SATA vs. IDE

  • Thread starter Thread starter Kent McPherson
  • Start date Start date
K

Kent McPherson

Are the current SATA drives really faster than IDE drives today? I do a lot
of video editing and was considering adding a SATA drive for my video.
 
SATA Advantages

Improved command set for better data integrity
Performance increase from 133 to 150MB/s maximum external (burst) data transfer rate
Buffer cache increase from 0 or 2Mb to 8M
Seek time reduce from <10.0ms to <9m
Thin cables for easy routing and improved cooling inside a PC chassis or JBOD box
Maximum cable length increases to 1 metre for increased design and layout flexibility in a system
Connectors designed for blind mate and hot plug
Reduced pin count enables RAID scalability

They do use a little more power, generate more noise and heat but not in any significant measure
Backward compatible with existing parallel ATA software and drivers
 
On Tue, 13 Apr 2004 05:06:03 -0700, BAR
SATA Advantages:

Some of these are NOT inherent in S-ATA itself.
Improved command set for better data integrity

Reference? I'm not disputing that, but I'd like more detail!
Performance increase from 133 to 150MB/s maximum external (burst) data transfer rate

Note that the gain may be curbed by PCI limitations, unless your S-ATA
controller connects to the system "above" the PCI.
Buffer cache increase from 0 or 2Mb to 8Mb

That's not an S-ATA thing; you can get 8M cache on alternate models of
pre-S-ATA hard drives also.
Seek time reduce from <10.0ms to <9ms

Also sounds more like a per-model thing. I suspect the same hi-end
drive chassis are used for boht pre-S-ATA and S-ATA models.
Thin cables for easy routing and improved cooling inside a PC chassis or JBOD box
Maximum cable length increases to 1 metre for increased design and layout flexibility in a system
Connectors designed for blind mate and hot plug

Caveat: Must use true S-ATA power connectors for this to be safe.
Many S-ATA HDs have both legacy and S-ATA power connectors; never use
both at the same time, and don't hot-swap if using the legacy one.
Reduced pin count enables RAID scalability


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Kent said:
Are the current SATA drives really faster than IDE drives today? I do a lot
of video editing and was considering adding a SATA drive for my video.

Yes - but it has nothing to do with the SATA/PATA bus. There are
some SATA HDs which spin at 10K RPM, while the fastest PATA HDs
are 7200 RPM. And higher RPM means shorter access times.

TANSTAAFL: 10K RPM HDs do cost more than 7200 RPM HDs.
 
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