.
There are three processes prepared, and they are named Act2, Act3, and Act4. Each selectable process is

Act2 is "▼ format / ▼ FwUP"
Act3 is "▼ format / ▼ FwUP / ▼ FwV maintenance"
Act4 is "▼ format"
Is. There are multiple options for Act2 and Act3, but for Act4, only format support can be selected. In addition, the combination of all disk states is not described here, but only some cases will be described.

The decision table includes the five disk states 1) to 5). Four items in the state of the disk are abbreviated here, 1) one or more disks, 2) Enclosure compatible Fw (firmware capable of FwUP and FW maintenance processing), and 3) a single system. ID, 4) We will call it Fw match. Further, in view of the operation of selecting the representative of the optical disc, 5) the presence or absence of damage to the control program of the representative optical disc (“representative Fw”) is included as an item of the optical disc status. Regarding Fw matching, the firmware version of the disk selected as a representative is the comparison target, and when the version information of the disk firmware and the firmware version information of the NAND flash 13 match, "S" is displayed, and the disk firmware When the version information and the firmware version information of the NAND flash 13 are high, it is set to "E", and when the firmware version information of the disk is high, it is set to "D". However, in this embodiment, the description of the correspondence when the version information of the firmware of the disk and the version information of the firmware of the NAND flash 13 match will be omitted.

The leftmost combination (union 1) shown in FIG. 4 is 1) one or more disks, 2) no enclosure-compatible Fw, 3) a single system ID, and 4) NAND for Fw matching. The flash 13 is in a high state, and 5) the representative Fw is not damaged. It is assumed that the user has already used the network storage and installed the existing hard disk drive 15 used there in the new network storage 10 or newly installed the hard disk drive 15 for the network storage 10. Will be done.

For this combination, Act2's "▼ format / ▼ FwUP" is an option. When it is a single system ID, it is possible to format it to realize a new RAID configuration, and maintaining the disk contents as a set of RAID configurations by FwUP processing is also an option. That is, the user is not given a choice of only the format, but a corresponding choice of maintaining the stored contents. This corresponds to the process of "holding the stored contents of the storage device when a predetermined condition is satisfied when controlling to unify the first version information in response to selection". Of course, the selection of "▼ format" corresponds to the process of "formatting the storage device according to the selection".

Next, the second combination from the left (union 2) shown in FIG. 4 is 1) one or more discs, 2) an enclosure-compatible Fw, 3) a single system ID, and 4) Fw matching. The NAND flash 13 is in a high state, and 5) the representative Fw is not damaged. It is assumed that the user has incorporated the existing hard disk drive 15 into the new network storage 10 or newly incorporated an unused hard disk drive 15 for the network storage 10.

For this combination, Act3's "▼ format / ▼ FwUP / ▼ FwV maintenance" is an option. When it is a single system ID, it is possible to format it to realize a new RAID configuration, and it is also an option to maintain the disk contents as a set of RAID configurations by processing FwUP and Fw maintenance. Become. Further, since the firmware version of the control program stored in the disk is the version supported by the network storage 10, it is possible to maintain the firmware version of the control program on the disk side. Therefore, as a user, there is one more option.
When "▼ FwV maintenance" is selected, the compressed state control program stored in the disk is overwritten on the NAND flash 13. This is because it is preferable to reconfigure the disk with a control program that was actually configured when the disk fails.

As described above, in the combination of the disk states of the union 2, the user is given not only the selection of the format but also the selection of the correspondence for maintaining the stored contents. Further, the Fw maintenance process is a process of "retaining the stored contents of the storage device when a predetermined condition is satisfied when controlling to unify the second version information of one storage device in response to selection". Equivalent to. "Unify to the second version information of one storage device" means that a representative is selected from a plurality of disks as shown in FIG. 3, and the firmware version of the representative disk is utilized. It represents that.

Next, the second combination from the right (union 3) shown in FIG. 4 is 1) one or more discs, 2) an encroachable Fw, 3) a single system ID, and 4) Fw matching. The disk is in a high state, and 5) the representative Fw is damaged. It is assumed that the user has incorporated the existing hard disk drive 15 into the new network storage 10 or newly incorporated an unused hard disk drive 15 for the network storage 10.

