WO2010060290A1 - 存储系统及其节能方法 - Google Patents

存储系统及其节能方法 Download PDF

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Publication number
WO2010060290A1
WO2010060290A1 PCT/CN2009/071794 CN2009071794W WO2010060290A1 WO 2010060290 A1 WO2010060290 A1 WO 2010060290A1 CN 2009071794 W CN2009071794 W CN 2009071794W WO 2010060290 A1 WO2010060290 A1 WO 2010060290A1
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WO
WIPO (PCT)
Prior art keywords
power supply
control unit
sleep
power
interface
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PCT/CN2009/071794
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English (en)
French (fr)
Inventor
肖吉
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成都市华为赛门铁克科技有限公司
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Publication of WO2010060290A1 publication Critical patent/WO2010060290A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629—Configuration or reconfiguration of storage systems
    • G06F3/0634—Configuration or reconfiguration of storage systems by changing the state or mode of one or more devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0625—Power saving in storage systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0689—Disk arrays, e.g. RAID, JBOD
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present invention relates to a storage system technology, and in particular to a storage system and an energy saving method thereof. Background technique
  • Most existing storage systems use a single-power plane power supply without switching. That is, the storage system has only one power supply. All power output modules are output to the power supply through load balancing. All other modules in the storage system are powered by the power supply. . When the power is turned on, all modules in the storage system are in operation. When the power is turned off, the entire storage system is powered off. As shown in Figure 1, the mains (AC power) supplies power to the storage controller enclosure and storage expansion enclosure in the storage system. Only the main power supply is available in the storage system. When the main power is turned on, all modules, such as the storage control module in the storage control box, and the storage expansion modules 8 and 8 in the storage expansion box, 8, the disk array (Hard Disk, HD), etc.
  • AC power AC power
  • the power supply mode of the storage system cannot effectively save energy.
  • the power supply still needs to supply power to the entire system, and the hard disk idling, resulting in waste of power.
  • the external input power that is, the commercial power must be manually cut off.
  • An embodiment of the present invention provides a storage system and an energy saving method thereof to reduce system power consumption. Save energy.
  • a storage system including a control unit, one or more expansion units, and a power supply unit respectively supplying power to the control unit and the extension unit, where the power supply unit outputs a main power source and a backup unit.
  • a power source the power of the main power source is greater than the power of the standby power source;
  • the control unit is configured to send a sleep instruction to one or more expansion units when the system needs to sleep, to make the system enter a sleep mode, or issue a wake-up instruction to one or more expansion units when the system needs to exit the sleep, so that the system exits the sleep.
  • the backup power source is used to power some modules in the system when the system enters the sleep mode, and the main power source is used to supply power to all modules in the system when the system exits the sleep mode.
  • Another aspect of the present invention provides a storage system energy saving method, where the storage system includes a control unit, one or more expansion units, and a power supply unit respectively supplying power to the control unit and the extension unit, and the power supply unit
  • the output has a primary power source and a backup power source, and the method includes:
  • control unit When the system needs to enter the sleep mode, the control unit sends a sleep command to one or more expansion units;
  • control unit When the system needs to exit the sleep mode, the control unit sends a wake-up command to one or more extension units;
  • the expansion unit receiving the wake-up instruction and the control unit stop the backup power supply, and start the main power supply to supply power to all modules controlled by the user;
  • the power of the primary power source is greater than the power of the backup power source.
  • the storage system and the energy-saving method thereof can make the entire system or the extension units when the entire system or a certain extension unit has no service for a long time.
  • the power supply of the main power supply is cut off, and the backup power supply with small power supplies power to some key modules and control channels in the system, and the power supply of other non-critical modules and the hard disk is completely cut off, thereby reducing system power consumption and saving power.
  • the control channel can ensure that the system quickly controls other non-critical modules and the hard disk to exit the sleep mode, that is, the main power supply with higher power supplies power to all modules in the system, and the power supply of the standby power supply is cut off, so that the system enters.
  • FIG. 1 is a schematic diagram of a power supply structure of a prior art storage system
  • FIG. 2 is a schematic diagram of a power supply structure of a storage system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another power supply structure of a storage system according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of an implementation of an energy saving method of a storage system according to an embodiment of the present invention.
  • FIG. 5 is another implementation flowchart of a method for saving energy in a storage system according to an embodiment of the present invention. detailed description
  • FIG. 2 is a schematic diagram of a power supply structure of a storage system according to an embodiment of the present invention:
  • the storage system includes a control unit 201, one or more expansion units 202, and a power supply unit 203 and a power supply unit 204 for respectively supplying power to the control unit 201 and the expansion unit 202.
  • the control unit 201 is configured to process the storage system.
  • the extension unit 202 is configured to connect the hard disk and the control module to realize the expansion of the number of hard disks.
