JP4424169B2 - Disk storage system, its cable misconnection detection method, disk adapter - Google Patents

Description

  The present invention relates to a disk storage system having a fiber channel / arbitrated loop (hereinafter abbreviated as FC-AL) configuration in which a plurality of disk adapters and a plurality of disk enclosures are connected by cables and duplexed, and the cables are erroneously connected. The present invention relates to a detection method and a disk adapter, and more particularly, to a disk storage system that detects an erroneous connection of a cable to improve reliability and maintainability, a method of detecting an erroneous connection of the cable, and a disk adapter.

  Conventionally, as a technique for detecting this type of cable misconnection, there is a technique for detecting a correct connection form and basic operation state of a disk subsystem (see, for example, Patent Document 1).

  The technique of Patent Document 1 detects connection of an external disk device group connected to an external connection backplane and confirmation of basic operation by a disk subsystem management program of the main device. The external connection backplane is provided with access response operation storage means for each disk series. The disk subsystem management program is a means for confirming the presence or absence of a management cable connection between the external connection backplane and the main unit, and a means for analyzing the cable connection to each disk system by an access response when the management cable connection is correct. With. With this configuration, correct cable connection and connection and operation of each disk are detected.

  In some disk array devices, it is determined whether or not a plurality of disk devices can be normally used as a whole (see, for example, Patent Document 2).

  The technique of Patent Document 2 includes a disk array device including a plurality of hard disk devices and a disk array control unit that is connected to the hard disk devices and performs data read / write control. Each hard disk device is provided with a disk connection state determination information storage area for writing disk connection state determination information. The disk connection state determination information includes array control unit model specifying information, creating device individual specifying information, disk device set specifying information, and disk device connecting position specifying information. The disk array control unit determines whether or not a plurality of hard disk devices can be used based on the four pieces of specific information.

JP 2000-122810 A JP-A-10-240451

  In the technique described in Patent Document 1, an access response operation storage unit and a host device interface are provided for each disk series on the SCSI backplane. A lower-level device interface is provided in the main unit. Both interfaces are connected with a management cable, and correct cable connection and connection and operation of each disk are detected. Therefore, in addition to an interface for connecting each disk series and the SCSI adapter, an upper device interface and a lower device interface are required. Further, although a cable misconnection can be detected with respect to a SCSI disk storage system, there is a problem that it cannot be applied to a disk storage system having a configuration in which the main unit and the SCSI series are duplicated.

  The technique described in Patent Document 2 is a configuration in which a disk connection state determination information storage area for writing disk connection state determination information is provided in each hard disk device. Therefore, when the cable is erroneously connected, the disk connection state determination information is written to an incorrect hard disk device that is not normal, and there is a problem that the erroneous connection of the cable cannot be detected.

  An object of the present invention is to detect and display an incorrect connection of a cable when a disk storage system in which a plurality of disk adapters and a plurality of disk enclosures are connected with a cable and each of them is duplexed is started. DISCLOSURE OF THE INVENTION It is an object of the present invention to provide a disk storage system, a cable misconnection detection method, and a disk adapter that are improved in reliability and maintainability.

  A disk storage system misconnection detection method for a disk storage system according to the present invention is a disk storage system misconnection detection method for a disk storage system in which a plurality of disk adapters having a plurality of ports and a plurality of disk enclosures are connected with a cable to duplicate each other. When starting the disk adapter, it is determined whether or not the partner disk adapter is being started, and the connection information table in the shared memory is initialized. Registering disk device specific information in the connection information table when incorporating into the system, and registering the disk device specific information in the connection information table when the disk adapter started later incorporates the disk device into the disk storage system Whether the unique information matches A step of compare, specific information, characterized in that a step of displaying an indicator that the erroneous connection of the cable when the mismatch.

