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旧 Nov 3rd, 2006, 21:31     #1
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作者: 杜撰
请问内置硬盘与外置硬盘各自的优缺点。
外置硬盘分几种,各有啥特点?
内置硬盘现在进化到了什么地步?
现在窜口硬盘(SATA) 在有主要的市场。
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旧 Nov 3rd, 2006, 23:29     #2
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我们常说的IDE硬盘,也就是"PATA"硬盘(并口硬盘)。目前主流的并行(PATA/IDE)硬盘仅能支持ATA-100和ATA-133两种数据传输规范,传输速率最高能达到100Mbit/s或133Mbit/s峰值带宽。
SATA 标准的出现主要是针对传统并行ATA(PATA)技术的不足。PATA技术已经使用了很长时间,但是随着PC技术的发展,它已经不能在现有体系架构下提供足够的传输带宽。和SATA相比,它们技术的差别在于对传输数据的方式。PATA标准中,数据以并行的方式进行传输,并且在接收端进行重新组装。
在过去的几年中,串行通讯方式的可靠性和灵活性已经逐渐超越了并行总线。而且串行通讯技术可以方便的实现高速数据传输;在传输过程中可以避免噪声和时钟同步的影响。并且PATA的总线长度有物理的限制,数据线不能过长,否则传输的数据就有可能出错。

而SATA技术却克服了传统PATA中这两个不足,以下是SATA的几点优势:

· 数据线最长1m ,但是这长度已经足够连接外部的设备。
· 磁盘针脚,电源接口针脚数量减少,有利于空气流通散热。
· 点对点连接,没有主从盘概念,并且可以对SATA设备方便的关闭。
· 只需很低的供电电压。
· 扩展性强(SATA 可以达到150Mbit/s的峰值带宽, SATA 2可以达到3.0Gb/s的峰值带宽)。
· 支持即插即拔。
· 轻协议负载,提高了传输效率
· 确保数据完整性(传统的PATA不会对接收数据进行校验和纠错)。
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旧 Nov 3rd, 2006, 23:31     #3
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作者: gzkl
可能快50-100%. 容量越大越快, 越近零磁道的数据越快. 装在第一分区的系统最快.
太夸张了吧,你不会是以前用5400转的硬盘吧!
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旧 Nov 3rd, 2006, 23:57     #4
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作者: 杜撰
如果是外置的,5,3.5,2.5寸的,USB, 1394和SATA,各有啥优缺点?
USB : 缺点传输速度相对与1394 & SATA 慢,优点是USB接口普及。方便USB设备使用。
1394:缺点台式机主板都不配备。需要另外购置。优点是传输速度快,性能稳定。
SATA: 缺点是目前SATA硬盘盒价格比较贵,如果不接SATA接口,速度方面受到USB/1394的限制.直接接SATA口,需要SATA外接卡.这东西更是少见.
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旧 Nov 4th, 2006, 00:23     #5
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作者: dalpaul
清推荐个速度测试软件吧。我的7200WD80读的小程序都得10秒。费解。
ATTO Disk Benchmarks 3.2


我的SATA硬盘 (Seagate Barracuda 7200.10 SATA NCQ 3.0Gb/s 320GB 16MB Cache (OEM) ) 测试如下:
读/写峰值: 55MB/s , 100MB/s.

我没有感觉SATA比IDE快很多. 测试一下你的硬盘, 看能有多少?
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旧 Nov 4th, 2006, 08:41     #6
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作者: dalpaul
WD800JB:ATAPI/7200RPM/8M cache/DMA5:当总长度4M时写 85MB/S,读 30MB/S。如果总长度是32MB的话。读写都接近40MB/S。读得速度在传输尺寸为10K左右达到最高且稳定在30MB/S左右。而写的速度从32K起超过读的速度并保持在85MB/S 的水平上。...
你的机器慢问题不一定在硬盘上, 主板 & 内存都有关. 综合性能不行.
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旧 Nov 4th, 2006, 09:04     #7
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引用:
作者: 杜撰
最近不读书,不看报,落伍咧。
这会儿没说移动,待会儿可不一定不移动啊!
少去 枫叶丽人 那里和老太太灌水! 以人家 gzkl 兄弟为学习榜样.


