【摘要】：對數(shù)據(jù)中心服務(wù)器的損壞情況進行跟蹤統(tǒng)計發(fā)現(xiàn)：溫度在很大程度上影響硬盤的壽命。針對數(shù)據(jù)中心能耗較大的問題，常用的節(jié)能策略是盡可能將負載集中到少數(shù)的硬盤，讓更多的硬盤處于休眠狀態(tài)，減少高速旋轉(zhuǎn)引起的能耗。但是這種策略會導(dǎo)致高負載硬盤始終處于高溫工作狀態(tài)，引起硬盤故障率急劇上升。因此，研究溫度屬性對存儲設(shè)備可靠性的影響具有一定的研究意義。 針對硬盤的可靠性問題，提出一種通過對存儲設(shè)備溫度進行控制來解決存儲設(shè)備可靠性問題的方法。詳細分析了對存儲系統(tǒng)溫度進行控制所需要實現(xiàn)的具體功能和技術(shù)要點。針對存儲系統(tǒng)局部過熱的問題，引入溫度預(yù)測和反饋機制，有效提高存儲設(shè)備的可靠性。同時還使用了阿列紐斯模型來計算當前預(yù)測溫度下硬盤故障率加速因子和預(yù)測后采取關(guān)盤措施產(chǎn)生的故障率加速因子，根據(jù)這兩個故障率加速因子的大小來確定關(guān)閉硬盤策略，從而達到溫度限制和節(jié)能的效果。對于系統(tǒng)中的寫操作，使用寫離線處理技術(shù)，先將寫操作寫入緩存，再在合適的時候?qū)懖僮鞲碌剿械挠脖P，從而有效的減少了寫請求對于溫度控制策略和節(jié)能措施的影響。 測試結(jié)果顯示，溫度控制系統(tǒng)可以較好的控制存儲設(shè)備的溫度，減少硬盤啟停頻率，有效降低存儲設(shè)備的故障率，保護存儲設(shè)備。
[Abstract]:According to the data center server damage, it is found that the temperature affects the hard disk life to a great extent. Aiming at the problem of large energy consumption in data center, the commonly used energy saving strategy is to concentrate the load on a few hard disks as much as possible, so that more hard disks can be kept dormant, and the energy consumption caused by high speed rotation can be reduced. However, this strategy will cause the high-load hard disk to work at high temperature all the time, causing the hard disk failure rate to rise sharply. Therefore, it is significant to study the effect of temperature attribute on storage device reliability. Aiming at the reliability problem of hard disk, this paper presents a method to solve the reliability problem of storage device by controlling the temperature of storage device. Detailed analysis of the storage system temperature control needs to achieve the specific functions and technical points. Aiming at the problem of local overheating of storage system, temperature prediction and feedback mechanism are introduced to effectively improve the reliability of storage devices. At the same time, the Alenius model is used to calculate the acceleration factor of hard disk failure rate at the current predicted temperature and the failure rate acceleration factor caused by the measures taken to close the disk after the prediction. According to the magnitude of these two failure rate acceleration factors, the hard disk closure strategy is determined. Thus, the effect of temperature limitation and energy saving is achieved. For the write operation in the system, the write off line processing technique is used, the write operation is written to the cache first, and then the write operation is updated to all hard disks when appropriate. Therefore, the effect of write request on temperature control strategy and energy saving measures is reduced effectively. The test results show that the temperature control system can better control the temperature of storage devices, reduce the frequency of hard disk startup and stop, effectively reduce the failure rate of storage devices, and protect storage devices.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP333.35

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