JP4702302B2 - NAS system - Google Patents

Description

  The present invention relates to a NAS system including a NAS device that is separated into a disk array device and a data control device, and more particularly to a NAS system that performs power supply control processing for the disk array device and the data control device.

  In a conventional storage system, a NAS (Network Attached Storage) device having a disk array device for storing data and a data control device for controlling data input / output between the disk array device and a network is known. In the NAS apparatus, since the disk array apparatus and the data control apparatus are constructed as separate apparatuses, the power of both apparatuses is supplied by different systems. If the power supplies of both devices are separate systems, the power of both devices is turned on and off asynchronously, and the storage data cannot be accessed because the disk array device is not activated. Regardless, the data control device is recognized by the host computer connected to the network, and there is a possibility that problems such as repeated access from the host computer may occur. For this purpose, in order to start or stop the start of the data control device and the disk array device, a power management server is prepared individually, or linked software for performing processing in cooperation with the data control device and the disk array device. There is a problem that the manufacturing cost increases.

  Therefore, in the conventional NAS device, the storage control device (disk array device) transmits a predetermined startup completion signal to the adapter device (data control device) after startup, and the adapter device receives the startup completion signal from the storage control device. And the adapter device transmits the cache data to the storage control device when the activation is stopped, and then transmits a predetermined first signal to the storage control device. In response to the first signal from the memory device, the cache data is stored in the storage device, and then the predetermined second signal is transmitted to the adapter device, and then the activation is stopped. A storage system is disclosed in which activation is stopped after reception (see Patent Document 1).

JP 2006-215664 A

  However, in the NAS device described in Patent Document 1, a signal for starting or stopping activation must be generated between the storage control device (disk array device) and the adapter device (data control device). It is necessary to prepare cooperation software for each of the device and the adapter device, and management of each of the storage control device and the adapter device is complicated.

  A main object of the present invention is to enable power control by linking a data control device and a disk array device without using linked software.

  In one aspect of the present invention, in a NAS system including a NAS device that is separated into a disk array device and a data control device, the disk array device that stores data and reads and writes data, and the disk array device A data control device that controls input / output of data between networks, and a power control server that performs power control processing of the disk array device and the data control device, the data control device from the power control server When the shutdown instruction is received, the shutdown process of all the programs currently being executed or scheduled to be executed is executed, and the disk array device is linked down. The disk array device is linked down to the data control device. By detecting itself voluntarily Shutdown processing of all programs being executed or scheduled to be executed, and when the first time has elapsed since the power control server issued the shutdown instruction to the data control device, The power supply is controlled to be stopped, and the power supply to the disk array device is controlled to be stopped when the second time has passed after the first time has passed. To do.

  In the NAS system of the present invention, the disk array device is a RAID-type storage device in which a plurality of hard disk drives are connected to one controller, and a plurality of ports between the disk array device and the data control device are not connected. The disk array device is communicably connected via a fiber channel cable, and the disk array device autonomously executes the shutdown process related to itself by detecting link down of all ports with the data control device. Is preferred.

  In the NAS system of the present invention, it is preferable that the disk array device voluntarily executes the shutdown process related to itself when a certain time has elapsed after detecting a link down with the data control device.

  In the NAS system according to the present invention, it is preferable that the disk array device performs a write-back of the unwritten data when the unwritten data remains in the cache during the shutdown process related to the disk array device.

  In the NAS system according to the present invention, it is preferable that the first time is a maximum time required from the start to the completion of the shutdown processing related to the data control device.

  In the NAS system of the present invention, it is preferable that the second time is a maximum time taken from the start to the completion of the shutdown processing including the write back of the disk array device.

  The NAS system of the present invention comprises a first power supply device that supplies power to the data control device, and a second power supply device that supplies power to the disk array device, and the power control server includes: When the first time has elapsed since the shutdown instruction to the data control apparatus has been issued, the first power supply stop instruction is issued to the first power supply apparatus, and the first power supply stop instruction is issued. The second power supply device is instructed to stop the second power supply when the second time has elapsed, and the first power supply device instructs the first power supply to stop from the power control server. And the second power supply device stops the power supply to the data control device based on the first power supply stop instruction from the power supply control server. It is preferred to stop the power supply to the ray device.

  According to the present invention, in a NAS system including a NAS device in which a data control device and a disk array device are separated, power control can be performed without providing a power control server individually. In addition, cooperation processing can be performed by one power control server without using software that cooperates in power control between the data control device and the disk array device.

(Embodiment 1)
A NAS system according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of a NAS system according to the first embodiment of the present invention.

  The NAS system 1 is a system including a storage device (NAS (Network Attached Storage) device 1 a) of a type that is directly connected to the network 3. The NAS system 1 is communicably connected to a host computer 2 via a network 3. The NAS system 1 includes a NAS device 1a including a data control device 11, a disk array device 12, and an FC cable 13, a power control server 14, a first power supply device 15, and a second power supply device 16. .