  • the control unit 201 and the power supply unit 203 for supplying power thereto are located in the storage control block 21, and the expansion unit 202 and the power supply unit 204 for supplying power thereto are located in the storage expansion frame 22.
  • only one storage expansion box is shown in the figure. In practical applications, there may be multiple storage expansion boxes.
  • the power supply unit 203 and the power supply unit 204 output a main power source and a backup power source.
  • the power of the main power source is greater than the power of the backup power source.
  • the standby power source is used when the system enters the sleep mode. Some modules are powered, and the main power source is used to supply power to all modules in the system when the system exits the sleep mode.
  • the control unit 201 has an optional device management interface 24, which is usually a network port.
  • the device management interface 24 is connected to the management server 20 through the user management network 23, and is configured to receive a sleep instruction or a wake-up command issued by the management server 20. .
  • the control unit 201 further has an internal management interface 25 for issuing sleep through an in-band protocol.
  • the instruction or wake-up instruction is given to one or more extension units, and the internal management interface 25 and the service interface may be the same interface.
  • the process of the storage system entering the sleep mode is as follows:
  • the control unit 201 When the user sends a sleep command to the control unit 201 through the management server 20 or the control unit 201 automatically sleeps according to the service analysis requirement, for example, when the control unit 201 analyzes that there is no host service access for more than 20 minutes, the control unit 201 first stops all services, and then The sleep command is sent to the extension unit 202 in one or more storage expansion boxes through the internal management interface 25, and the extension is not required if the expansion frame is not stored;
  • the extension unit 202 After the extension unit 202 receives the sleep notification, the power supply of all the hard disk ports and other non-critical modules is turned off, and only the power supply of the management module and the uplink and downlink management interfaces is reserved, and the power supply of the management module and the uplink and downlink management interfaces is switched to the standby power supply. Then, the main power is turned off. At this time, only the backup power output small power supply supplies power to the management module and the uplink and downlink management interfaces in the expansion box;
  • the expansion unit 202 enters the sleep state, but the management module and the uplink and downlink management interface are not closed, but are in a low power consumption state. Therefore, the control unit 201 communicates with the management module in each extension box through the uplink and downlink management interface. Obtain its status information;
  • the control unit 201 detects that all the extension units 202 that have received the sleep instruction have gone to sleep, the power supply of the non-critical module in the storage control box is turned off, only the power supply of the management module and the internal management interface is retained, and the management module and internal management are maintained.
  • the power supply of the interface is switched to the standby power supply, and then the main power supply is turned off, and the sleep mode is entered. At this time, only the backup power output small power supply supplies power to the management module and the internal management interface in the control box;
  • the process of the storage system exiting the sleep mode is as follows:
  • the control unit 201 When the user sends a wake-up command to the control unit 201 through the management server 20 or the control unit 201 automatically wakes up according to the analysis, the control unit 201 first turns on the main power in the storage control box, and then turns on the non-critical module in the storage control box, The power supply of the management module and the internal management interface is switched to the main power supply, and then the wake-up instruction is sent to the expansion unit 202 in the dormant storage expansion box through the internal management interface.
  • the extension unit 202 After the extension unit 202 receives the wake-up command, first turn on the main power to exit the sleep mode, and then turn on all the hard disk ports and other non-critical modules, and switch the power supply of the management module and the uplink and downlink management interfaces to the main power supply; After the control unit 201 detects that all the storage expansion frames are fully working, the service module can be loaded and the service is started.
  • the storage system of the embodiment of the present invention sends a sleep command to the control unit 201 or the control unit 201 to determine the sleep according to the service analysis, and the control unit 201 sends a sleep command to the one or more extension boxes through the internal management interface. Therefore, the system enters a partial sleep or full sleep mode, effectively reducing system power consumption and saving power. At the same time, the power supply of the internal control channel is reserved in the sleep mode. When the wakeup is required, the sleep port and the module can be quickly turned on to ensure that the system can work normally.
  • This kind of storage system can be applied to some backup services. Since the user's data is backed up regularly or manually, the backed up data is rarely used. Therefore, the system can save energy by means of timed sleep or manual sleep.
  • the storage system includes a control unit 301, one or more expansion units 302, and the control unit 301 and the extension unit 302, respectively.
  • the power supply unit 303 and the power supply unit 304 are configured to process the service and management of the storage system.
  • the expansion unit 302 is configured to connect the hard disk and the control module to implement expansion of the number of hard disks.
  • the control unit 301 and the power supply unit 303 for supplying power thereto are located in the storage control block 31, and the extension unit 302 and the power supply unit 304 for supplying power thereto are located in the storage expansion frame 32.
  • only one storage expansion box is shown in the figure. In practical applications, there may be multiple storage expansion boxes.