  A disk storage system misconnection detection method for a disk storage system according to the present invention is a disk storage system misconnection detection method for a disk storage system in which a plurality of disk adapters having a plurality of ports and a plurality of disk enclosures are connected with a cable to duplicate each other. , Having a step of accessing the shared memory from the disk adapter, the shared memory having a step of storing the connection information and unique information of the disk device in the connection information table, and when the disk adapter starts up the disk adapter The inter-adapter communication control unit determines whether the other-side disk adapter is active, the disk control unit performs access control and port management for the disk device, and the shared memory control unit Steps for controlling shared memory and adapting The communication control unit, the disk control unit, and the shared memory control unit are controlled by the processor, and the control program is stored in the storage circuit, and the shared memory control unit initializes the connection information table. And a step of registering the unique information of the disk device in the connection information table when the disk adapter that is first activated incorporates the disk device into the disk storage system. A step of comparing whether or not the unique information of the disk device matches the unique information of the disk device registered in the connection information table when being incorporated into the storage system. When there is a step to display with an indicator that the cable is incorrectly connected And wherein the Rukoto.

  The connection information table has connection information in addition to unique information.

  The connection information includes a port number, a disk number, and a valid flag.

  The disk number has an identification number of a disk device in the disk enclosure.

  The unique information has a node name as a unique value.

  The step of initializing the connection information table includes a step of invalidating a valid flag when the disk adapter on the other side is not activated.

  The inter-adapter communication control unit has a step of determining whether the disk adapter on the other side is being activated based on whether it is in a ready state or a not-ready state.

  The indicator has a light emitting diode or a lamp.

  The disk storage system is characterized by having a Fiber Channel arbitrated loop.

  The disk storage system according to the present invention is a disk storage system in which a plurality of disk adapters having a plurality of ports and a plurality of disk enclosures are connected with cables to duplicate each other. A shared memory with a connection information table for storing information, and when the disk adapter starts up, it determines whether the partner disk adapter is running and initializes the connection information table in the shared memory The means for registering, the means for registering the unique information of the disk device in the connection information table, and whether the unique information of the disk device connected to the other disk adapter matches the unique information registered in the connection information table. If there is a discrepancy between the means for comparing And having a means for displaying an indicator.

  The disk storage system of the present invention has a shared memory that is accessed from the disk adapter in a disk storage system in which a plurality of disk adapters having a plurality of ports and a plurality of disk enclosures are connected by cables to duplicate each other. The memory has a connection information table for storing the connection information and unique information of the disk device, and the disk adapter determines whether or not the partner disk adapter is being activated when the disk adapter is activated. , A disk control unit for controlling access to the disk device and managing ports, a shared memory control unit for controlling shared memory, an inter-adapter communication control unit, a disk control unit, and a shared memory control unit And a storage circuit for storing the control program. The unit includes means for initializing the connection information table, and means for registering the unique information of the disk device in the connection information table when the disk adapter first activated incorporates the disk device into the disk storage system. And a means for comparing whether or not the disk device unique information matches the disk device unique information registered in the connection information table when the disk adapter started later incorporates the disk device into the disk storage system. The disk control unit has means for displaying an indicator that the cable is erroneously connected when the unique information does not match.

  The connection information includes a port number, a disk number, and a valid flag.

  The disk number has an identification number of a disk device in the disk enclosure.

  The unique information has a node name as a unique value.

  The means for initializing the connection information table includes means for invalidating the valid flag when the disk adapter on the other side is not active.

  The inter-adapter communication control unit has means for determining whether or not the partner disk adapter is being activated based on whether it is in a ready state or a not-ready state.

  The indicator has a light emitting diode or a lamp.

  The disk adapter and the disk enclosure have a fiber channel / arbitrated loop connection that duplicates each loop.

  The disk adapter according to the present invention is a disk adapter having a plurality of ports that are connected to a plurality of disk enclosures by cables to duplicate the disk storage system, and whether or not the partner disk adapter is being started up when starting up. Shared controller for controlling a shared memory having a connection information table for storing connection information and unique information of a disk device, a disk control unit for controlling access to a disk device and managing a port, A memory control unit; a processor that controls the inter-adapter communication control unit, the disk control unit, and the shared memory control unit; and a storage circuit that stores a control program. A means for initializing the connection information of the disk device when it is not running and Means for registering information in the connection information table, and the processor compares whether or not the unique information of the disk device connected to the disk adapter on the other side matches the unique information registered in the connection information table And the disk control unit has means for displaying an indicator that the cable is erroneously connected when the unique information does not match.