Since it is a single system ID and the firmware version of the control program stored in the disk is the version supported by the network storage 10, it is also possible to maintain the firmware version of the control program on the disk side. Is. However, the control program (Fw) of the disk selected as a representative is damaged. In such a case, the accuracy of the stored contents at the present time cannot be guaranteed, and the accuracy of the stored contents in the future when the operation is continued from that state cannot be guaranteed.
Therefore, for this combination, only the "▼ format" of Act4 is an option. The user is not given the choice of the response to maintain the stored content, but it is the best response in the situation where the accuracy of the stored content cannot be guaranteed.

Next, the rightmost combination (union 4) shown in FIG. 4 has 1) one or more disks, 2) an encroachable Fw, 3) multiple system IDs, and 4) NAND for Fw matching. The flash 13 is in a high state, and 5) the representative Fw is not damaged. It is assumed that the user incorporates the existing hard disk drive 15 into the new network storage 10 or adds a new unused hard disk drive 15 in addition to these. The biggest difference is that 3) there are multiple system IDs.

For this combination, Act3's "▼ format / ▼ FwUP / ▼ FwV maintenance" is an option. Although it has multiple system IDs, the disk on the side where you want to keep the stored contents is selected as a representative, so the RAID configuration of that system ID is maintained by FwUP and Fw maintenance processing, and a set of RAID configurations. One option is to maintain the contents of the disk. Further, since the firmware version of the control program stored in the disk is the version supported by the network storage 10, it is possible to maintain the firmware version of the control program on the disk side. Therefore, as a user, there is one more option.
When "▼ FwV maintenance" is selected, the NAND flash 13 overwrites the compression state control program stored in the representative RAID configuration disk, and the firmware of the non-representative disk is represented. It is better to unify to the firmware of the disk.

As described above, even in the combination of the disk states of the union 4, the user is given not only the selection of the format but also the selection of the correspondence for maintaining the stored contents. In the case of this Fw maintenance, "when controlling to unify the second version information of one storage device in response to selection, the storage contents of another storage device are retained when a predetermined condition is satisfied." Corresponds to processing. Further, although the system IDs of the disk 2 and the disk 3 are the same, the fact that the disk 1 having a system ID different from the system ID is selected as a representative means that "the same when a different system ID is read". It corresponds to "display system ID", and it can be said that determining a representative disk and processing it corresponds to "waiting for selection of system ID and performing control corresponding to the selection".

By the way, as a method of using the network storage 10, a firmware different from the firmware of the NAND flash 13 or the disk may be adopted.
As a modification of the present invention, in such a case, a method of supplying firmware from an external flash memory or the like via the USB connectors 17a and 17b to rewrite the firmware of the NAND flash 13 or the disk will be described.

FIG. 5 is a flowchart corresponding to a method of supplying the latest firmware and rewriting the firmware of the internal memory or the HDD.
In step S300, the control unit 11 confirms whether a memory card is inserted in the USB connectors 17a and 17b, and in step S302, determines whether firmware is stored in the memory card. When the firmware is stored, it is possible that the user desires the process of updating the firmware as described above. Therefore, in step S304, the control unit 11 confirms the version of the control program (firmware) stored in each HDD (hard disk drive 15), and in step S306, the memory card firmware and the HDD. Compare firmware versions.

In step S310, as in the case of Act3, the option of “▼ format / ▼ FwUP / ▼ FwV maintenance” is provided. Offering choices and accepting choices is achieved by browsing with the web server and browser described above.

In step S312, processing corresponding to the user's selection is performed. If "▼ FwUP" is selected here, the firmware of the internal memory and the firmware of the HDD are overwritten with the firmware of the memory card. Since the firmware of the memory card is supplied in the compressed state, the NAND flash 13 which is the internal memory is overwritten as it is, and each HDD (hard disk drive 15) is expanded from the compressed state while overwriting the compressed state. Then, the control program for execution in each HDD is overwritten.
“▼ Format / ▼ FwV maintenance” is the same as in the case of Act3 described above.