  • the power supply unit 303 and the power supply unit 304 output a main power source and a backup power source.
  • the power of the main power source is greater than the power of the backup power source.
  • the standby power source is used when the system enters the sleep mode. Some modules are powered, and the main power source is used to supply power to all modules in the system when the system exits the sleep mode.
  • the control unit 301 has an optional device management interface, which is usually a network port.
  • the device management interface is connected to the management server 30 through the user management network 33, and is configured to receive a sleep instruction or a wake-up command issued by the management server 30.
  • the control unit 301 further has an out-of-band control interface 35 for issuing a sleep command or a wake-up command to all extension units 302 through an out-of-band protocol, and the out-of-band control interface 35 may be a serial interface.
  • the control unit 301 also has a service interface 36 for transmitting service information.
  • the process of the storage system entering the sleep mode is as follows:
  • control unit 301 When the user sends a sleep command to the control unit 301 through the management server 30 or the control unit 301 automatically sleeps according to the service analysis requirement, the control unit 301 first stops all services, and then passes the sleep command to all through the out-of-band control interface 35.
  • the expansion unit 302 in the storage extension box does not need to be delivered if the expansion box is not stored;
  • the extension unit 302 When the extension unit 302 receives the sleep notification, the power supply of all the hard disk ports and other non-critical modules is turned off.
  • the difference from the embodiment shown in FIG. 2 is that the power supply of the uplink and downlink management interfaces can also be turned off, and only needs to be retained. Manage the power supply of the module, switch the power supply of the management module to the standby power supply, and then turn off the main power supply. At this time, only the backup power supply outputs the low-power power to the management module in the expansion box;
  • control unit 301 After the control unit 301 detects that all the extension units 302 have gone to sleep, the non-critical modules in the storage control box and the power supply of the service interface are turned off, and only the power supply of the management module and the out-of-band control interface is retained, and the management module and the out-of-band control are The power supply of the interface is switched to the standby power supply, and then the main power supply is turned off, and the sleep mode is entered. At this time, only the backup power supply output small power power supply to the management module and the out-of-band control interface 35 in the control box;
  • the process of the storage system exiting the sleep mode is as follows:
  • the control unit 301 When the user sends a wake-up command to the control unit 301 through the management server 30 or the control unit 301 automatically wakes up according to the analysis requirement, the control unit 301 first turns on the main power in the storage control box, and then opens the non-critical module and the service in the storage control box. The interface switches the power supply of the management module and the out-of-band control interface to the main power supply, and then transmits the wake-up command to the extension unit 302 of all the storage expansion boxes step by step through the out-of-band control interface 35.
  • the extension unit 302 After the extension unit 302 receives the wake-up command, first turn on the main power to exit the sleep mode, and then turn on all the hard disk ports, other non-critical modules, and the uplink and downlink management interfaces, that is, the power supply of all the hard disk ports, other non-critical modules, and the uplink and downlink management interfaces. Switch to the main power supply;
  • the control unit 301 detects that all the storage expansion frames are fully working, the service module can be loaded and the service is started.
  • the storage system of the embodiment of the present invention sends a sleep command to the control unit 301 or the control unit 301 to determine the sleep according to the service analysis, and the control unit 301 sends a sleep command to all the extension frames through the out-of-band control interface. Therefore, the system enters a full sleep mode, effectively reducing system power consumption and saving power. At the same time, the power supply of the out-of-band control channel is reserved in the sleep mode. When you need to wake up, you can quickly turn on the hibernation port and module to ensure that the system works properly.
  • This kind of storage system can be applied to some backup services. Since the user's data is backed up regularly or manually, the backed up data is rarely used. Therefore, the system can save energy by means of timed sleep or manual sleep.
  • FIG. 4 it is a flowchart for implementing an energy saving method of a storage system according to an embodiment of the present invention, which mainly includes the following steps:
  • Step 401 Receive an external command, such as a sleep command or a wake-up command sent by the user through the management server;
  • Step 402 it is determined whether the external instruction is a sleep instruction; if yes, step 403 is performed; if not, step 405 is performed;
  • Step 403 it is determined whether the system is currently in the sleep mode; if yes, step 408 is performed; if not, step 404 is performed;
  • Step 404 the system is put into the sleep mode, that is, the main power supply is stopped, and the standby power supply is started to supply power to some modules in the system; then step 408 is performed;
  • Step 405 determining whether the external command is a wake-up command; if yes, executing step 406; if not, executing step 408;
  • Step 406 it is determined whether the system is currently in the sleep mode; if yes, step 407 is performed; if not, step 408 is performed;
  • Step 407 the system is taken out of the sleep mode, that is, the standby power supply is stopped, and the main power is started to supply power to all modules in the system; then step 408 is performed;
  • the storage system enters or exits the sleep mode through an external command, such as a sleep command or a wake-up command issued by the management server.
