zoin0000

1. 勤做 備份，喺最安心！

2. 宜家 HDD 密度高左，對於 摩達，讀寫頭嘅 耐用性要求高左。 同時間，我覺 ...
terry_beginner 發表於 2017-7-17 22:57

1. 正確
2. 唔覺同之前一樣,HDD本身需求無降低反而高左
3. 家裡的電線換唔換係無關係,反而火牛穩定性才是比較好,震動，共振問題本身HDD有抗震動，共振唔係十幾年前
4. 呢個無意義,PCB燒好多時唔係塵,係品質問題,機箱通風散熱好最多只會有2-3度差距

C-Leung

買過幾隻t牌3t for dvr/nas都冇事wor

pc1668

1. 正確
2. 唔覺同之前一樣,HDD本身需求無降低反而高左
3. 家裡的電線換唔換係無關係,反而火牛穩定性才是比較好,震動，共振問題本身HDD有抗震動，共振唔係十幾年前
4. 呢個無意義,PCB燒好多時唔係塵,係品質問題,機箱通風散熱好最多只會有2-3度差距
zoin0000 發表於 2017-7-18 10:41

Something about "震動，共振問題本身HDD有抗震動"

There was a story about Toshiba DT01 3TB that was died in 5 mins after reinstalling into a NAS.
- I've two T DT01 3TB running in a qnap 251C (2-bay, Basic mode) for nearly 2 yrs w/o any problem.
- Months ago, bought a HGST NAS 4TB.
- Removed vol1 and installed the new hdd.  vol2 (an existing T 3TB) remained untouched (螺絲都冇拔).  Then started up the NAS
- The new hdd was noisy (expected) and the vibration level was a bit 'high'
- After a few mins, there was a weird hdd movement sound (quite loud).  And it was suspected that the sound was came from the T 3TB
- SMART error was then prompted from QTS, the T 3TB got abnormal seek error values ... it was then 'died'

Finding(s)
- HGST NAS's vibration level was rather high.  However, it has "抗震動".  
- T DT01 does not possess "抗震動" (as far as I know)
- It was 'almost' confirmed that T DT01 was unable to handle "共振" if its neighbor's vibration level was high.
- HGST NAS "震死左" T DT01 ... in 5 mins  
- Luckily the T 3TB was still under warranty.  Upgraded to T MG04 4TB during RMA thereafter
- T MG04 has "抗震動" and it works fine with HGST NAS

ps.  As I wanted to migrate to Synology, the 251C was sold thereafter.

terry_beginner

1. 正確
2. 唔覺同之前一樣,HDD本身需求無降低反而高左
3. 家裡的電線換唔換係無關係,反而火牛穩定性才是 ...
zoin0000 發表於 2017-7-18 10:41

關于 第四，我認同 PCB 品質是最關鍵。

作為消費者，我只能盡力做好自己本份。例如買市面上，評價最好的產品。之後在使用上，自己多加小心，例如 除塵，減低溫度，盡量讓 硬件在 比較佳的狀況下運作。

terry_beginner

所有唔同款既 HD 隻 motor 都係咁轉，耐用性要求唔會突然高左吧？
tomchen 發表於 2017-7-18 09:15

HDD 的 摩達的發展，我不是100%肯定。但密度的提升，對於 讀寫頭 和 磁碟物料嘅要求是高左好多。

而一個 摩達能 長時間 一直 保持 7200 rpm ，正負可能得 少過 1%，否則讀寫頭 讀取的位置 就有偏差，本身就是一個好大的挑戰。

林洋2

一定係東芝,之前貪平買左好多,點知過保就出問題

pc1668

一定係東芝,之前貪平買左好多,點知過保就出問題
林洋2 發表於 2017-7-18 13:39

T DT01 3tb is fragile.  We have to 'handle' it very carefully.

zoin0000

Something about "震動，共振問題本身HDD有抗震動"

There was a story about Toshiba DT01 3TB that was ...
pc1668 發表於 2017-7-18 12:33

抗震動HD本身有只係級數問題,官方Mean有寫不過我估多數人無睇

Server級想對抗震動摩打晶片管理做得好好多,所以成日都話唔差好多買Serve級

我PC放地下,之前WD Black同Blue試過一腳整死左,後來用RE4抄file時都未試過震死

pc1668

抗震動HD本身有只係級數問題,官方Mean有寫不過我估多數人無睇

Server級想對抗震動摩打晶片管理做得好好 ...
zoin0000 發表於 2017-7-18 13:58

right, and I will go for enterprise models even for desktop pcs

terry_beginner

抗震動HD本身有只係級數問題,官方Mean有寫不過我估多數人無睇

Server級想對抗震動摩打晶片管理做得好好 ...
zoin0000 發表於 2017-7-18 13:58

這些微細而重要嘅野，99%的普通消費者會忽略。而在 consumer grade 嘅產品嘅 spec sheet，都會省略。