引用:
作者: 杜撰
你的意思是SATA的外置硬盘可以装在非SATA的外置硬盘盒内,采用USB或1394形式的接口?
是的, 有些硬盘盒里面接硬盘用的是SATA & SATA2接口, 外面连电脑的接口是 USB 2.0 / 1394.
带USB 2.0 & 1394 & SATA多种接口的硬盘盒价格较贵. 而且麻烦! 电源线 + 数据线 就有 5 根之多.
现在国人发明了一个SATA 3.0 接口. 一根电缆 = 数据 + 电源. 可以热拔插. 是普通USB 2.0速度的4-5倍, 并且可集成操作系统像本地硬盘一样高速启动(传统USB硬盘不方便集成XP系统启动). 相信不久SATA 3.0 接口将成为主流.

此帖于 Nov 4th, 2006 10:09 被 Beyond  编辑。
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旧 Nov 4th, 2006, 09:31     #8
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引用:
作者: gzkl
基于hackintosh系统的测试:
1,250G sata
2. 60G pata(7200)
3. 4.3G(5400)
4. 300G(basically same speed as 250G) pata via USB

Windows 的你自己测吧
哈哈! 你果然用5400转. 你这种测试不具备公平性. 250G SATA VS 300GB PATA 比较有说服力.
你的USB口感觉不正常, 根据你那个测试表显示, 速度低的离谱.
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旧 Nov 4th, 2006, 09:44     #9
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我USB 2.0的PATA移动硬盘 (MAXTOR 6Y120LO 120G / 7200RPM ATA-133 / 2MB Cache ) 测试如下:
读/写峰值: 26MBit/s , 32MBit/s.

没有接IDE测试过.
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旧 Nov 4th, 2006, 11:04     #10
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引用:
作者: dalpaul
内存PC 5300 2G;
AMD 4200+双核;
这两样不太好挑毛病。
主板能差很多吗?
配置比我的高多了, 硬盘和你其它的设备太不匹配了. 硬盘是ATA100 / ATA133?
我的AMD Athlon 64 3500+ , 512 MB PC2100 DDR, 320GB SATA 2 (现在降到SATA用). 内存等DDR PC3200 价格合适的时候换掉. 我配置 2 * 512MB 就行了. 多了浪费.
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旧 Nov 4th, 2006, 12:14     #11
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看看这个. 我刚测的.
上传的缩略图
点击图片以查看大图

名称:	disk_tst.JPG
查看次数:	65
文件大小:	58.9 KB
ID:	11368  
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旧 Nov 4th, 2006, 15:49     #12
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引用:
作者: 杜撰
外置硬盘是不是很占地方?
可是内置硬盘不方便,不能带着走。

我看有一种很小的外置硬盘,2.5寸的吧,带两个USB接头,需要同时插上才能用,是不是只接一个电压不够?这种咋样?怀疑速度可能很慢,虽然看上去很方便得说。
硬盘是耗电大户, 电压不够, 插在电脑背后的USB口应该可以.
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旧 Nov 4th, 2006, 16:59     #13
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引用:
作者: 杜撰
外置硬盘是不是很占地方?
可是内置硬盘不方便,不能带着走。

我看有一种很小的外置硬盘,2.5寸的吧,带两个USB接头,需要同时插上才能用,是不是只接一个电压不够?这种咋样?怀疑速度可能很慢,虽然看上去很方便得说。
还有种方法: 买一USB电源适配器(很多MP3播放器都带有这个附件),使用的时候先把两个USB接头中的一个接头插在USB电源适配器上,然后再接电脑。非常有效!
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旧 Nov 5th, 2006, 20:26     #14
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引用:
作者: ChinaSmileJoe
看看我的office电脑成绩, 赛扬2.66G
不错呀! 请问什么硬盘?
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旧 Nov 5th, 2006, 21:19     #15
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引用:
作者: gzkl
不认同这说法,个人认为相反。
SATA的价格比PATA贵多少?基本可以忽略。根据:http://ucomputer.ca/html/harddrive.php
反正我自从用过SATA后,打死也会不再PATA了,除非在不能用SATA场合。
严重同意! PATA下课了.
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旧 Nov 6th, 2006, 18:38     #16
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作者: ChinaSmileJoe
很普通的,WD Caviar SE 40 GB EIDE Hard Drives ( WD400JB ) ,电脑是赛扬 2.66G,集成显卡,声卡,网卡那种,内存512M。
不太理解? 比我的那块硬盘还快.
哈哈! dalpaul 看到这一贴, 狠不得把硬盘给砸了!!!
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旧 Nov 6th, 2006, 19:05     #17
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作者: magic_tang
如果是在10年前,你这样说我坚决同意。不过现在已经过了追求HIEND级系统的年龄了,电脑这东西,变化实在快,要跟着厂商去升级,永远都追不上。只从硬盘上说,确实SATA和PATA的价格相差无几,但是问题是老的主板是否匹配。如果没有SATA接口,就必须单独购买SATA接口的PCI卡。另外,连接线也是一个...
你这话说的有些强词夺理,前面说SATA 比 PATA贵,如果SATA 比 PATA贵过$5, 我都不会考虑。现在又说电脑升级。前面gzkl都说了,“除非在不能用SATA场合。...”他的意思当然是说主板支持的前提下。不知道你是没有看到,还是在自圆其说?