  • an external command such as a sleep command or a wake-up command issued by the management server.
  • the backup power supply with less power is used to supply power to key modules in the system, such as the management module and the control interface, thereby reducing system power consumption and saving energy.
  • the control interface is a service interface or a serial interface; After exiting the sleep mode, all the modules and interfaces in the system are powered by the main power supply with high power, which ensures the normal operation of the system.
  • FIG. 5 it is another implementation flowchart of a method for saving energy in a storage system according to an embodiment of the present invention, which mainly includes the following steps:
  • Step 501 Determine, by using service analysis, a mode that the system needs to enter; for example, there is no host service access for more than 20 minutes;
  • Step 502 it is determined whether it is necessary to enter the sleep mode; if yes, step 503 is performed; if not, step 505 is performed;
  • Step 503 it is determined whether the system is currently in the sleep mode; if yes, step 508 is performed; if not, step 504 is performed;
  • Step 504 the system is put into the sleep mode, that is, the main power supply is stopped, and the standby power supply is started to supply power to some modules in the system; then step 508 is performed;
  • Step 505 it is determined whether it is necessary to exit the sleep mode; if yes, step 506 is performed; if no, step 508 is performed;
  • Step 506 it is determined whether the system is currently in the sleep mode; if yes, step 507 is performed; if not, step 508 is performed;
  • Step 507 the system is taken out of the sleep mode, that is, the standby power supply is stopped, and the main power is started to supply power to all modules in the system; then step 508 is performed;
  • Step 508 End.
  • the storage system determines whether the system needs to enter the sleep mode or exit the sleep mode through service analysis. After entering the sleep mode, the backup power supply with less power is used to supply power to key modules in the system, such as the management module and the control interface, thereby reducing system power consumption and saving energy.