  According to the disk storage system, the cable misconnection detection method, and the disk adapter of the present invention, even if the cable between the ports is incorrectly connected, the misconnection of the cable is detected and displayed when the system is started, and Unauthorized access can be prevented, and the reliability and maintainability of the system can be improved.

  The reason for this is that a connection information table for managing disk device specific information is provided in a shared memory shared by multiple disk adapters, the connection information table is initialized and registered, and the registered unique information and access This is because there is provided means for comparing the unique information of the disk device and means for displaying an erroneous cable connection according to the comparison result.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic block diagram showing a disk storage system 100 of the present invention.

  The disk storage system 100 is an FC-AL system as an example.

  Referring to FIG. 1, a disk storage system 100 includes two disk adapters 1 and 2, two disk enclosures 20 and 30, cables 41, 42, 43, and 44 connecting them, and disk adapters 1 and 2. And a shared memory 19 that can share information between them.

  The disk enclosure 20 contains a plurality of FC-AL compatible disk devices 21, 22, and 23 having two loops (loop A and loop B). Here, the loop A is connected to the port 0 of the disk adapter 1 using the cable 41, and the loop B is connected to the port 0 of the disk adapter 2 using the cable 42. The disk devices 21, 22, and 23 are each assigned a unique disk number (Loop ID) 62 within the loop so that they can be identified within the loop of the disk enclosure 20 (although they are assigned based on the FC-AL specification, Detailed description of FC-AL specification is omitted).

  The disk enclosure 30 includes a plurality of FC-AL compatible disk devices 24, 25, and 26 having two loops (loop A and loop B). Here, loop A is connected to port 1 of the disk adapter 1 using a cable 43, and loop B is connected to port 1 of the disk adapter 2 using a cable 44. The disk devices 24, 25, and 26 assign a disk number 62 that is unique within the loop so that they can be identified within the loop of the disk enclosure 30.

  The disk adapter 1 includes an MPU (microprocessor unit) 11, a storage circuit 12, a shared memory control unit 13, FC-AL control units 14 and 15 that are disk control units, and an inter-adapter communication control unit 16. To do. The disk adapter 1 is provided with a plurality of FC-AL ports (two ports of port 0 and port 1 in FIG. 1).

  The MPU 11 controls the entire disk adapter 1 (controls the shared memory control unit 13, the FC-AL control units 14 and 15, and the inter-adapter communication control unit 16), and the control program (not shown) is stored in the memory. Store in circuit 12.

  The shared memory control unit 13 accesses the shared memory 19 and initializes, reads, and updates the connection information table 60 in the shared memory 19.

  Here, the connection information table 60 will be described with reference to the drawings.

  FIG. 5 is a diagram for explaining the connection information table 60.

  Referring to FIG. 5, the connection information table 60 includes a port number 61, a disk number 62, a valid flag 63, and a node name (Node Name) 64 as unique information.

  The port number 61 indicates a port number managed by the FC-AL control units 14 to 15 and 16 to 17 of the disk adapters 1 and 2. The disk number 62 indicates an identification number (Loop ID) in the loop of each of the disk devices 21 to 23 and 24 to 26 in the disk enclosures 20 and 30. The node name 64 is a value that each of the disk devices 21 to 26 has, and is defined in advance so as to be a unique value. The valid flag 63 is a flag indicating whether or not the stored node name 64 is valid.

  The FC-AL control unit 14 performs access control for the disk devices 21 to 23 in the loop and management of the port 0, and the FC-AL control unit 15 controls access to the disk devices 24 to 26 in the loop and port 1. Management. The FC-AL control unit 14 accesses the loop A side of each disk device 21 to 23 in the disk enclosure 20, and the FC-AL control unit 15 accesses the loop A side of each disk device 24 to 26 in the disk enclosure 30. Is possible.

