Alex Mitsio Sato wrote:
>Do you know another device called "PD"? Is like "MO", an
>opticalmagnetic disc based device.
>In my humble opinion, a PD driver is better than MO because
>when you buy that you get a fast CD-ROM drive too, but you
>can put only a PD or only a CD in that drive in the same
>time.
I've never heard of PD drives before. How does it work, could you tell me
more about it?
>I perceived which in fast CDROMs, greater than 12x, the
>transfer rate is high but the acess time is very high too (a
>few seconds). But in my PD drive, the transfer rate is high
>and the acess time is very low, you can get the short files
>quickly using PD drive when you need to wait some SECONDs to
>get short files in normal fast CDROM drive.
>the transfer rate of PD (the drive which I have
>here) is 518 Kb/s~1141 Kb/s in PD mode and 1500
>Kb/s~3000Kb/s in CDROM mode.
A FEW SECONDS access time? What kind of CD-ROM is that?!
Specs on my 32-speed Ultra SCSI CD-ROM:
Data Transfer Rate: 2084 ~ 4828 kB/s (20 MB/s in synchronous burst mode)
Random Access time: 85 ms
Random Seek time: 80 ms
Specs on my 12-speed SCSI CD-R:
Data Transfer Rate: 1200 ~ 1800 kB/s (10 MB/s in sync burst)
Random Access time: 190 ms
Greetz,
Patriek
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