  • the control interface is a service interface or a serial interface; After exiting the sleep mode, all the modules and interfaces in the system are powered by the main power supply with high power, which ensures the normal operation of the system.
  • the storage system can be completely or partially entered into the sleep mode by means of timing control or manual control, thereby effectively saving power and reducing system power consumption.

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Description

存储系统及其节能方法
本申请要求于 2008 年 11 月 3 日提交中国专利局、 申请号为 200810175512.6、 发明名称为"存储系统及其节能方法"的中国专利申请的优先 权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及存储系统技术， 具体涉及一种存储系统及其节能方法。 背景技术
随着信息技术的发展，各个领域对存储设备的需求越来越多，要求也越来 越高。
现有的大部分存储系统采用无开关的单电源平面供电方式，即存储系统只 有一路电源， 所有电源输出模块都通过负载均衡方式输出到该电源上，存储系 统内其他所有模块都由该电源供电。 当电源开启时，存储系统内所有模块都处 于工作状态。 当电源关闭时， 整个存储系统全部下电。 如图 1所示， 市电（AC 电源 )给存储系统中的存储控制框和存储扩展框供电，存储系统内只有主电源 供电。 当主电源开启时， 所有模块比如存储控制框中的存储控制模块八和^ 存储扩展框中的存储扩展模块八和：8、 磁盘阵列 （Hard Disk, HD )等都处于工 作状态， 这样即使在没有业务的情况下， 存储系统仍要给各模块供电， 造成能 源浪费。 当系统主电源关闭时， 该存储系统全部下电。 如果主电源突然断电， 则会导致系统内各模块立刻全部下电， 致使没有保存的数据丟失。 在图 1中， 只示出了一个存储扩展框， 当然， 实际存储系统中可以有多个存储扩展框， 也 可以没有存储扩展框。
显然，存储系统的这种供电方式不能有效节约能源， 当整个系统或系统中 某几个硬盘框长期没有业务的情况下， 电源仍要给整个系统供电， 硬盘空转， 造成电能浪费。 而且， 存储系统需要下电时， 必须由人工将外部输入电源即市 电切断。 发明内容
本发明实施例一方面提供一种存储系统及其节能方法， 以降低系统功耗, 节约电能。
本发明实施例另一方面提供一种存储系统， 包括控制单元、一个或多个扩 展单元及分别为所述控制单元和所述扩展单元供电的电源单元，所述电源单元 输出有主电源和备用电源， 所述主电源的功率大于所述备用电源的功率；
所述控制单元用于在系统需要休眠时下发休眠指令给一个或多个扩展单 元，使系统进入休眠模式， 或者在系统需要退出休眠时下发唤醒指令给一个或 多个扩展单元， 使系统退出休眠模式；
所述备用电源用于在系统进入休眠模式时， 为所述系统内的部分模块供 电， 所述主电源用于在系统退出休眠模式时， 为所述系统内的所有模块供电。
本发明实施例另一方面提供一种存储系统节能方法，所述存储系统包括控 制单元、一个或多个扩展单元及分别为所述控制单元和所述扩展单元供电的电 源单元， 所述电源单元输出有主电源和备用电源， 所述方法包括：
当系统需要进入休眠模式时，所述控制单元下发休眠指令给一个或多个扩 展单元；
收到所述休眠指令的扩展单元以及控制单元停止所述主电源供电，并启动 所述备用电源为自己控制的部分模块供电；
当系统需要退出休眠模式时，所述控制单元下发唤醒指令给一个或多个扩 展单元；
收到所述唤醒指令的扩展单元以及控制单元停止所述备用电源供电，并启 动所述主电源为自己控制的所有模块供电；
所述主电源的功率大于所述备用电源的功率。
由以上本发明实施例提供的技术方案可以看出，本发明实施例的存储系统 及其节能方法， 当整个系统或者某几个扩展单元长期没有业务的情况下， 可以 使整个系统或者这些扩展单元进入休眠模式， 即切断主电源的供电， 由功率小 的备用电源为系统内的一些关键模块及控制通道供电，其他非关键模块和硬盘 的电源全部切断，从而可以降低系统功耗，节约电能。 当系统退出休眠模式时， 通过控制通道可以保证系统迅速控制其他非关键模块和硬盘退出休眠模式，即 由功率较大的主电源为系统内的所有模块供电，切断备用电源的供电，使系统 进入工作状态。 附图说明
下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员 来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图 1是现有技术存储系统的供电结构示意图；
图 2是本发明实施例存储系统的一种供电结构示意图；
图 3是本发明实施例存储系统的另一种供电结构示意图；