  Further, the FC-AL control units 14 and 15 include an indicator (not shown) indicating that the cable is erroneously connected. The indicator is composed of a light emitting diode or a lamp.

  The inter-adapter communication control unit 16 communicates information with the disk adapter 2 on the other side. The communication information is information indicating whether the partner disk adapter 2 has been activated (Ready state) or not activated (Not Ready state).

  The disk adapter 2 connects the FC-AL control unit 18 to the loop B side of each disk device 21 to 23 in the disk enclosure 20, and connects the FC-AL control unit 17 to each disk device 24 to 26 in the disk enclosure 30. Connect to loop B side. Other than this connection configuration, it is the same as the disk adapter 1 described above.

  Next, an operation for detecting a cable misconnection in the disk storage system configured as described above will be described with reference to the drawings.

  FIG. 3 is a flowchart showing an operation when starting the disk adapters 1 and 2.

  Referring to FIG. 3, when the disk adapters 1 and 2 are activated, the inter-adapter communication control unit 16 first checks whether the partner disk adapters 2 and 1 are activated (S101).

  When the partner disk adapters 2 and 1 are not activated (Not Ready), the shared memory control unit 13 invalidates and initializes the validity flag 63 of the connection information table 60 in the shared memory 19 (S102). ). For example, “0” is written as the invalidation processing of the valid flag 63.

  On the other hand, since the connection information table 60 is initialized by the partner disk adapter 2 or 1 that has been activated first when the partner disk adapter 2 or 1 is in the activated state (Ready), the connection information table 60 60 is not initialized.

  Next, an operation when the disk devices 21 to 26 are incorporated into the disk storage system 100 will be described with reference to the drawings.

  FIG. 4 is a flowchart showing an operation when the disk adapters 1 and 2 incorporate the disk devices 21 to 26 into the disk storage system 100.

  First, as an example, a description will be given of an operation in which the disk adapter 1 is first activated and the disk devices 21, 22, and 23 connected to the port 0 of the disk adapter 1 are incorporated into the disk storage system 100.

  Referring to FIG. 4, the disk adapter 1 performs login to the disk device 21 in the disk enclosure 20 by the FC-AL control unit 14 (S201).

  Thereby, the disk adapter 1 can obtain the node name 64 of the disk device 21. The operation for acquiring the node name is a normal operation in the FC-AL system.

  The disk adapter 1 checks whether or not the node name 64 of the disk device 21 is registered in the connection information table 60 (S202).

At this time, since the disk adapter 1 is the first activation, the valid flag 63 is invalid, and the node name 64 of the disk device 21 is not registered in the connection information table 60. Therefore, the disk adapter 1 registers the node name 64 of the disk device 21 in the connection information table 60 in association with the port number 61 of the port to which the disk device 21 is connected by the shared memory control unit 13, and the valid flag 63 is validated (S203). For example, “1” is written.

  After registering the node name 64 and validating the valid flag 63, the disk adapter 1 incorporates the disk device 21 into the disk storage system 100 (S204).

  The disk adapter 1 performs the same processes as the processes (S201) to (S203) for the disk apparatus 21 on the remaining disk apparatuses 22 and 23, and incorporates them into the disk storage system 100 (S204).

  When all the disk devices 21 to 26 are incorporated in the disk storage system 100, the activation of the disk adapter 1 is completed. The operation of incorporating the disk devices 24 to 26 connected to the port 1 of the disk adapter 1 into the disk storage system 100 is the same as the above operation, and thus the description thereof is omitted.

  Next, the operation of starting the disk adapter 2 from the above state and incorporating the disk devices 21, 22, and 23 connected to the port 0 of the disk adapter 2 into the disk storage system 100 will be described with reference to FIG. .

  The disk adapter 2 performs login to the disk device 21 by the FC-AL control unit 18 as in the case of the disk adapter 1 described above (S201).

  The disk adapter 2 checks whether or not the node name 64 of the disk device 21 acquired by login is registered in the connection information table 60 (S202).