  The data control device 11 is a NAS controller in the NAS device 1 a and is directly connected to the network 3. The data control device 11 performs predetermined information processing based on a predetermined program. The data control device 11 controls data input / output between the disk array device 12 and the network 3. The data control device 11 receives the data access request transmitted from the host computer 2, and when the data access request is a data read request, requests the disk array device 12 to read the corresponding data, and responds to the request. The read data is transmitted to the host computer 2. When the data access request from the host computer 2 is a data write request, the data control device 11 requests the disk array device 12 to write the data included in the write request. The data control device 11 is electrically connected to the power control server 14 and receives a shutdown instruction from the power control server 14 to execute shutdown (end processing of all programs being executed or scheduled to be executed) The disk array device 12 is linked down (FC link down). The data control device 11 is electrically connected to the first power supply device 15 and operates by receiving power from the first power supply device 15.

  The disk array device 12 is a storage device that stores an OS and data for NAS control. The disk array device 12 may be a RAID (Redundant Array of Inexpensive Disks) type storage device in which a plurality of hard disk drives (not shown) are connected to one controller (not shown), for example. A controller (not shown) in the disk array device 12 is communicably connected to the data control device 11 via the FC cable 13. The disk array device 12 performs predetermined information processing based on a predetermined program. The disk array device 12 reads corresponding data from a hard disk drive (not shown) under the control of a controller (not shown) in response to a read request from the data control device 11, and reads the read data to the data control device 11. Send to. In response to a write request from the data control device 11, the disk array device 12 writes data included in the write request to a hard disk drive (not shown) under the control of a controller (not shown). When the disk array device 12 detects an FC link down with the data control device 11, the disk array device 12 performs a shutdown process when a predetermined condition is satisfied. The disk array device 12 is electrically connected to the power control server 14 via the second power supply device 16 and operates by receiving power from the second power supply device 16.

  The FC cable 13 is a fiber channel cable, and is a cable that connects a plurality of ports (FC ports) in the data control device 11 and the disk array device 12 so that they can communicate in parallel. The FC cable 13 is connected to each controller (not shown) in the disk array device 12.

  The power control server 14 is a computer server that performs power control processing for the disk array device 12 and the data control device 11. The power control server 14 directly performs power control processing for the first power supply device 15, the second power supply device 16, and the data control device 11. The power supply control server 14 performs predetermined information processing based on a predetermined program. The power supply control server 14 transmits a shutdown instruction to the data control device 11 when performing power supply control (power-off control). The power control server 14 instructs the data control device 11 to turn off the power. When performing power control, the power control server 14 issues a power supply instruction or a power supply stop instruction to the first power supply device 15 and the second power supply device 16 based on a predetermined condition.

  The first power supply device 15 is a device that supplies power to the data control device 11. The first power supply device 15 includes a standby power source (for example, a storage battery) serving as a power source in an emergency, a normal power source (for example, an external power source) serving as a normal power source, and a switching unit that switches between both power sources. And an uninterruptible power supply (UPS). The first power supply device 15 performs power supply or power supply stop based on an instruction from the power supply control server 14. The first power supply device 15 supplies power to the data control device 11 based on a power output instruction from the power control server 14. The first power supply device 15 stops the power supply to the data control device 11 based on the power supply stop instruction from the power control server 14.

  The second power supply device 16 is a device that supplies power to the disk array device 12. The second power supply device 16 includes a standby power source (for example, a storage battery) serving as a power source in an emergency, a normal power source (for example, an external power source) serving as a normal power source, and a switching unit that switches between both power sources. And an uninterruptible power supply (UPS). The second power supply device 16 performs power supply or power supply stop based on an instruction from the power supply control server 14. The second power supply device 16 supplies power to the disk array device 12 based on a power output instruction from the power control server 14. The second power supply device 16 stops the power supply to the disk array device 12 based on the power supply stop instruction from the power control server 14.

  The host computer 2 is a personal computer or the like. The network 3 is a communication network such as a LAN or a telephone line.

  Next, the operation of the NAS system according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a flowchart schematically showing the operation of the NAS system according to the first embodiment of the present invention.

  When performing power control (power supply stop control), first, the power control server 14 transmits a shutdown instruction to the data control device 11 (step A1).

  Next, when receiving the shutdown instruction from the power supply control server 14, the data control device 11 executes shutdown (end processing of all programs being executed or scheduled to be executed) (step A2).

  Next, when the shutdown is completed, the data control device 11 links down (FC link down) with the disk array device 12 connected via the FC cable 13 (step A3). When the disk array device 12 is linked down, the disk array device 12 enters a standby state in which the power is turned off.

  Next, when detecting the FC link down with the data control device 11, the disk array device 12 determines whether all the FC ports with the data control device 11 are linked down (step A4). If all the FC ports are not linked down (NO in step A4), the process returns to step A4.

  When all the FC ports are linked down (YES in Step A4), the disk array device 12 determines whether N minutes (specified value) has elapsed since all the FC ports were linked down (Step A5). If N minutes have not elapsed (NO in step A5), the process returns to step A4.