图 4是本发明实施例存储系统节能方法的一种实现流程图；
图 5是本发明实施例存储系统节能方法的另一种实现流程图。 具体实施方式
为了使本技术领域的人员更好地理解本发明实施例的方案，下面结合附图 和实施方式对本发明实施例作进一步的详细说明。
如图 2所示， 是本发明实施例存储系统的一种供电结构示意图：
该存储系统包括控制单元 201、 一个或多个扩展单元 202及分别为所述控 制单元 201和所述扩展单元 202供电的电源单元 203、 电源单元 204, 所述控 制单元 201用于处理存储系统的业务和管理等，所述扩展单元 202用于连接硬 盘和控制模块， 实现硬盘数量的扩展。 如图所示， 所述控制单元 201和为其供 电的电源单元 203位于存储控制框 21中， 所述扩展单元 202和为其供电的电 源单元 204位于存储扩展框 22中。 为了清楚起见， 图中只示出了一个存储扩 展框， 在实际应用中， 可能有多个存储扩展框。
所述电源单元 203、 电源单元 204输出有主电源和备用电源， 所述主电源 的功率大于所述备用电源的功率， 所述备用电源用于在系统进入休眠模式时， 为所述系统内的部分模块供电， 所述主电源用于在系统退出休眠模式时， 为所 述系统内的所有模块供电。
所述控制单元 201具有可选的设备管理接口 24, 通常为网口； 所述设备 管理接口 24通过用户管理网络 23与管理服务器 20相连， 用于接收管理服务 器 20下发的休眠指令或唤醒指令。
所述控制单元 201还具有内部管理接口 25 , 用于通过带内协议下发休眠 指令或唤醒指令给一个或多个扩展单元， 所述内部管理接口 25和业务接口可 以是同一个接口。
所述存储系统进入休眠模式的流程如下：
当用户通过管理服务器 20下发休眠指令给控制单元 201或者控制单元 201 根据业务分析需要自动休眠时， 比如控制单元 201分析已经超过 20分钟没有 主机业务访问时， 控制单元 201 首先停止所有业务， 然后通过内部管理接口 25下发休眠指令给一个或多个存储扩展框中的扩展单元 202,如没有存储扩展 框则不需要下发；
当扩展单元 202接到休眠通知后，关闭所有硬盘端口以及其他非关键模块 的供电， 只保留管理模块和上下行管理接口的供电， 并将管理模块和上下行管 理接口的供电切换为备用电源， 然后关闭主电源， 此时只有备用电源输出小功 率电源给扩展框中的管理模块和上下行管理接口供电；
扩展单元 202虽然进入休眠状态，但是其管理模块和上下行管理接口并未 关闭， 而是处于低功耗工作状态， 因此控制单元 201通过上下行管理接口和各 扩展框中的管理模块通信， 可获得其状态信息；
当控制单元 201检测到所有收到休眠指令的扩展单元 202都进入休眠后， 关闭存储控制框中的非关键模块的供电，只保留管理模块和内部管理接口的供 电， 并将管理模块和内部管理接口的供电切换为备用电源， 然后关闭主电源， 进入休眠模式，此时只有备用电源输出小功率电源给控制框中的管理模块和内 部管理接口供电；
所述存储系统退出休眠模式的流程如下：
当用户通过管理服务器 20下发唤醒指令给控制单元 201或者控制单元 201 根据分析需要自动唤醒时，控制单元 201首先开启存储控制框内的主电源， 然 后开启存储控制框中的非关键模块，将管理模块和内部管理接口的供电切换为 主电源，然后通过内部管理接口下发唤醒指令给休眠的存储扩展框中的扩展单 元 202。
当扩展单元 202接到唤醒指令后， 首先开启主电源退出休眠模式， 然后开 启所有硬盘端口以及其他非关键模块，将管理模块和上下行管理接口的供电切 换为主电源； 当控制单元 201检测到所有存储扩展框都完全正常工作后，即可加载业务 模块并开启业务。
本发明实施例的存储系统， 通过管理服务器 20下发休眠指令给控制单元 201或者控制单元 201根据业务分析确定休眠， 并由控制单元 201通过内部管 理接口下发休眠指令给一个或多个扩展框，从而使系统进入部分休眠或完全休 眠模式， 有效地降低了系统功耗， 节约电能。 同时， 在休眠模式下保留内部控 制通道的供电， 在需要唤醒时， 可以迅速开启休眠端口和模块， 保证系统能够 正常工作。
这种存储系统可以应用于某些备份业务中，由于用户的数据是定时进行备 份或者人工进行备份的，备份完毕的数据基本很少使用， 因此可以通过定时休 眠或人工休眠的方式使系统节能。
如图 3所示， 是本发明实施例存储系统的另一种供电结构示意图： 该存储系统包括控制单元 301、 一个或多个扩展单元 302及分别为所述控 制单元 301和所述扩展单元 302供电的电源单元 303、 电源单元 304, 所述控 制单元 301用于处理存储系统的业务和管理等，所述扩展单元 302用于连接硬 盘和控制模块， 实现硬盘数量的扩展。 如图 3所示， 所述控制单元 301和为其 供电的电源单元 303位于存储控制框 31中， 所述扩展单元 302和为其供电的 电源单元 304位于存储扩展框 32中。 为了清楚起见， 图中只示出了一个存储 扩展框， 在实际应用中， 可能有多个存储扩展框。
所述电源单元 303、 电源单元 304输出有主电源和备用电源， 所述主电源 的功率大于所述备用电源的功率， 所述备用电源用于在系统进入休眠模式时， 为所述系统内的部分模块供电， 所述主电源用于在系统退出休眠模式时， 为所 述系统内的所有模块供电。