Conventionally, in the enclosure of the network storage 10, when the HDD is replaced or newly installed, the version of the firmware incorporated in the enclosure and the version of the firmware written in the HDD must match in order to operate normally. It had to be forcibly unified to a predetermined version, or the HDD was formatted when the operating conditions were not satisfied.

In this case, since it is not a measure to retain the stored contents of the HDD as much as possible, the stored contents of the HDD must be backed up in advance, which is troublesome.
However, according to the present invention, after comparing the firmware version of the NAND flash 13 which is the internal memory with the firmware version of the hard disk drive 15 which is a single or a plurality of storage devices, a storage device such as the hard disk drive 15 is used. By referring to the decision table, it was confirmed whether the condition for maintaining the stored contents of was satisfied, and if it was satisfied, it was possible to take measures to maintain the stored contents.

Needless to say, the present invention is not limited to the above examples. Needless to say, if you are a person skilled in the art,
-Applying the mutually replaceable members and configurations disclosed in the above-described embodiment by appropriately changing the combination thereof.-Although not disclosed in the above-mentioned embodiment, it is a known technique and the above-mentioned embodiment. The members and configurations that are mutually replaceable with the members and configurations disclosed in the above are appropriately replaced, and the combinations thereof are changed and applied. It is an embodiment of the present invention to appropriately replace the members and configurations that can be assumed as substitutes for the members and configurations disclosed by those skilled in the art based on the above, and to change and apply the combinations thereof. Is disclosed as.

10 ... network storage, 11 ... control unit, 12 ... RAM (DDR3), 13 ... NAND flash, 14a, 14b ... HDD connector, 15 ... HDD (hard disk drive), 17a, 17b ... USB connector, 18 ... network interface, 21 … HDD storage space.

Claims (9)

An internal memory for storing the first control program, a connection unit for connecting one or more storage devices for storing the second control program, and a storage device connected to the internal memory and the connection unit to store the storage device. A memory control device including a control unit for controlling.
The control unit
At a predetermined timing, the version information of the first control program is read as the first version information, and the version information of the second control program is read as the second version information.
The read first version information and the second version information are displayed, and
The control content corresponding to the combination of the first version information and the second version information is displayed, and the selection is waited for.
A memory control device characterized by performing control corresponding to selection. The control unit
For each combination of the first version information and the second version information, the content of the preset processing is displayed and the selection is waited for.
The storage control device according to claim 1. If the combination of the first version information and the second version information includes a combination in which the condition for maintaining the stored contents of the storage device is satisfied, the control unit performs a process of maintaining the stored contents. Made it possible to select the contents of
The storage control device according to claim 2. The storage control device according to claim 3 , wherein the control unit controls to unify version information in response to selection. The fourth aspect of the present invention is characterized in that the control unit retains the stored contents of the storage device when a predetermined condition is satisfied when performing control to unify the first version information in response to selection. The memory control device described. When the control unit performs control to unify the second version information of one storage device in response to selection, the control unit holds the storage contents of the other storage device when a predetermined condition is satisfied. The storage control device according to claim 4. The sixth aspect of claim 6, wherein the control unit displays the system ID when a different system ID is read in the storage device, waits for the selection of the system ID, and performs control corresponding to the selection. Memory control device. The storage control device according to claim 3 , wherein the control unit formats the storage device in response to selection. An internal memory for storing the first control program, a connection unit for connecting one or more storage devices for storing the second control program, and a storage device connected to the internal memory and the connection unit to store the storage device. It is a memory control method of a memory control device including a control unit for controlling.
A step of reading the version information of the first control program as the first version information and reading the version information of the second control program as the second version information at a predetermined timing.
The process of displaying the read first version information and the second version information, and
A step of displaying the control content corresponding to the combination of the first version information and the second version information and waiting for selection.
A memory control method characterized in that a process of performing control corresponding to selection is performed.

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