  If N minutes have elapsed (YES in step A5), the disk array device 12 starts a shutdown process (step A6). During the shutdown process, if unwritten data remains in the cache, the disk array device 12 writes back the unwritten data to the hard disk drive.

  Next, the disk array device 12 determines whether the FC link with the data control device 11 connected via the FC cable 13 has been recovered (step A7).

  If even one FC link has been recovered (NO in step A7), the disk array device 12 interrupts the write back (step A8) and returns to step A4.

  If the FC link has not recovered (YES in step A7), the disk array device 12 waits for the completion of write back (step A9).

  When the write back is completed, the disk array device 12 again determines whether the FC link has been recovered at any of the FC ports with the data control device 11 (step A10). If at least one FC link is recovered (NO in step A10), the process returns to step A4. If the FC link has not recovered (YES in step A10), step A10 is repeated, and the disk array device 12 enters a standby state in which the power is turned off.

  Next, the power supply control server 14 issues a power supply stop instruction to the first power supply apparatus 15 when a predetermined time (a settable value) has elapsed since the shutdown instruction to the data control apparatus 11 has been issued (step A11). . Here, the certain time is the maximum time taken from the start to the completion of the shutdown of the data control device 11.

  Next, when the first power supply device 15 receives a power supply stop instruction from the power control server 14, the first power supply device 15 stops the power supply to the data control device 11. As a result, the data control device 11 is turned off (step A12).

  Next, the power supply control server 14 issues a power supply stop instruction to the second power supply apparatus 16 after a certain time (a settable value) has elapsed since the power supply stop instruction to the first power supply apparatus 15 has been issued. Perform (Step A13). The certain time here is the maximum time taken from the start to the completion of the shutdown of the disk array device 12.

  Next, when receiving the power supply stop instruction from the power control server 14, the second power supply device 16 stops the power supply to the disk array device 12. As a result, the disk array device 12 is powered off (step A14).

  According to the first embodiment, since the disk array device 12 performs the shutdown process itself when the FC link down with the data control device 11 is detected, the disk array device 12 has its own power control server. Do not need. Further, in the NAS device having the data control device 11 and the disk array device 12, it is possible to perform cooperation processing with one power control server 14 without using cooperation software.

It is the block diagram which showed typically the structure of the NAS system which concerns on Embodiment 1 of this invention. 3 is a flowchart schematically showing the operation of the NAS system according to the first embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 NAS system 1a NAS apparatus 2 Host computer 3 Network 11 Data control apparatus 12 Disk array apparatus 13 FC cable 14 Power supply control server 15 1st power supply apparatus 16 2nd power supply apparatus

Claims (7)

A disk array device that stores data and reads and writes data; and
A data control device for controlling input / output of data between the disk array device and the network;
A power control server for performing power control processing of the disk array device and the data control device;
With
The data control device, upon receiving a shutdown instruction from the power control server, executes a shutdown process for all programs being executed or scheduled to be executed, and links down with the disk array device,
The disk array device, by detecting a link down with the data control device, voluntarily executes a shutdown process of all programs currently being executed or scheduled to be executed,
The power control server performs control so that power supply to the data control device is stopped when a first time has elapsed since the shutdown instruction to the data control device is performed, and the first time The NAS system is controlled to stop the power supply to the disk array device when a second time elapses after the elapse of time. The disk array device is a RAID type storage device in which a plurality of hard disk drives are connected to one controller,
A plurality of ports related to the disk array device and the data control device are communicably connected via a fiber channel cable,
2. The NAS system according to claim 1, wherein the disk array device voluntarily executes the shutdown process related to itself by detecting a link down of all ports with the data control device.   3. The disk array device according to claim 1 or 2, wherein the disk array device voluntarily executes the shutdown processing related to itself when a predetermined time has elapsed after detecting a link down with the data control device. NAS system.   4. The disk array device according to claim 1, wherein, when unwritten data remains in the cache during the shutdown processing related to the disk array device, the disk array device performs a write-back of the unwritten data. 5. The NAS system according to one.   5. The NAS system according to claim 1, wherein the first time is a maximum time taken from the start to the completion of the shutdown processing related to the data control device.   6. The NAS system according to claim 4, wherein the second time is a maximum time taken from the start to the completion of the shutdown process including a write-back of the disk array device. A first power supply device for supplying power to the data control device;
A second power supply device for supplying power to the disk array device;
With
The power control server issues a first power supply stop instruction to the first power supply apparatus when the first time has elapsed since the shutdown instruction to the data control apparatus has been performed, and the first power A second power supply stop instruction is given to the second power supply device when the second time has elapsed since the supply stop instruction is issued;
The first power supply device stops power supply to the data control device based on the first power supply stop instruction from the power control server,
The said 2nd power supply apparatus stops the power supply to the said disk array apparatus based on the said 1st power supply stop instruction | indication from the said power supply control server, The any one of Claim 1 thru | or 6 characterized by the above-mentioned. The NAS system described in 1.

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