所述控制单元 301具有可选的设备管理接口，通常为网口； 所述设备管理 接口通过用户管理网络 33与管理服务器 30相连， 用于接收管理服务器 30下 发的休眠指令或唤醒指令。
所述控制单元 301还具有带外控制接口 35 , 用于通过带外协议下发休眠 指令或唤醒指令给所有扩展单元 302, 所述带外控制接口 35可以是串行接口。
所述控制单元 301还具有业务接口 36, 用于传输业务信息。 所述存储系统进入休眠模式的流程如下：
当用户通过管理服务器 30下发休眠指令给控制单元 301或者控制单元 301 根据业务分析需要自动休眠时，控制单元 301首先停止所有业务， 然后通过带 外控制接口 35将休眠指令逐级地传给所有存储扩展框中的扩展单元 302, 如 没有存储扩展框则不需要下发；
当扩展单元 302接到休眠通知后，关闭所有硬盘端口以及其他非关键模块 的供电， 与图 2所示实施例不同的是， 此时， 也可以关闭上下行管理接口的供 电， 而只需保留管理模块的供电， 并将管理模块的供电切换为备用电源， 然后 关闭主电源， 此时只有备用电源输出小功率电源给扩展框中的管理模块；
当控制单元 301检测到所有扩展单元 302都进入休眠后，关闭存储控制框 中的非关键模块以及业务接口的供电， 只保留管理模块和带外控制接口的供 电， 并将管理模块和带外控制接口的供电切换为备用电源， 然后关闭主电源， 进入休眠模式，此时只有备用电源输出小功率电源给控制框中的管理模块和带 外控制接口 35供电；
所述存储系统退出休眠模式的流程如下：
当用户通过管理服务器 30下发唤醒指令给控制单元 301或者控制单元 301 根据分析需要自动唤醒时，控制单元 301首先开启存储控制框内的主电源， 然 后开启存储控制框中的非关键模块以及业务接口，并将管理模块及带外控制接 口的供电切换为主电源， 然后通过带外控制接口 35将唤醒指令逐级地传给所 有存储扩展框中的扩展单元 302。
当扩展单元 302接到唤醒指令后， 首先开启主电源退出休眠模式， 然后开 启所有硬盘端口、 其他非关键模块及上下行管理接口， 即将所有硬盘端口、 其 他非关键模块及上下行管理接口的供电切换为主电源；
当控制单元 301检测到所有存储扩展框都完全正常工作后，即可加载业务 模块并开启业务。
本发明实施例的存储系统， 通过管理服务器 30下发休眠指令给控制单元 301或者控制单元 301根据业务分析确定休眠， 并由控制单元 301通过带外控 制接口逐级下发休眠指令给所有扩展框，从而使系统进入完全休眠模式，有效 地降低了系统功耗，节约电能。同时，在休眠模式下保留带外控制通道的供电， 在需要唤醒时， 可以迅速开启休眠端口和模块， 保证系统能够正常工作。
这种存储系统可以应用于某些备份业务中，由于用户的数据是定时进行备 份或者人工进行备份的，备份完毕的数据基本很少使用， 因此可以通过定时休 眠或人工休眠的方式使系统节能。
参照图 4, 是本发明实施例存储系统节能方法的一种实现流程图， 主要包 括以下步骤：
步骤 401 , 接收外部指令， 比如用户通过管理服务器下发的休眠指令或唤 醒指令；
步骤 402, 判断所述外部指令是否为休眠指令； 如果是， 则执行步骤 403; 如果否， 则执行步骤 405;
步骤 403 , 判断系统当前是否为休眠模式； 如果是， 则执行步骤 408; 如 果否， 则执行步骤 404;
步骤 404, 使系统进入休眠模式， 即停止所述主电源供电， 并启动所述备 用电源为所述系统内的部分模块供电； 然后执行步骤 408;
具体过程可参照前面本发明实施例存储系统中的描述， 在此不再赘述； 步骤 405 , 判断所述外部指令是否为唤醒指令； 如果是， 则执行步骤 406; 如果否， 则执行步骤 408;
步骤 406, 判断系统当前是否为休眠模式； 如果是， 则执行步骤 407; 如 果否， 则执行步骤 408;
步骤 407, 使系统退出休眠模式， 即停止所述备用电源供电， 并启动所述 主电源为所述系统内的所有模块供电； 然后执行步骤 408;
具体过程可参照前面本发明实施例存储系统中的描述， 在此不再赘述； 步骤 408, 结束。
在该实施例中， 所述存储系统通过外部指令进入或退出休眠模式， 比如通 过管理服务器下发的休眠指令或唤醒指令。在进入休眠模式后， 由功率较小的 备用电源为系统内的关键模块， 比如管理模块及控制接口供电，从而可以降低 系统功耗， 节约能源， 所述控制接口为业务接口或串行接口； 在退出休眠模式 后， 由功率较大的主电源为系统内的所有模块和接口供电，保证了系统能够正 常工作。 参照图 5 , 是本发明实施例存储系统节能方法的另一种实现流程图， 主要 包括以下步骤：
步骤 501 , 通过业务分析确定系统需要进入的模式； 比如， 当前已经超过 20分钟没有主机业务访问；
步骤 502, 判断是否需要进入休眠模式； 如果是， 则执行步骤 503; 如果 否， 则执行步骤 505;
步骤 503 , 判断系统当前是否为休眠模式； 如果是， 则执行步骤 508; 如 果否， 则执行步骤 504;
步骤 504, 使系统进入休眠模式， 即停止所述主电源供电， 并启动所述备 用电源为所述系统内的部分模块供电； 然后执行步骤 508;
具体过程可参照前面本发明实施例存储系统中的描述， 在此不再赘述； 步骤 505 , 判断是否需要退出休眠模式； 如果是， 则执行步骤 506; 如果 否， 则执行步骤 508;
