題 為什麼在HGST 7K1000硬盤上停用磁頭停車會導致每秒讀取/寫入聲音(有時甚至更多)?


當。。。的時候 APM 使用其中任何一個將驅動器的值設置為254或255(禁用磁頭停放) hdparm的 要么 HDDScan 實用程序,我的HGST 7K1000 HTS721010A9E630硬盤偶爾會發出正常的靜音活動聲,但是周期性的短暫爆發持續(很難說......)從0.1到0.5秒,每1-3秒發生一次。這個問題在內容中有詳細描述 這是另一個問題。如果啟用了頭部停車(APM值為128),則驅動器在訪問後會發出咔嗒聲,並且在下次訪問驅動器之前不會再聽到其他聲音。

我不知道是否使用更改APM值 日立特色工具 會給出同樣的問題,但我還不願意使用它,直到我弄清楚使用它是否會使保修失效。我問了一個關於保修的問題 在這裡超級用戶 並在 WD社區網站。還沒有答案。


3
2017-12-02 02:00


起源




答案:


經過幾個小時的實驗,思考和閱讀,我想出了一個答案。我有一個相當瘋狂,但似乎合理的假設,即HGST 7K1000硬盤驅動器的製造商有點懶,而不是實施禁用頭停車,他們讓驅動器做一些活動(讀一些東西,我猜),以保持它是活動的,因此不活動的計時器永遠不會達到某一點,因此驅動器每秒鐘都會發出活動聲音。所以,換句話說,我的猜測是他們更容易讓計時器每秒創建一次活動,而不是更改停放頭部的計時器。

另外還有一個不那麼瘋狂的解釋,但仍然有點奇怪:將APM值設置為254或禁用APM會使驅動器進入活動空閒模式,並且假設驅動器每秒都處於正常狀態(或設計為這樣)主動空閒模式。好吧,我猜,驅動器不會變得​​懶惰並且在工作中睡著了。

以下是我使用驅動器測試的一些APM值:

    HEX     DEC     RESULT
    ==============================================================
    "01h - 7Fh ... The deepest Power Saving mode is Standby"

    01      1       parked immediately or almost immediately
    7F      127     not tested

    "80h - BFh ... The deepest Power Saving mode is Low power Idle"

    80      128     parked immediately or almost immediately
    96      150     parked immediately or almost immediately
    9B      155     parked immediately or almost immediately

    9C      156     parked in about 3 sec after several read/write sounds
    9D      157     parked in about 1 minute
    9E      158     not tested
    9F      159     parked in about 1 minute
    A0      160     parked in about 1 minute
    A1      161     parked in about 1 minute
    A2      162     parked in about 1 minute
    A3      163     not tested
    A4      164     not tested
    A5      165     parked in about 1 minute

    A6      166     parked immediately or almost immediately
    A7      167     parked immediately or almost immediately
    A9      169     parked immediately or almost immediately
    AA      170     parked immediately or almost immediately
    B4      180     parked immediately or almost immediately
    BE      190     parked immediately or almost immediately
    BF      191     parked immediately or almost immediately

    "C0h - FEh ... The deepest Power Saving mode is Active Idle"

    C0      192     read/write sound approx. each second
    C4      196     read/write sound approx. each second
    C8      200     read/write sound approx. each second
    E0      224     read/write sound approx. each second
    FE      254     read/write sound approx. each second

“高級電源管理級別包含離散頻段,詳細介紹了設置功能命令部分。”

“當功能寄存器為85h(=禁用高級電源管理)時,最深省電模式變為活動空閒。”

我提供了引文 HGST Travelstar 7K1000規格 在引號中。


0
2017-12-02 05:15