引用:
作者: magic_tang
所以,如果你现在要买块硬盘,仍然可以考虑并口硬盘,经济又实惠,即使100的外部传输率对于66的内部速率来说也足够了,尤其在于主板没有SATA接口的时候,完全没有必要再去买一块SATA的接口卡,就把这钱扔在容量上好了。如果主板有SATA接口,可以考虑买块SATA的,便于日后系统升级了以后仍然可以用。(不过还是不倾向于这么做,现在的硬件架构变化太快,现在买的东西说不定两年以后就没有人支持了)。

无论怎么样,我都建议购买内置硬盘加移动硬盘盒的解决方案。内置3.5存7200转200G以上的硬盘是最佳选择。外置硬盘盒接口也不用追求SATA或者是FIRE,尤其是FIREwire,最不实用的东西。USB2.0是最佳选择,通用性高,很多地方都不用安装驱动就直接支持。别告诉我480M的传输速率不够你用。USB1.1的一定不能买,传部电影就会让你郁闷死。内置2.5寸加外置硬盘盒虽然也是一个不错的方案,但是2.5寸的硬盘价格过高,而且互换性不如3.5寸的台式机硬盘(你可以把大容量的新硬盘装在计算机里,把那个老的80G的硬盘拿出来做备份盘,如果是2.5寸笔记本硬盘显然就无法这么做)。3.5外置硬盘盒TIGERDIRECT有很多,有些华人店里也有价格很便宜的。购买时需注意几点:1、最好买铝合金外壳的,有利于散热。200G以上的7200转硬盘全速运转时的热量是非常高的,说不定能熔掉廉价的塑料外壳。有些高质高价的硬盘盒带内置风扇,但是同时会带来噪音问题,如何取舍看你自己了。2、千万别买成USB1.1的,如果在奸商那里买廉价货一定要留条后路,万一测试下来不是USB2.0的要允许退货。3、3.5寸的台式机硬盘是耗电大户,所以一个外置电源是必须的。高质高价的硬盘盒其价格就高在这三个地方,散热好(有的带风扇),高质量的USB2.0接口芯片,高质量的供电电路,所以它们能提供稳定高速的连接。


FUTURESHOP等提供的移动式硬盘是不错的东西,静音低热,又不用再外接电源,但是价格实在太高了,相同的价格自己组装的话容量可以高一倍,使用上就只有一点点的不方便而已,如果你只是用来做备份盘,那么就连这一点点不方便也没有了。
这部分写的不错,很清晰有条理。对于像LZ在观望的人很有帮助。
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旧 Nov 6th, 2006, 19:07     #18
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作者: dalpaul
同感。
等硬盘打折扣的时候换吧!
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旧 Nov 6th, 2006, 21:22     #19
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作者: gzkl
还有的是系统不支持。我曾试过在RED HAT9装SATA时就发现不了硬盘,估计那年头SATA还不流行,不支持。还有几个LINUX版本是在SATA装不了的,如以低配置见称的SLACKWARE等。实际上硬盘磁头的读取应该是串行的,而PATA是在硬盘转成并行的。SATA的数据带宽很宽,因此实际所需的传输时...
WinXP 也不支持SATA, 安装时需要插入带 SATA 驱动的软盘. 你用的什么版本的XP? Ghost版?
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旧 Nov 6th, 2006, 21:48     #20
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作者: 大闸蟹
以前觉的您是高手, 这一句话真是败笔. 失望.
sata is not problem for win xp even for dos. The floppy you're talking about is for raid. lots of sata interfaces on the mothe...
哈哈! 我可不是什么高手, gzkl 才算.
问一声, 兄弟, 你在SATA上装过WinXP吗?
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