人人有本用

升级笔记本硬盘，换什么牌子的好？ibm还是东芝？

我推荐换IBM。

我用东芝的机器后来又换了IBM的硬盘
虽然我很喜欢TOSHIBA
但是本本硬盘还是选择了IBM的
声音小

ibm的好，我用的就是ibm

最初由 11 发布 IBM的20GN DJSA-220000 20GB，单碟容量10GB，DMA66，2M Cache，4200转，9.5ms，广州卖1000元，保修1年

好象没有2M CACHE吧？

我也是TOSHIBA本本加IBM硬盘…………

Model DJSA-220/210/205
Configuration  
Interface ATA/66
Capacity ¹(GB) 20.0/10.0/5.0
Sector size (bytes) 512
Recording zones 16
User cylinders  22,784
Data heads  4/2/1
Disks 2/1/1
Max. areal density (Gbits/sq. inch) 17.1  
Max. recording density (KBPI) 451.1
Track density (KTPI) 38  
Drive Fitness Test Enabled
Performance
Data buffer (KB) 2048²/512³512³
Rotational speed (RPM) 4200
Latency (average ms) 7.1
Media transfer rate
(Mbits/sec) 108.8 to 202.9
Interface transfer rate (MB/sec) 66.6 Ultra-DMA mode 4
16.6 PIO mode 4
Seek time (ms)
   Average (typical) 12.0
   Single track (typical) 2.5
   Full stroke (typical) 23.0
Reliability
Error rate (nonrecoverable) < 1 per 1.0E13 bits transferred
  Load/unload
  cycles 300,000
Power
Voltage
Requirement (VDC) +5(+/-5%)
Dissipation (W)
   Startup
   (max peak) 4.7
   Seek (typical) 2.3
   Read (typical) 2.0
   Write (typical) 2.1
   Performance idle (typical) 1.85
   Active idle (typical) 0.85
   Low power idle (typical) 0.65
   Standby (typical) 0.25
   Sleep (typical) 0.1
  Power consumption efficiency (watts/MB) 0.00003/0.00007/0.00013
Physical size
Height (mm) 9.5
Width (mm,nominal) 70.0
Depth (mm,nominal) 100.0
Weight (g) 99.0
Environmental characteristics
  Operating Nonoperating
Ambient temperature 5 to 55° C -40 to 65° C
Relative humidity (noncondensing) 8% to 90% 5% to 95%
Maximum wet bulb (noncondensing) 29.4° C 40° C
Shock (half sine wave) 150 G/2 ms 800 G/1 ms  
Vibration  
Random (RMS) 0.67 G(5-500 Hz) 3.01 G (2.5-500 Hz)
Swept sine (RMS) 1 G 0-peak (5-500 Hz) 5 G 0-peak (10-500 Hz)
Warranty  
Three years*  


应该是2m cache..这个周末我也去换一个。