Since the disk adapter 2 is not initially activated, the node name 4 of the disk device 21 is already registered in the connection information table 60. The correspondence relationship between the node name 64 and the port number 61 of the disk device 21 is compared with the correspondence relationship between the node name 64 and the port number 61 registered in the connection information table 60 (S205). It should be noted that the comparison between the correspondence between the node name 64 and the port number 61 acquired by login and the correspondence between the node name 64 and the port number 61 registered in the connection information table 60 is as follows. This is performed by the comparison means (not shown) of the MPU 11.

  In the above (S205), when the cable connection is correct (state shown in FIG. 1), since the node names 64 match, the disk device 21 is incorporated into the disk storage system 100 (S204).

  The remaining disk devices 22 and 23 execute similar processing, the disk devices 22 and 23 are incorporated into the disk storage system 100, and the activation of the disk adapter 2 is completed.

In the above (S205), when the cable connection is incorrect as shown in FIG. 2, the comparison result of the correspondence relationship between the node name 64 and the port number 61 of the disk device 21 becomes inconsistent. The disk adapter 2 does not incorporate the disk device 21 into the disk storage system 100, and notifies the user that there is an incorrect cable connection by using the indicator of the FC-AL control unit 18 (S206).

  FIG. 2 is a schematic block diagram showing an embodiment when a cable is erroneously connected in the disk storage system 100.

  Referring to FIG. 2, a cable 53 from port 0 of the FC-AL control unit 14 is connected to the disk enclosure 30, and a cable 51 from port 1 of the FC-AL control unit 15 is connected to the disk disk enclosure 20. . On the other hand, a cable 42 from the port 0 of the FC-AL control unit 18 is connected to the disk enclosure 20, and a cable 44 from the port 1 of the FC-AL control unit 17 is connected to the disk disk enclosure 30.

As shown in FIG. 2, when the connection of one port is wrongly connected , the correspondence between the node name 64 and the port number 61 of the disk devices 21 to 23 obtained by logging in by the FC-AL control unit 18 and the connection information Naturally, the correspondence between the node names 64 and the port numbers 61 of the disk devices 24 to 26 registered in the table 60 does not match.

Therefore, by comparing the correspondence between the node names 64 and the port numbers 61 of the disk devices 21 to 26, it is possible to detect an erroneous cable connection. When an incorrect cable connection is detected, the disk adapter 2 prevents unauthorized access to the disk devices 21 to 26 and prevents data inconsistency by not incorporating the disk device 21 into the disk storage system 100. In addition, the reliability of the disk storage system 100 can be improved.

  Further, when an erroneous connection of a cable is detected, the maintainability of the disk storage system 100 can be improved by displaying it with an indicator of the FC-AL control unit and notifying the user.

  In the above-described embodiment, the FC-AL system having a two-port configuration is described. However, it is obvious that a cable misconnection can be detected even in a system having three or more FC-AL ports. Needless to say, this case is also included in the present invention.

1 is a schematic block diagram showing a disk storage system of the present invention. It is a schematic block diagram showing an embodiment when a cable is erroneously connected. It is a flowchart which shows the operation | movement when starting a disk adapter. It is a flowchart which shows operation | movement when incorporating each disk apparatus in a disk storage system. It is a figure for demonstrating a connection information table.

Explanation of symbols

1, 2 Disk adapter 11 MPU
DESCRIPTION OF SYMBOLS 12 Memory circuit 13 Shared memory control part 14, 15 FC-AL control part 16 Inter-adapter communication control part 17, 18 FC-AL control part 19 Shared memory 20, 30 Disk enclosure 21, 22, 23 Disk apparatus 24, 25, 26 Disk device 41, 42, 43 Cable 44, 51, 53 Cable 60 Connection information table 61 Port number 62 Disk number 63 Valid flag 64 Node name 100 Disk storage system

Claims (17)

