|
||
|
Elite Member
  加入日期: Apr 2002
文章: 8,545
|
引用:
MO 5"25 已經殺到5.2GB跟9.1GB了........ but.........這些玩意已經不是平常人在玩的了...... 而且根據原祖Fujitsu的規劃，MO的接班人應屬ASMO.... |
||||||||
2005-06-10, 11:55 PM
#141
|
|
|
Elite Member
加入日期: Dec 2001 您的住址: Cape Crozier
文章: 6,122
|
引用:
根據 "廠商在網頁上提供的資料"，RAM 的保存年限還比 R 遜。 不重複貼文了，請參考之前的討論串： http://forum.pcdvd.com.tw/showthrea...#post1077574401 染料怕變質 (R)，但相變材料也會怕改變結晶的狀態，請參考下文： 4. How Long Can You Store CDs and DVDs and Use Them Again? http://www.clir.org/pubs/reports/pub121/sec4.html (節錄部分文章) 4.3 CD-RW, DVD-RW, DVD+RW, DVD-RAM Discs RW and RAM discs are generally not considered for long-term or archival use, and life expectancy tests are seldom done for this medium. Rewritable discs use a phase-changing metal alloy film for recording data and aluminum for the reflective layer. The alloy film is not as stable as the dye used in R discs because the material normally degrades at a faster rate... (該金屬層不如染料穩定，因為材料品質降低的速度較快) The phase-changing film is affected primarily by heat, but ultraviolet (UV) light may also be a factor in the aging process. (相變材質主要會被"熱"影響，但 "紫外光"也會) The combination of high temperature and UV light may further accelerate the aging process. (高溫 + 紫外光會加速老化過程) The combination of high temperatures and high relative humidity will also most likely accelerate the aging process, just as it does with the organic dye used in R discs. (和 R 一樣，高溫 + 高濕度也會加速老化)... The data on the phase-changing metal alloy film layer can be erased and rewritten to a limited number of times (about 1,000 times for RW discs and about 100,000 times for RAM discs). This rewriting does, however, affect disc life expectancy; RW or RAM discs archived after the first recording should have a longer life expectancy than those that have undergone several erase-recording cycles. (覆寫會影響預期的壽命，寫一次比重複寫入幾次後的預期壽命高) Given the normal degradation rate alone, the life expectancy for RW and RAM discs will be less than that of R discs. (依照正常的速度，RW 與 RAM 的預期壽命較 R 低) Add to that multiple rewrites, and the life expectancy can be even less. (重複寫入後，預期壽命更低) 重要資料，不要僅依賴單片儲存媒介。 |
|||
|
2005-11-16, 10:18 AM
#142
|
|
|
Regular Member
 加入日期: Feb 2004 您的住址: taipei
文章: 92
|
同樣的DVD版面換了染料結果大不同
一直都是用錸德製面板標示 TRAXDATA 的 4X DVD+R 來備份資料
最近檢查發現2004年7月以前染料是RICOHJPN R01，7月以後改為RITEK R02 結果是2003年10月至2004年7月所燒的片子全部頭好壯壯 而2004年7月以後的片子不是PIE爆高就是PIF在不同位置出現大紅山峰 造成資料讀取錯誤產生，就跟網上其他大大所提的CIA自爆片狀況一樣 所以最近反而是急著備份一年以內的片子 |
|
2005-11-18, 01:03 PM
#143
|
|
|
Major Member
 加入日期: Mar 2002
文章: 126
|
有點擔心了
本來以為改用RAM就可高枕無憂 看來只好再多買一些MO片 我的MO640還除不了役阿 引用:
|
|
|
2005-11-19, 09:20 AM
#144
|
|
|
Elite Member
加入日期: Apr 2002
文章: 8,545
|
|
|
2005-11-19, 12:45 PM
#145
|
|
|
New Member
加入日期: Sep 2003
文章: 7
|
其實以台灣氣候來說,偏潮濕,在保存資料上有了相當阻礙
我覺得不管哪一種儲存方式 最好是定期檢查 或是定期重新備份 結論就是 "縱時的定期重新備份+橫時的多份備份" |
|
2005-11-21, 08:30 PM
#146
|
|
|
Major Member
加入日期: Mar 2002
文章: 126
|
引用:
哇!這太高檔了!! 不過寫一片的時間大概超久的吧! |
|
|
2005-11-21, 10:59 PM
#147
|
|
|
Major Member
加入日期: Mar 2002
文章: 126
|
引用:
MO真的是目前讓我最放心的 8年前備份的十幾片現在全部都沒問題. 有一片還亂丟掉到書櫃後面地上 大掃除時掃出來的 DATA也是OK 真希望DVD-RAM能取代MO (可惜目前官方數據看起來似乎保存性還差蠻多的) |
|
|
2005-11-21, 11:03 PM
#148
|
|
