[心得] 資料救援難度分享
看板Storage_Zone (儲存裝置)作者diji777 (世界流浪漢)時間1周前 (2026/04/08 22:18)推噓23(23推 0噓 75→)留言98則, 23人參與討論串1/3 (看更多)
總算是幫視障者家長協會處理完一些資料救援的事, 在此分想一些資料救援難度
中間也用了不少料板, 整理一下心得
HDD篇:
1) Seagate Barracuda 2017之後版本 (包含CMR, SMR, He)
LSI 主控, 沒有加密, 但是Barracuda有MTC cache, 要趁MTC寫入一般磁區前撈
如果MTC已經寫入其他磁區, 那資料是保不住
P.s 避開ST1000DM010, datasheet上面寫磁頭load cycle只有50K
如果不是會操作 seachest的話在過保後爆掉機率很高
https://www.seagate.com/content/dam/seagate/en/content-fragments/products/
datasheets/barracuda-3-5/3-5-barracudaDS2131-1-2302-AMER-en_US.pdf
2017-2020的 Barracuda SMR 有帶TRIM, OS如果操作TRIM指令也是保不住資料
2021之後的 Barracuda SMR TRIM寫在韌體內, 如果不操作seachest disableapm
可以趁休眠期間撈到完整磁區資料
Barracuda HE (10T以上) 有MTC cache, 如果誤刪或是分割表損毀基本沒救
補充說明, Seagate 氦氣碟可用smartmontools看真實通電時間
如果是清零碟也無法更改, 但只限氦氣碟, 8T(含)以下空氣碟一樣是重災區
中文影片參考資料: https://youtu.be/fajJCD1eo5o?si=nVUdsZV4L7xmFyQg
P.S. Skyhawk跟Ironwolf 都能支援RAID指令跟ATA Streaming/ SHM
兩者盤體完全相同, 只有寫入策略不同, 不要說監控碟blah blah...
2) WD10EZEX 2016- (含部份型號avago主控氦氣碟) CMR
Avago主控有加密, 韌體區一定要完整備份出來, 備不出來就也是完蛋
目前PC3000還沒更新到Avago主控, 如果是Marvell主控問題簡單很多
3) WD帶TRIM, CMR或SMR (如WD10SPZX)
Avago主控或是Marvell主控, 看運氣, 同理未做TRIM可以保住資料
在Windows 8-10底下不會主動觸發TRIM, 除非是手動, 千萬不要手殘去最佳化
SSD篇:
1) WD Blue SSD
Marvell 88ss1074版本, 搭配的顆粒如果是有冷資料問題 (包含nvme)
冷資料不太可怕, 只是要花的是時間, 可能需要用5-15K的速度慢慢讀出來
主控未加密 (NVME未知, 如果是Marvell骨就是未加密)
2) WD Blue SA510
主控看起來也是Avago代工, 內建有SRAM (所以會比綠標效能好太多原因)
補充說明: SA510的SRAM是能映射FTL表, 與Phison S11做為cache不同
主控跟顆粒有綁定, 如果主控掛了基本上無解, 讀顆粒出來無法解密
如果是韌體問題無法重建那也是無解
3) MX500/BX500 SMI主控系
主控顆粒未加密, 可以刷各版韌體, 也是清零重災區
注意的是SM2258H可以不帶Dram開卡成Dramless!!!
4) intel 545s or SMI主控系
主控顆粒軔體互相加密, 出事就QAQ
5) Maxio 1102 公版系
救援難度簡單, 但是如果要用在RAID/NAS要注意底下的狀況
Maxio 公版韌體 SMART 如果能看到 A8值跟BB值, 這兩個是相同的
會被RAID or NAS警告
以上初稿給各位選購硬碟跟資料救援參考
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※ 編輯: diji777 (112.104.191.115 臺灣), 04/08/2026 22:32:41
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※ 編輯: diji777 (112.104.191.115 臺灣), 04/14/2026 03:17:55
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