By a respective each of the ports and a plurality of disk enclosures in each of a plurality of disk adapter having a plurality of ports connected by cable, to connect all the each of the plurality of disk adapters of the plurality of disk enclosures A disk storage system cable misconnection detection method for duplicating each of the disk adapter and the disk enclosure ,
Said port said disk adapter, mating said disk adapter when launching it is determined whether the running, if the mating said disk adapter is not activated, which is stored in the shared memory Initializing the connection information table including the port number and the disk device specific information ;
It said disk adapter, if the unique information of the disk device when incorporating the disk device to the disk storage system is not registered in the connection information table, the unique information of the disk device the disk device is connected Registering in the connection information table in association with the port number of the port being
If the disk adapter is that the unique information of the disk device when incorporating the disk device to the disk storage system is registered in the connection information table, the correspondence between the inherent information and the port number of the disk device comparing whether the unique information related to the registered in the connection information table and the correspondence between the port numbers match,
The disk adapter includes a step of displaying a cable erroneous connection of the disk storage system by an indicator when the correspondence between the unique information and the port number is inconsistent. Detection method. By a respective each of the ports and a plurality of disk enclosures in each of a plurality of disk adapter having a plurality of ports connected by cable, to connect all the each of the plurality of disk adapters of the plurality of disk enclosures A disk storage system cable misconnection detection method for duplicating each of the disk adapter and the disk enclosure ,
Adapter communication control unit of the previous SL disk adapter, the method comprising judged whether mating said disk adapter is being activated when the disk adapter is activated,
The shared memory control unit of the disk adapter initializes a connection information table including the port number of the port and the unique information of the disk device stored in the shared memory when the disk adapter on the other side is not activated. Steps to
If the said shared memory control unit of the disk adapter, the unique information of the disk device when the disk adapter incorporating the disk device to the disk storage system is not registered in the connection information table, of the disk device Registering the unique information in the connection information table in association with the port number of the port to which the disk device is connected ;
If the processor of the disk adapter, the unique information of the disk device when the disk adapter incorporating the disk device to the disk storage system is registered in the connection information table, and the unique information of the disk device comparing whether the previous SL-specific information registered in the connection information table with correspondence between the port number and the correspondence between the port numbers match,
Disk control unit of the disk adapter, the case correspondence between the inherent information and the port number do not match, the disk storage system, which comprises a step of displaying said a misconnection cable indicator Cable misconnection detection method. The connection information table further includes a disk number which is an identification number within the disk enclosure, according to claim 1 or 2 wherein, characterized in that it comprises a valid flag indicating whether or not the specific information is valid To detect cable connection errors in disk storage systems. The specific information, incorrect cable connection detection method according to claim 1 or 2, wherein the disk storage system wherein the Node Name der Rukoto be the only value. Wherein the step of initializing a connection information table, the Far End the disk adapter is not activated, the valid flag erroneous cable of claim 3, wherein the disk storage system, characterized that you disable the connection detection Method. The step of determining whether or not the disk adapter on the other side is active is determined based on whether the disk adapter on the other side is active or not in a ready state or a not-ready state. incorrect cable connection detection method according to claim 2, wherein the disk storage system, characterized that you are. The indicator, incorrect cable connection detection method according to claim 1 or 2, wherein the disk storage system and said light-emitting diodes or lamps der Rukoto. Wherein the disk adapter and the disk enclosure, incorrect cable connection detection method according to claim 1 or 2, wherein the disk storage system, characterized in Rukoto connected by respective Fiber Channel ARE bit Retiddo loop duplicating loop. A plurality of disk adapters having a plurality of ports;
Multiple disk enclosures,
The accessed from the disk adapter comprises <br/> a shared memory for storing the connection information table including the specific information of the port number and the disk device of said ports,
By connecting each of the ports in each of the plurality of disk adapters and each of the plurality of disk enclosures with a cable, and connecting each of the plurality of disk adapters and all of the plurality of disk enclosures, the disk Duplicate each of the adapter and the disk enclosure,
The disk adapter is
Means for determining whether or not the other-side disk adapter is being activated at the time of activation, and initializing the connection information table in the shared memory if the other-side disk adapter is not activated; ,
If the unique information of the disk device when incorporating the disk device to the disk storage system is not registered in the connection information table, the unique information of the disk device of the port to which the disk drive is connected Means for registering in the connection information table in association with a port number ;