步骤 506, 判断系统当前是否为休眠模式； 如果是， 则执行步骤 507; 如 果否， 则执行步骤 508;
步骤 507, 使系统退出休眠模式， 即停止所述备用电源供电， 并启动所述 主电源为所述系统内的所有模块供电； 然后执行步骤 508；
具体过程可参照前面本发明实施例存储系统中的描述， 在此不再赘述； 步骤 508, 结束。
在该实施例中，所述存储系统通过业务分析确定系统需要进入休眠模式还 是退出休眠模式。在进入休眠模式后， 由功率较小的备用电源为系统内的关键 模块， 比如管理模块及控制接口供电， 从而可以降低系统功耗， 节约能源， 所 述控制接口为业务接口或串行接口； 在退出休眠模式后， 由功率较大的主电源 为系统内的所有模块和接口供电， 保证了系统能够正常工作。
利用本发明实施例的存储系统节能方法，可以通过定时控制或人工控制的 方式使存储系统整体或部分进入休眠模式， 有效地节省电能， 降低系统功耗。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件来完成，所述的程序可以存储于一计算机可 读取存储介质中， 所述的存储介质， 如： ROM/RAM、 磁碟、 光盘等。 以上对本发明实施例进行了详细介绍，本文中应用了具体实施方式对本发明进 行了阐述， 以上实施例的说明只是用于帮助理解本发明的系统及方法； 同时， 对于本领域的一般技术人员，依据本发明的思想， 在具体实施方式及应用范围 上均会有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种存储系统， 包括控制单元、 一个或多个扩展单元及分别为所述控 制单元和所述扩展单元供电的电源单元； 其特征在于：
所述控制单元用于在系统需要休眠时下发休眠指令给一个或多个扩展单 元，使系统进入休眠模式， 或者在系统需要退出休眠时下发唤醒指令给一个或 多个扩展单元， 使系统退出休眠模式；
所述电源单元输出有主电源和备用电源，所述主电源的功率大于所述备用 电源的功率， 所述备用电源用于在系统进入休眠模式时， 为所述系统内的部分 模块供电， 所述主电源用于在系统退出休眠模式时， 为所述系统内的所有模块 供电。
2、 根据权利要求 1所述的存储系统， 其特征在于， 所述控制单元包括设 备管理接口， 所述设备管理接口通过用户管理网络与管理服务器相连， 用于接 收所述管理服务器下发的休眠指令或唤醒指令。
3、 根据权利要求 2所述的存储系统， 其特征在于， 所述控制单元还包括 内部管理接口，用于通过带内协议下发休眠指令或唤醒指令给一个或多个扩展 单元。
4、 根据权利要求 3所述的存储系统， 其特征在于， 所述内部管理接口为 业务接口。
5、 根据权利要求 2所述的存储系统， 其特征在于， 所述控制单元还包括 带外控制接口， 用于通过带外协议下发休眠指令或唤醒指令给所有扩展单元。
6、 根据权利要求 5所述的存储系统， 其特征在于， 所述带外控制接口为 串行接口。
7、 一种存储系统节能方法， 所述存储系统包括控制单元、 一个或多个扩 展单元及分别为所述控制单元和所述扩展单元供电的电源单元，所述电源单元 输出有主电源和备用电源， 所述主电源的功率大于所述备用电源的功率， 其特 征在于， 所述方法包括：
当系统需要进入休眠模式时，所述控制单元下发休眠指令给一个或多个扩 展单元；
收到所述休眠指令的扩展单元以及控制单元停止所述主电源供电，并启动 所述备用电源为自己控制的部分模块供电；
当系统需要退出休眠模式时，所述控制单元下发唤醒指令给一个或多个扩 展单元；
收到所述唤醒指令的扩展单元以及控制单元停止所述备用电源供电，并启 动所述主电源为自己控制的所有模块供电。
8、 根据权利要求 7所述的方法， 其特征在于， 还包括： 所述控制单元通 过管理服务器下发的休眠指令或通过业务分析确定系统需要进入休眠模式。
9、 根据权利要求 7所述的方法， 其特征在于， 还包括：
所述控制单元通过管理服务器下发的唤醒指令或通过业务分析确定系统 需要退出休眠模式。
10、 根据权利要求 7所述的方法， 其特征在于， 所述控制单元以及所述收 到所述休眠指令的扩展单元停止所述主电源供电，并启动所述备用电源为自己 控制的部分模块供电包括：
所述控制单元停止所有业务，然后通过控制接口下发休眠指令给一个或多 个扩展单元；
扩展单元收到休眠指令后，将其内部管理模块和上下行管理接口的供电切 换为备用电源， 然后关闭主电源， 进入休眠模式；
当所有收到休眠指令的扩展单元都进入休眠模式后，所述控制单元将其内 部管理模块和控制接口的供电切换为备用电源， 然后关闭主电源。
11、 根据权利要求 7所述的方法， 其特征在于， 所述控制单元以及所述收 到所述唤醒指令的扩展单元停止所述备用电源供电，并启动所述主电源为所述 系统内的所有模块供电包括：
所述控制单元开启其内部的主电源，并将其内部管理模块和控制接口的供 电切换为主电源， 然后通过控制接口下发唤醒指令给一个或多个扩展单元； 扩展单元收到唤醒指令后， 开启其内部的主电源， 并将其内部管理模块和 上下行管理接口的供电切换为主用电源， 退出休眠模式；
当所有收到唤醒指令的扩展单元都退出休 0 莫式后，所述控制单元加载业务。
12、 根据权利要求 10或 11所述的方法， 其特征在于， 所述控制接口为业 务接口或串行接口。
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