話說桌面環境跟伺服器環境的需求差很多喔...
伺服器通常把幾個要跑的Service Load到記憶體後 剩下的就是拉不特定變數資料時才會讀硬碟(現在甚至有資料庫標榜整個放在記憶體上 這樣就更少讀硬碟了) 桌面環境則是把OS Load進去後 常常要開些不特定的服務 但是資料大底就是那些 變化很小
因此...
桌面環境資料重複性不高而連續 但是很容易遇到大檔
伺服器環境剛好顛倒-資料重複性高 可是不連續 大檔也很少

所以...
伺服器環境下 CPU的Cache要大要多 硬碟轉速要快 但是硬碟的Buffer不用大(因為不連續) 桌面環境反之

那...SSD為何要做Buffer上去呢?
因為SSD沒有磁頭! 不像硬碟遇到不連續資料時要移動磁頭 有Random Access Time的問題

BTW,如果真的用在Loading很高的伺服器上 15K還是比10K好太多了...很多時候都覺得WD很怪 真要拼應該還是得出15K等級的硬碟來打企業市場才是

所以我才覺得WD出了一堆號稱"企業級"的硬碟來吊吊消費者胃口

真的企業級環境裡 伸腳一踢不是踢到HITACHI就是SEAGATE......WD那是啥?能吃嗎?

迅猛龍算是PC理硬碟佼佼者~畢竟沒有廠商願意出萬轉SATA硬碟時 WD敢做出來賣 (當然我也買了一顆XD)

不過說實在的.....企業級的設備上一堆10K 15K等的SAS(3Gbps/6Gbps) 跟 FiberChannel(4Gbps)硬碟 以迅猛龍這種10K SATA II的硬碟想要玩企業級的市場我是覺得很難

wd應該是要吃下高階pc這一塊
畢竟沒有其他廠有同質的產品.....
況且，事實也証明wd做的很成功 :rolleyes:
跟其他產品區隔又兼獨佔(單指萬轉pc市場而言)

有沒有可能要跟SSD拼速度 所以單碟200G捨棄掉較慢的內圈50G
藉此提高傳輸速度 不然SSD速度這麼快 很容易被巴假的(少輸為贏!?)

真的拿SSD跟高轉速硬碟(例如說這篇在討論的迅猛龍)的操作經驗來比較
其實到最後會發現其實SSD跟高轉速硬碟應該是不同市場的東西

SSD讀取普通大小的檔案無敵快 但是寫入跟讀取小Block爆慢->所以SSD適合當系統/常用應用程式碟 但是不適合把暫存檔放上面
高轉速硬碟正好相反 拿來放暫存檔超好用 但是拿來當系統/常用應用程式碟會被SSD痛宰

所以最後個人的配置是->系統放SSD上 暫存檔去撿二手的中暴龍
個人抓的音樂跟漫畫放7200轉的梭魚上 牧場就拜託LP了...

我一開始也這樣猜...真的這樣也許可以快了20% seek time
效能跟ssd打還是完全無勝算，但是在容量的絕對優勢上又少了一點
不過話又說回來，買這種東西都當系統碟，150gb照理很夠了
假如真的這樣做我還是樂意接受的
我一直想說假如一台7200rpm的3.5吋HDD只用外面1/3圈
容量雖然只剩下1/2左右，但是速度也可以提升很多嗎？

剛剛找到國外測試
感覺很變態
http://www.harddrivebenchmark.net/h...=WDC+WD6000BLHX
雖然家裡的暴龍和迅猛龍一直用不壞
但是還是會入手
雖然一直想買X25
但還是算了
怕死

:eek: :eek: :eek: :eek:

937 Vs 1214 :confused:

http://wdc.custhelp.com/cgi-bin/wdc...8252864&p_olh=0

WD VelociRaptor drives offer maximum speed, low power consumption, and cool operation perfect for blade servers, performance enthusiast systems, workstations,and low-end servers. Available in a 2.5-inch form factor for use in enterprise applications or designed into a 3.5-inch mounting frame for installation in high-performance 3.5-inch enabled systems and chassis.

Product Benefits

Killer Speed – Built on the performance bloodlines of WD Raptor®, these 10,000 RPM drives, with a SATA 6 Gb/s interface and 32 MB cache, deliver mind-bending performance.

Not only are they up to 15% percent faster than the previous generation
WD VelociRaptor drives, but they also beat out all other competitors in the field.

Rock-solid Reliability – Designed and manufactured to mission-critical
enterprise-class standards to provide enterprise reliability in high duty cycle environments.

With 1.4 million hours MTBF, these drives have the highest available reliability rating on a high capacity SATA drive.

Double the Capacity – State-of-the-art technology packs twice the capacity per drive compared to the previous generation of WD VelociRaptor, resulting in up to 600 GB of high-performance storage space in this enterprise-class 2.5-inch drive. (Not compatible with notebook computers)

Small form factor – This ultra fast 2.5-inch hard drive is engineered to fit into blade servers and other enterprise storage configurations. (Not designed for use in laptop or notebook computers)

􀂄 Ultra-cool operation – Consumes less idle power and uses similar active power as the previous generation WD VelociRaptor, while offering double the capacity and higher performance.

IcePack™ mounting frame - The 2.5-inch WD VelociRaptor is enclosed in a back planeready 3.5-inch enterprise-class mounting frame with a built-in heat sink that keeps this powerful little drive extra cool when installed in high-performance desktop chassis.
(WDxxxxHLHX models only)

NoTouch™ ramp load technology – The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Pre-emptive Wear Leveling (PWL) – Designed to ensure reliability for applications that perform a high number of incoming commands.

Rotary Acceleration Feed Forward (RAFF™) – Optimizes operation and performance when the drives are used in vibration-prone, multi-drive chassis.

Environmentally Conscious – In addition to being RoHS compliant, this generation of WD VelociRaptor also provides a “Halogen Free” design.