When said specific information is registered in the connection information table, the inherent information and the corresponding relation with the connection information and the port number of the disk device of the disk device when incorporating the disk device to the disk storage system Means for comparing whether or not the correspondence between the specific information registered in the table and the port number matches;
A disk storage system comprising: an indicator for indicating that the cable is erroneously connected when the correspondence between the unique information and the port number does not match. A plurality of disk adapters having a plurality of ports;
Multiple disk enclosures,
A shared memory storing a connection information table accessed from the disk adapter and including a port number of the port and unique information of the disk device ;
With
By connecting each of the ports in each of the plurality of disk adapters and each of the plurality of disk enclosures with a cable, and connecting each of the plurality of disk adapters and all of the plurality of disk enclosures, the disk Duplicate each of the adapter and the disk enclosure,
The disk adapter is
An inter-adapter communication control unit that determines whether or not the other-side disk adapter is being activated,
A disk control unit for controlling access to the disk device and managing the port;
A shared memory control unit for controlling the shared memory;
A processor that controls the inter-adapter communication control unit, the disk control unit, and the shared memory control unit;
A storage circuit for storing the control program,
The shared memory control unit
Means for initializing the connection information table if the disk adapter on the other side is not active;
Wherein when the unique information of the disk device when the disk adapter incorporating the disk device to the disk storage system is not registered in the connection information table, the unique information is connected to the disk device of the disk device Means for registering in the connection information table in association with the port number of the port being
The processor is
If the disk adapter the unique information of the disk device when incorporating the disk device to the disk storage system is registered in the connection information table, correspondence between the inherent information and the port number of the disk device and means for comparing said whether before being registered in the connection information table Symbol unique information and correspondence between the port number matches the,
The disk controller is
A disk storage system comprising means for displaying an indicator that the cable is erroneously connected when the correspondence between the unique information and the port number does not match. The connection information table further includes a disk number which is an identification number within the disk enclosure, the inherent information according to claim 9 or 10, wherein it contains a valid flag indicating whether or not the effective Disk storage system. The unique information, the disk storage system of claim 9, wherein the node name der Rukoto be the only value. It said means for initializing a connection information table, when the mating said disk adapter is not activated, the disk storage system of claim 11, wherein that you disable the valid flag. Said adapter communication control unit, the disk of claim 10, wherein that you the mating said disk adapter is determined by whether the not-ready condition or a whether a ready state or a running Storage system. The indicator disc storage system according to claim 9 or 10, wherein the light-emitting diodes or lamps der Rukoto. Wherein the disk adapter and the disk enclosure, the disk storage system of claim 9 or 10, wherein connected by Fiber Channel ARE bit Retiddo loop duplicating each loop, characterized in Rukoto. Each of the ports in each of the plurality of disk adapters having a plurality of ports is connected to each of the plurality of disk enclosures by a cable, and each of the plurality of disk adapters is connected to all of the plurality of disk enclosures. The disk adapter in the disk storage system for duplicating each of the disk adapter and the disk enclosure ,
An inter-adapter communication control unit that determines whether or not the other-side disk adapter is being activated,
A disk control unit for controlling access to the disk device and managing the port;
A shared memory control unit that controls a shared memory that stores a connection information table including a port number of the port and unique information of the disk device ;
A processor that controls the inter-adapter communication control unit, the disk control unit, and the shared memory control unit;
And a storage circuit for storing the control program,
The shared memory control unit
Means for initializing the connection information table if the disk adapter on the other side is not active;
If the unique information of the disk device when incorporating the disk drive is not registered in the connection information table, correspondence between the inherent information a port number of the port to which the disk drive is connected to the disk device and means for registering the connection information table Te,
The processor is
If the unique information of the disk device when incorporating the disk device is registered in the connection information table, and registers the unique information and the corresponding relation with the connection information table of the port number of the disk device Means for comparing whether or not the correspondence between the unique information and the port number matches,
The disk controller is
A disk adapter comprising means for displaying an indicator that the cable is erroneously connected when the correspondence between the unique information and the port number does not match.

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